CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                        PHILIPP BROTHERS CHEMICALS, INC.

               (Under Section 805 of the Business Corporation Law)

            The undersigned, being respectively the President and Secretary of
the below-named corporation, hereby certify as follows:

            FIRST: The name of the Corporation is Philipp Brothers Chemicals,
Inc. (the "Corporation").

            SECOND: The original certificate of incorporation of the Corporation
was filed by the Department of State on May 11, 1946 (such certificate of
incorporation, as amended and in effect thereafter, the "Certificate of
Incorporation").

            THIRD: The Certificate of Incorporation is hereby amended to provide
that 25,000 shares of the Corporation's authorized and unissued Preferred Shares
(as defined in the Certificate of Incorporation) shall be designated as Series B
Redeemable Participating Preferred Shares (hereinafter referred to as the
"Series B Preferred Shares"), which shall have the following relative rights,
preferences and limitations, as fixed by the Corporation's Board of Directors
pursuant to authority granted to it under the Certificate of Incorporation and
as permitted by Section 502 of the Business Corporation Law:

                        1. Rank. (a) For purposes of this Certificate of
            Amendment, the following capitalized terms shall have the following
            meanings.

                        (i) "Senior Securities" shall mean, with respect to a
            class or series of Preferred Stock, all equity securities issued by
            the Corporation the terms of which specifically provide that such
            equity securities rank senior in preference or priority to such
            class or series of Preferred Stock with respect to dividend rights
            or rights upon liquidation, dissolution or winding up of the affairs
            of the Corporation.

                        (ii) "Parity Securities" shall mean, with respect to a
            class or series of Preferred Stock, all equity securities issued by
            the Corporation the terms of which specifically provide that such
            equity securities rank on a parity, without preference or priority,
            with such class or series of Preferred Stock with respect to
            dividend rights or rights upon liquidation, dissolution or winding
            up of the affairs of the Corporation, whether or not the dividend
            rates, dividend payment dates or redemption or liquidation prices
            per share or sinking fund provision, if any, of such equity
            securities be different from those of such class or series of
            Preferred Stock.


                                                                               2


                        (iii) "Junior Securities" shall mean, with respect to a
            class or series of Preferred Stock, all equity securities issued by
            the Corporation ranking junior in preference or priority to such
            class or series of Preferred Stock with respect to dividend rights
            or rights upon liquidation, dissolution or winding up of the affairs
            of the Corporation, including but not limited to all Common Shares
            (as defined in the Certificate of Incorporation) of the Corporation.

                        (b) The Series B Preferred Shares shall rank senior to
            all Junior Securities, on a parity with all Parity Securities, and
            junior to all Senior Securities, in each case with respect to
            dividend rights or rights upon liquidation, dissolution or winding
            up of the affairs of the Corporation; provided that (i) the Series B
            Preferred Shares shall rank senior to the Series A Preferred Shares
            (as defined in the Certificate of Incorporation) with respect to
            dividend rights and on a parity with the Series A Preferred Shares
            with respect to rights upon liquidation, dissolution or winding up
            of the Corporation and (ii) the Series B Preferred Shares shall rank
            on a parity with the Series C Preferred Shares with respect to
            dividend rights and rights upon liquidation, dissolution or winding
            up of the Corporation.

                        2. Dividends. (a) The holders of issued and outstanding
            Series B Preferred Shares shall be entitled to receive, when, as and
            if declared by the Board of Directors, cash dividends at an annual
            rate equal to 15% of the Series B Liquidation Preference (as defined
            below) (the "Series B Base Dividend"). In addition, the holders of
            issued and outstanding Series B Preferred Shares shall be entitled
            to participate with the Class A Common Shares (as defined in the
            Certificate of Incorporation) and to receive, before any dividends
            (whether in cash or in kind) are paid upon or set aside for the
            Class A Common Shares, the same dividends (whether in cash or in
            kind), as are distributed in respect of each Class A Common Share
            (the "Series B Participating Dividend"). One Series B Preferred
            Share shall be treated for purposes of such participation as being
            equal to 0.5 (the "Series B Participation Number") shares of Class A
            Common Shares. Holders of Series B Preferred Shares shall not be
            entitled to any dividend, whether payable in cash or in kind, in
            excess of full cumulative Series B Base Dividends and Series B
            Participating Dividends, as specifically provided in this Article
            THIRD. Series B Participation Dividends shall be paid at the same
            time as and when dividends on the Class A Common Shares are paid to
            holders of Class A Common Shares.

                        (b) Series B Base Dividends shall accrue on a daily
            basis, cumulative from the date of issuance, and shall be payable
            semi-annually in arrears on the last day of each June and December,
            or, if such date is not a business day, the succeeding business day
            (each, a "Series B Base Dividend Payment Date"). Series B Base
            Dividends shall be computed on the basis of a 360-day year
            consisting of twelve 30-day months. Series B Base Dividends shall
            accrue and cumulate whether or not the Corporation has earnings or
            profits, whether or not there are funds legally available for the
            payment of dividends and whether or not dividends are declared.
            Series B Base Dividends shall be paid to the holders of record of
            Series B Preferred Shares as they appear on the records of the
            Corporation at the close of business on the 15th day of the calendar
            month in which the applicable Series B Base Dividend Payment Date
            falls or on such other date designated


                                                                               3


            by the Board of Directors for the payment of Series B Base Dividends
            that is not more than 30 nor less than 10 days prior to such Series
            B Dividend Payment Date. Any payment of a Series B Base Dividend
            shall first be credited against the earliest accumulated but unpaid
            Series B Base Dividend due with respect to such share that remains
            payable.

                        (c) So long as any Series B Preferred Share is
            outstanding, no dividend (other than a dividend in Common Shares of
            the Corporation) shall be declared or paid or set aside for payment
            or other distribution declared or made upon any Junior Securities of
            any kind, nor shall any Junior Securities of any kind be redeemed,
            purchased or otherwise acquired for any consideration (or any moneys
            be paid to or made available for a sinking fund for the redemption
            of any shares of any such securities) by the Corporation (except by
            conversion into or exchange for other Junior Securities), unless, in
            each case, full cumulative dividends on all the Series B Preferred
            Shares have been or are contemporaneously declared and paid or are
            declared and a sum sufficient for the payment thereof is set apart
            for such payment for all past dividend periods and the then current
            dividend period. If dividends are not paid in full or a sum
            sufficient for such full payment is not so set apart upon the Series
            B Preferred Shares, all dividends declared upon the Series B
            Preferred Shares and any series of Parity Securities with respect to
            dividends shall be declared pro rata so that the amount of dividends
            declared per share of the Series B Preferred Shares and such series
            of Parity Securities with respect to dividends shall in all cases
            bear to each other the same ratio that accrued and unpaid dividends
            per share on the Series B Preferred Shares and such series of Parity
            Securities with respect to dividends bear to each other.
            Notwithstanding anything to the contrary in this Section 2(c),
            Common Stock of the Corporation may be repurchased by the
            Corporation as required by the Shareholders Agreement dated December
            29, 1987, by and between the Corporation, Charles H. Bendheim, Jack
            C. Bendheim and Marvin S. Sussman (the "Sussman Shareholders
            Agreement"), as amended and in effect on the date of original
            issuance of the Series B Preferred Shares, and as thereafter
            amended, except for any amendment subsequent to the date of original
            issuance of the Series B Preferred Shares which causes the terms of
            such agreement to be less favorable in any respect to the
            Corporation or the holders of the Series B Preferred Shares.

                        (d) If the Corporation subdivides or splits the
            outstanding Class A Common Shares into a greater number of shares or
            combines the outstanding Class A Common Shares into a smaller number
            of shares, then the Series B Participation Number shall be adjusted,
            effective immediately after the relevant effective date, so as to
            represent the number of Class A Common Shares of the Corporation
            which would be represented by the then applicable Series B
            Participation Number upon the effective date of the subdivision,
            split or combination. As soon as practicable, the Corporation shall
            deliver by first class mail, postage prepaid, to each holder of
            Series B Preferred Shares a notice, certified as true and correct by
            an authorized person of the Corporation, stating the Series B
            Participation Number after such adjustment, a brief statement of the
            facts requiring such adjustment and the effective date of such
            adjusted Series B Participation


                                                                               4


            Number; provided that the failure of the Corporation to give such
            notice shall not invalidate any corporate action by the Corporation.

                        3. Redemption.

                        (a) Optional Redemption. (i) During the period beginning
            90 days before and ending 90 days after each anniversary of the date
            of original issuance of the Series B Preferred Shares (the "Series B
            Anniversary Period"), but only once per Series B Anniversary Period,
            the Corporation may redeem all or part of the issued and outstanding
            Series B Preferred Shares by payment in cash for each share of
            Series B Preferred Share redeemed in an amount equal to the Series B
            Liquidation Preference; provided, however, that if all Series C
            Preferred Shares are not redeemed concurrently with the Series B
            Preferred Shares during a Series B Anniversary Period, then, in lieu
            of the foregoing, the amount to be paid in cash by the Corporation
            in this Section 3(a)(i) in respect of Series B Preferred Shares to
            be redeemed shall be an amount equal to (A) the Series B Liquidation
            Preference, plus (B) an amount so that, combined with all other
            payments made on the Series B Preferred Shares to be redeemed, a
            holder of Series B Preferred Shares will have received an internal
            rate of return of 20% on the purchase price of the Series B
            Preferred Shares from the date of issuance to the date fixed for
            redemption. Notwithstanding anything to the contrary, the Series B
            Preferred Shares may be redeemed in part during a Series B
            Anniversary Period only if the number of shares of Series B
            Preferred Shares to be redeemed during such Series B Anniversary
            Period is equal to or greater than 50% of the number of shares of
            Series B Preferred Shares issued and outstanding on the first day of
            the first Series B Anniversary Period, as adjusted for stock
            dividends, subdivisions, splits, combinations or similar
            transactions thereof.

                        (ii) During each period that is not a Series B
            Anniversary Period (a "Non-Series B Anniversary Period"), but only
            once per Non-Series B Anniversary Period, the Corporation may redeem
            all or part of the issued and outstanding Series B Preferred Shares
            by payment in cash for each share of Series B Preferred Share
            redeemed in an amount equal to (A) the Series B Liquidation
            Preference, plus (B) an amount equal to the dividends that would
            have accrued after such redemption if such Series B Preferred Share
            was redeemed on the anniversary of the date of original issuance of
            the Series B Preferred Shares occurring in the Series B Anniversary
            Period immediately following such Non-Series B Anniversary Period;
            provided, however, that if all Series C Preferred Shares are not
            redeemed concurrently with the Series B Preferred Shares during a
            Non-Series B Anniversary Period, then, in lieu of the foregoing, the
            amount to be paid in cash by the Corporation in this Section
            3(a)(ii) in respect of Series B Preferred Shares to be redeemed
            shall be an amount equal to (A) the Series B Liquidation Preference,
            plus (B) an amount equal to the dividends that would have accrued
            after such redemption if such Series B Preferred Share was redeemed
            on the anniversary of the date of original issuance of the Series B
            Preferred Shares occurring in the Series B Anniversary Period
            immediately following such Non-Series B Anniversary Period, plus (C)
            an amount so that, combined with all other payments made on the
            Series B Preferred Shares to be redeemed, a holder of Series B
            Preferred Shares will have received an internal rate of return of
            20% on the purchase price of the Series B Preferred Shares from the
            date of


                                                                               5


            issuance to the anniversary of the date of original issuance of the
            Series B Preferred Shares occurring in the Series B Anniversary
            Period immediately following such Non-Series B Anniversary Period.
            Notwithstanding anything to the contrary, the Series B Preferred
            Shares may be redeemed in part during a Non-Series B Anniversary
            Period only if the number of shares of Series B Preferred Shares to
            be redeemed during such Non-Series B Anniversary Period is equal to
            or greater than 50% of the number of shares of Series B Preferred
            Shares issued and outstanding on the first day of the first Series B
            Anniversary Period, as adjusted for stock dividends, subdivisions,
            splits, combinations or similar transactions thereof.

                        (iii) The Board of Directors shall fix a record date for
            the determination of the Series B Preferred Shares to be redeemed,
            and such record date shall not be more than 30 days nor less than 10
            days prior to the date of redemption. The Corporation shall deliver
            by first class mail, postage prepaid, a notice of redemption not
            less than 10 nor more than 30 days prior to the date of redemption,
            addressed to the holders of record of the Series B Preferred Shares
            as they appear in the records of the Corporation. No failure to give
            such notice or any defect therein or in the mailing thereof shall
            affect the validity of the proceedings for the redemption of any
            Series B Preferred Shares except as to the holder to whom notice was
            defective or not given. Each notice shall state the following: (A)
            the record date and date of redemption; (B) the redemption price;
            (C) the number of shares of Series B Preferred Stock to be redeemed;
            (D) the place where the Series B Preferred Shares are to be
            surrendered for payment of the redemption price; and (E) that
            dividends on the shares to be redeemed will cease to accrue on such
            redemption date. If less than all of the Series B Preferred Shares
            held by any holder is to be redeemed, the notice mailed to such
            holder shall also specify the number of shares of Series B Preferred
            Shares held by such holder to be redeemed.

                        (b) Mandatory Redemption. (i) On and at any time after
            the Mandatory Redemption Right Date (as defined below), the Series B
            Preferred Shares shall be subject to mandatory redemption by the
            Corporation at the option and election of the holder thereof at a
            price, payable in cash, for each share of Series B Preferred Share
            redeemed in an amount equal to the Series B Liquidation Preference.
            All shares of Series B Preferred Shares held by such holder electing
            for redemption under this clause (b) shall be redeemed. The
            "Mandatory Redemption Right Date" means the earlier to occur of (x)
            the stated maturity or the earlier redemption in full of the
            Corporation's Series A and Series B 9 7/8% Senior Subordinated Notes
            due 2008 (the "Notes") or (y) a Change of Control (as defined in
            Article FIFTH hereto, which definition is the same as that contained
            in the Indenture, dated as of June 11, 1998, among Philipp Brothers
            Chemicals, Inc., Chase Manhattan Bank, as Trustee, and the
            guarantors named therein with respect to the Notes (the
            "Indenture")).

                        (ii) The Corporation shall give notice to the holders of
            record of Series B Preferred Shares of this mandatory redemption
            right as soon as practicable after the Mandatory Redemption Right
            Date, by first class mail, postage prepaid, at their addresses as
            shown on the records of the Corporation. Each such notice shall
            state: (A) that, on and after such Mandatory Redemption Right Date,
            such holder has the right to require the


                                                                               6


            Corporation to repurchase for cash all of such holder's Series B
            Preferred Shares; (B) the redemption price as of the Mandatory
            Redemption Right Date (it being understood that the actual
            redemption price will be determined as of the date on which the
            redemption occurs); (C) the place where the Series B Preferred
            Shares are to be surrendered for payment of the redemption price;
            and (D) that dividends on the shares to be redeemed will cease to
            accrue as of the date such shares are redeemed.

                        (iii) The Corporation shall redeem each Series B
            Preferred Share requested to be redeemed by the holder thereof
            within 30 days of receipt by the Corporation of a notice from such
            holder requesting such redemption. If the Corporation fails for any
            reason to so redeem any one or more of the Series B Preferred Shares
            so requested to be redeemed, then, immediately upon the expiration
            of such 30-day period and for so long as the Corporation has not
            redeemed all of such Series B Preferred Shares requested to be
            redeemed, each Series B Preferred Share shall entitle the holder
            thereof to the same voting rights to which each Class A Common Share
            of the Corporation (and each share of any other capital stock of the
            Corporation) entitles the holder thereof; provided, however, no
            Series B Preferred Share shall entitle the holder thereof to any
            voting rights with respect to the election and removal of directors.
            The holders of Series B Preferred Shares shall vote together with
            the Class A Common Shares (and with the shares of any other capital
            stock of the Corporation).

                        (c) On and after the date of a redemption pursuant to
            Sections 3(a) or (b), the Corporation shall pay the applicable
            redemption price of a Series B Preferred Share to the holder thereof
            in cash upon surrender of the certificates therefor (properly
            endorsed or assigned for transfer, if the Board of Directors shall
            so require and the notice shall so state); provided that if such
            certificates are lost, stolen or destroyed, the Board of Directors
            may require such holder to indemnify the Corporation, in a
            reasonable amount and in a reasonable manner, prior to paying such
            redemption price. From and after the applicable redemption date
            (unless default shall be made by the Corporation in providing money
            for the full payment of the redemption price), dividends on the
            Series B Preferred Shares to be redeemed on such redemption date
            shall cease to accrue, and said shares shall no longer be deemed to
            be outstanding, and all rights of the holders thereof as
            shareholders of the Corporation (except the right to receive from
            the Corporation the redemption price) shall cease. In case fewer
            than all the shares represented by any such certificate are to be
            redeemed, a new certificate shall be issued representing the
            unredeemed shares without cost to the holder thereof. Any Series B
            Preferred Shares which shall at any time have been redeemed shall,
            after such redemption, have the status of authorized but unissued
            Preferred Shares, without designation as to series until such shares
            are once more designated as part of a particular series by the Board
            of Directors.

                        (d) Notwithstanding the foregoing, unless full
            cumulative dividends on all Series B Preferred Shares shall have
            been or contemporaneously are declared and paid or are declared and
            a sum sufficient for the payment thereof is set apart for payment
            for all past dividend periods and the then current dividend period,
            (i) no Series B Preferred Shares may be redeemed unless all
            outstanding Series B Preferred Shares are simultaneously redeemed in
            accordance with this Section 3 and (ii) the Corporation shall


                                                                               7


            not purchase or otherwise acquire directly or indirectly any Series
            B Preferred Shares; provided, however, that the foregoing shall not
            prevent the redemption on a pro rata basis of Series B Preferred
            Shares in accordance with this Section 3 or the purchase or
            acquisition of Series B Preferred Shares pursuant to a purchase or
            exchange offer made on the same terms to holders of all outstanding
            Series B Preferred Shares.

                        (e) If fewer than all of the outstanding Series B
            Preferred Shares are to be redeemed, the Series B Preferred Shares
            to be redeemed shall be selected pro rata (as nearly as may be
            practicable without creating fractional shares) or by any other
            equitable method determined by the Corporation.

                        4. Liquidation Rights. (a) Upon the voluntary or
            involuntary liquidation, dissolution, or winding up of the
            Corporation, each Series B Preferred Share shall entitle the holder
            thereof to receive and to be paid out of the assets of the
            Corporation available for distribution to its shareholders, before
            any payment or distribution shall be made on any Junior Securities
            with respect to the liquidation, dissolution, or winding up of the
            Corporation, a stated value in the amount of $1,000, plus an amount
            equal to all accrued and unpaid dividends to the date fixed for
            payment thereof (collectively, the "Series B Liquidation
            Preference").

                        (b) After the payment to the holders of Series B
            Preferred Shares of the full amount of the liquidation distribution
            to which they are entitled pursuant to Section 4(a), the holders of
            Series B Preferred Shares as such shall have no right or claim to
            any of the remaining assets of the Corporation.

                        (c) If, upon any voluntary or involuntary liquidation,
            dissolution or winding up of the Corporation, the amounts payable
            with respect to the Series B Preferred Shares and any other Parity
            Securities with respect to the liquidation, dissolution or winding
            up of the Corporation are not paid in full, the holders of the
            Series B Preferred Shares and of such other Parity Securities will
            share ratably in any such distribution of assets of the Corporation
            in proportion to the full respective values to which they are
            entitled.

                        (d) Neither the sale of all or substantially all of the
            property or business of the Corporation, nor the merger or
            consolidation of the Corporation into or with any other corporation
            or entity or the merger or consolidation of any other corporation or
            entity into or with the Corporation, shall necessarily be deemed to
            be a dissolution, liquidation or winding up, voluntary or
            involuntary, for the purposes of this Section 4.

                        5. Voting Rights. (a) Holders of Series B Preferred
            Shares will have no voting rights, except as set forth below or as
            otherwise required by law from time to time.

                        (b) So long as any Series B Preferred Shares are
            outstanding, the Corporation shall not take any of the following
            actions, without the prior consent or affirmative vote of the
            holders of at least two-thirds of all Series B Preferred Shares then


                                                                               8


            issued and outstanding, given in person or by proxy, either in
            writing or at a meeting called therefor (such holders of Series B
            Preferred Shares voting separately as a class):

                        (i) any amendment, alteration or change to the rights,
            preferences, privileges or powers of any Series B Preferred Share in
            any manner (whether by merger, consolidation, reclassification or
            otherwise) that adversely affects any shares thereof or present or
            future holders thereof;

                        (ii) any authorization, creation (by way of merger,
            consolidation, reclassification or otherwise) or issuance of any
            Senior Securities or Parity Securities of any kind;

                        (iii) any amendment, repeal or alteration of this
            Certificate of Amendment, the Certificate of Incorporation or Bylaws
            in any manner (by way of merger, consolidation, reclassification or
            otherwise) that adversely affects the present or future holders of
            the Series B Preferred Shares; or

                        (iv) any understanding, agreement or contract to do any
            of the foregoing.

            FOURTH: The Certificate of Incorporation is hereby further amended
to provide that 20,000 shares of the Corporation's authorized and unissued
Preferred Shares shall be designated as Series C Redeemable Participating
Preferred Shares (hereinafter referred to as the "Series C Preferred Shares"),
which shall have the following relative rights, preferences and limitations, as
fixed by the Corporation's Board of Directors pursuant to authority granted to
it under the Certificate of Incorporation and as permitted by Section 502 of the
Business Corporation Law:

                        1. Rank. (a) The terms "Senior Securities," "Parity
            Securities" and Junior Securities" shall have the meanings given to
            them in Section 1(a) of Article THIRD hereinabove.

                        (b) The Series C Preferred Shares shall rank senior to
            all Junior Securities, on a parity with all Parity Securities, and
            junior to all Senior Securities, in each case with respect to
            dividend rights or rights upon liquidation, dissolution or winding
            up of the affairs of the Corporation; provided that (i) the Series C
            Preferred Shares shall rank senior to the Series A Preferred Shares
            with respect to dividend rights and on a parity with the Series A
            Preferred Shares with respect to rights upon liquidation,
            dissolution or winding up of the Corporation and (ii) the Series C
            Preferred Shares shall rank on a parity with the Series B Preferred
            Shares with respect to dividend rights and rights upon liquidation,
            dissolution or winding up of the Corporation.

                        2. Dividends. (a) The holders of issued and outstanding
            Series C Preferred Shares shall be entitled to receive, when, as and
            if declared by the Board of Directors, cash dividends at an annual
            rate equal to 15% of the Series C Liquidation Preference (as defined
            below) (the "Series C Base Dividend"). In addition, the holders of
            issued and outstanding Series C Preferred Shares shall be entitled
            to participate with the


                                                                               9


            Class A Common Shares and to receive, before any dividends (whether
            in cash or in kind) are paid upon or set aside for the Class A
            Common Shares, the same dividends (whether in cash or in kind) as
            are distributed in respect of each Class A Common Share (the "Series
            C Participating Dividend"). One Series C Preferred Share shall be
            treated for purposes of such participation as being equal to 0.5
            (the "Series C Participation Number") shares of Class A Common
            Shares. Holders of Series C Preferred Shares shall not be entitled
            to any dividend, whether payable in cash or in kind, in excess of
            full cumulative Series C Base Dividends and Series C Participating
            Dividends, as specifically provided in this Article FOURTH. Series C
            Participation Dividends shall be paid at the same time as and when
            dividends on Class A Common Shares are paid to holders of Class A
            Common Shares.

                        (b) Series C Base Dividends shall accrue on a daily
            basis, cumulative from the date of issuance, and shall be payable
            semi-annually in arrears on the last day of each June and December,
            or, if such date is not a business day, the succeeding business day
            (each, a "Series C Base Dividend Payment Date"). Series C Base
            Dividends shall be computed on the basis of a 360-day year
            consisting of twelve 30-day months. Series C Base Dividends shall
            accrue and cumulate whether or not the Corporation has earnings or
            profits, whether or not there are funds legally available for the
            payment of dividends and whether or not dividends are declared.
            Series C Base Dividends shall be paid to the holders of record of
            Series C Preferred Shares as they appear on the records of the
            Corporation at the close of business on the 15th day of the calendar
            month in which the applicable Series C Base Dividend Payment Date
            falls or on such other date designated by the Board of Directors for
            the payment of Series C Base Dividends that is not more than 30 nor
            less than 10 days prior to such Series C Dividend Payment Date. Any
            payment of a Series C Base Dividend shall first be credited against
            the earliest accumulated but unpaid Series C Base Dividend due with
            respect to such share that remains payable.

                        (c) So long as any Series C Preferred Share is
            outstanding, no dividend (other than a dividend in Common Shares of
            the Corporation) shall be declared or paid or set aside for payment
            or other distribution declared or made upon any Junior Securities of
            any kind, nor shall any Junior Securities of any kind be redeemed,
            purchased or otherwise acquired for any consideration (or any moneys
            be paid to or made available for a sinking fund for the redemption
            of any shares of any such securities) by the Corporation (except by
            conversion into or exchange for other Junior Securities), unless, in
            each case, full cumulative dividends on all the Series C Preferred
            Shares have been or are contemporaneously declared and paid or are
            declared and a sum sufficient for the payment thereof is set apart
            for such payment for all past dividend periods and the then current
            dividend period. If dividends are not paid in full or a sum
            sufficient for such full payment is not so set apart upon the Series
            C Preferred Shares, all dividends declared upon the Series C
            Preferred Shares and any series of Parity Securities with respect to
            dividends shall be declared pro rata so that the amount of dividends
            declared per share of the Series C Preferred Shares and such series
            of Parity Securities with respect to dividends shall in all cases
            bear to each other the same ratio that accrued and unpaid


                                                                              10


            dividends per share on the Series C Preferred Shares and such series
            of Parity Securities with respect to dividends bear to each other.
            Notwithstanding anything to the contrary in this Section 2(c),
            Common Stock of the Corporation may be repurchased by the
            Corporation as required by the Sussman Shareholders Agreement (as
            defined in Article THIRD), as amended and in effect on the date of
            original issuance of the Series C Preferred Shares, and as
            thereafter amended, except for any amendment subsequent to the date
            of original issuance of the Series C Preferred Shares which causes
            the terms of such agreement to be less favorable in any respect to
            the Corporation or the holders of the Series C Preferred Shares.

                        (d) If the Corporation subdivides or splits the
            outstanding Class A Common Shares into a greater number of shares or
            combines the outstanding Class A Common Shares into a smaller number
            of shares, then the Series C Participation Number shall be adjusted,
            effective immediately after the relevant effective date, so as to
            represent the number of Class A Common Shares of the Corporation
            which would be represented by the then applicable Series C
            Participation Number upon the effective date of the subdivision,
            split or combination. As soon as practicable, the Corporation shall
            deliver by first class mail, postage prepaid, to each holder of
            Series C Preferred Shares a notice, certified as true and correct by
            an authorized person of the Corporation, stating the Series C
            Participation Number after such adjustment, a brief statement of the
            facts requiring such adjustment and the effective date of such
            adjusted Series C Participation Number; provided that the failure of
            the Corporation to give such notice shall not invalidate any
            corporate action by the Corporation.

                        3. Redemption.

                        (a) Optional Redemption. (i) During the period beginning
            90 days before and ending 90 days after the third anniversary, and
            each anniversary thereafter, of the date of original issuance of the
            Series C Preferred Shares (the "Series C Anniversary Period"), but
            only once per Series C Anniversary Period, the Corporation may
            redeem all, but not less than all, of the issued and outstanding
            Series C Preferred Shares by payment in cash for each share of
            Series C Preferred Share redeemed in an amount equal to (A) the
            Series C Liquidation Preference, plus (B) a pro rata amount equal to
            the product of the Equity Value (as defined below) multiplied by the
            Applicable Percentage (as defined below) as of the record date for
            such redemption (the "Equity Value Amount").

                        (ii) During each period that is after the first Series C
            Anniversary Period but is not a Series C Anniversary Period (a
            "Non-Series C Anniversary Period"), but only once per Non-Series C
            Anniversary Period, the Corporation may redeem all, but not less
            than all, of the issued and outstanding Series C Preferred Shares by
            payment in cash for each share of Series C Preferred Share redeemed
            in an amount equal to (A) the Series C Liquidation Preference, plus
            (B) an amount equal to the dividends that would have accrued after
            such redemption if such Series C Preferred Share was redeemed on the
            anniversary of the date of original issuance of the Series C
            Preferred Shares occurring in the Series C Anniversary Period
            immediately following such Non-Series C Anniversary Period, plus (C)
            the Equity Value Amount.


                                                                              11


                        (iii) "Equity Value" shall mean an amount equal to (A)
            the sum of (x) the product obtained by multiplying 7.5 by the
            greater of either the Corporation's trailing EBITDA (as defined
            below) for the most recent four full fiscal quarters (such period,
            the "Last Period") or the average of the Corporation's trailing
            EBITDA for the Last Period and the Corporation's EBITDA for the four
            full fiscal quarters immediately preceding the Last Period plus (y)
            the Corporation's cash and marketable securities, and minus (B) all
            outstanding indebtedness, minority interests, preferred stock,
            accrued environmental reserves, accrued currency reserves, accrued
            indebtedness for the Net Revenues Payment (as defined in Article
            FIFTH hereto, which definition is the same as that contained in
            Section 2.6(b) of the Asset Purchase Agreement, among Pfizer, Inc.,
            a Delaware corporation, the other Asset Selling Corporations (as
            defined therein), and the Corporation, dated as of September 28,
            2000 (the "Pfizer Agreement"))), and accrued indebtedness for Gross
            Profit Excluding Virginiamycin (as defined in Article FIFTH hereto,
            which definition is the same as that contained in Section 1.1 of the
            Pfizer Agreement). For each relevant fiscal quarter, the calculation
            of Equity Value and all of its components (including but not limited
            to the components of EBITDA) shall be based on figures that are
            reflected in (and only to the extent reflected in) the consolidated
            balance sheet and consolidated statements of income and cash flows
            of the Corporation as of and for such fiscal quarter, all of which
            must be prepared in accordance with generally accepted accounting
            principles consistently applied and audited by nationally recognized
            independent public accountants.

                        "EBITDA" shall mean, for any period, (x) the sum of
            income, all depreciation expenses, all amortization expenses, and
            any other non-cash expenses but excluding (y) all extraordinary
            losses, all interest expenses (net of interest income), all charges
            against income for federal, state and local taxes, all non-recurring
            expenses or charges, and extraordinary non-recurring gains, in each
            case based upon (and only to the extent reflected in) the audited
            financial statements of the Corporation used in calculating "Equity
            Value" in the immediately preceding paragraph; provided that, unless
            otherwise agreed to by a majority the holders of Series C Preferred
            Shares, payments for all earnout and royalty payments and all
            management fees shall be excluded from EBITDA.

                        "Applicable Percentage" shall mean, with respect to a
            redemption pursuant to Section 3(a) during a Series C Anniversary
            Period or a Non-Series C Anniversary Period or with respect to the
            calculation of Capital Stock Transaction Amount (as defined herein),
            the percentage listed below opposite the period in which the
            redemption occurs or in which the consummation of the Capital Stock
            Transaction occurs, respectively:


                                                                              12


Period                                                                Percentage
- ------                                                                ----------

September 1, 2003 to February 28, 2004                                14.00%

February 29, 2004 to February 28, 2005                                18.00%

March 1, 2005 to February 28, 2006                                    22.00%

March 1, 2006 to February 28, 2007                                    25.00%

March 1, 2007 to February 28, 2008                                    27.50%

February 29, 2008 and thereafter                                      30.00%

                        (iv) The Board of Directors shall fix a record date for
            the determination of the Series C Preferred Shares to be redeemed,
            and such record date shall not be more than 30 days nor less than 10
            days prior to the date of redemption. The Corporation shall deliver
            by first class mail, postage prepaid, a notice of redemption not
            less than 10 nor more than 30 days prior to the date of redemption,
            addressed to the holders of record of the Series C Preferred Shares
            as they appear in the records of the Corporation. No failure to give
            such notice or any defect therein or in the mailing thereof shall
            affect the validity of the proceedings for the redemption of any
            Series C Preferred Shares except as to the holder to whom notice was
            defective or not given. Each notice shall state the following: (A)
            the record date and date of redemption; (B) the redemption price;
            (C) the number of shares of Series C Preferred Stock to be redeemed;
            (D) the place where the Series C Preferred Shares are to be
            surrendered for payment of the redemption price; and (E) that
            dividends on the shares to be redeemed will cease to accrue on such
            redemption date.

                        (v) The Corporation may not redeem any share of Series C
            Preferred Shares pursuant to this Section 3(a) if any share of
            Series B Preferred Shares is outstanding, unless all outstanding
            shares of Series B Preferred Shares are redeemed concurrently with
            such redemption of Series C Preferred Shares.

                        (b) Mandatory Redemption. (i) On and at any time after
            the Mandatory Redemption Right Date (as defined in Article THIRD),
            the Series C Preferred Shares shall be subject to mandatory
            redemption by the Corporation at the option and election of the
            holder thereof at a price, payable in cash, for each share of Series
            C Preferred Share redeemed in an amount equal to (A) the Series C
            Liquidation Preference, plus (B) the Equity Value Amount. All shares
            of Series C Preferred Shares held by such holder electing for
            redemption under this clause (b) shall be redeemed.

                        (ii) The Corporation shall give notice to the holders of
            record of Series C Preferred Shares of this mandatory redemption
            right as soon as practicable after the Mandatory Redemption Right
            Date, by first class mail, postage prepaid, at their addresses as
            shown on the records of the Corporation. Each such notice shall
            state: (A) that, on and after such Mandatory Redemption Right Date,
            such holder has the right to require the Corporation to repurchase
            for cash all of such holder's Series C Preferred Shares; (B) the
            redemption price as of the Mandatory Redemption Right Date (it being
            understood that the actual redemption price will be determined as of
            the date on which the redemption occurs); (C) the place where the
            Series C Preferred Shares are to be surrendered for payment of the
            redemption price; and (D) that dividends on the shares to be
            redeemed will cease to accrue as of the date such shares are
            redeemed.


                                                                              13


                        (iii) The Corporation shall redeem each Series C
            Preferred Share requested to be redeemed by the holder thereof
            within 30 days of receipt by the Corporation of a notice from such
            holder requesting such redemption. If the Corporation fails for any
            reason to so redeem any one or more of the Series C Preferred Shares
            so requested to be redeemed, then, immediately upon the expiration
            of such 30-day period and for so long as the Corporation has not
            redeemed all of such Series C Preferred Shares requested to be
            redeemed, each Series C Preferred Share shall entitle the holder
            thereof to the same voting rights to which each Class A Common Share
            of the Corporation (and each share of any other capital stock of the
            Corporation) entitles the holder thereof; provided, however, no
            Series C Preferred Share shall entitle the holder thereof to any
            voting rights with respect to the election and removal of directors.
            The holders of Series C Preferred Shares shall vote together with
            the Class A Common Shares (and with the shares of any other capital
            stock of the Corporation).

                        (c) Capital Stock Transaction Adjustment. (i) The
            Corporation may not effect (A) any recapitalization of the
            Corporation or reclassification of any capital stock of the
            Corporation, (B) any consolidation, merger or combination of the
            Corporation with or into another corporation or entity, (C) any sale
            or conveyance of all or substantially all of the assets of the
            Corporation to any person or entity as a result of which holders of
            any capital stock of the Corporation shall be entitled to receive
            cash, stock, securities or other property with respect to or in
            exchange for such capital stock, (D) any initial public offering of
            any capital stock of the Corporation, or (E) any redemption,
            acquisition or other purchase of any Junior Securities or Parity
            Securities (other than Series B Preferred Shares or Series C
            Preferred Shares) of the Corporation (collectively, a "Capital Stock
            Transaction"), unless (x) the amount of the Series C Liquidation
            Preference is increased by the Capital Stock Transaction Amount (as
            defined below), if any, with respect to all outstanding Series C
            Preferred Shares as of the date of the consummation of the Capital
            Stock Transaction, and (y) if such Capital Stock Transaction occurs
            during the one-year period following the redemption of any Series C
            Preferred Shares, then immediately prior to or concurrently with the
            consummation of the Capital Stock Transaction, the Corporation pays
            in cash the Capital Stock Transaction Amount, if any, to each person
            or entity that was the last holder of record of a Series C Preferred
            Share that was redeemed during the 360-day period preceding the date
            of the consummation of such Capital Stock Transaction. "Capital
            Stock Transaction Amount" means a pro rata amount equal to the
            excess, if any, of (1) the aggregate value of the outstanding
            shares, fully diluted, of all classes of Common Stock of the
            Corporation based on, but immediately prior to the consummation of,
            the Capital Stock Transaction multiplied by the Applicable
            Percentage as of the date of the consummation of the Capital Stock
            Transaction over (2) the Equity Value Amount immediately prior to
            the consummation of the Capital Stock Transaction.

                        (ii) The Corporation shall deliver by first class mail,
            postage prepaid, a notice of entering into a Capital Stock
            Transaction as soon as practicable and in any event not less than 20
            days prior to the date of consummation thereof, addressed to the
            holders of record of the Series C Preferred Shares and, if clause
            (y) of subsection (i) is applicable, such former holders of record
            of the Series C Preferred Shares, as they appear in the


                                                                              14


            records of the Corporation. Each notice shall state the following:
            (A) a brief description of the Capital Stock Transaction and (B), if
            applicable, the Capital Stock Transaction Amount and the method of
            calculation therefor.

                        (d) On and after the date of a redemption pursuant to
            Sections 3(a) or (b), the Corporation shall pay the applicable
            redemption price of a Series C Preferred Share to the holder thereof
            in cash upon surrender of the certificates therefor (properly
            endorsed or assigned for transfer, if the Board of Directors shall
            so require and the notice shall so state); provided that if such
            certificates are lost, stolen or destroyed, the Board of Directors
            may require such holder to indemnify the Corporation, in a
            reasonable amount and in a reasonable manner, prior to paying such
            redemption price. From and after the applicable redemption date
            (unless default shall be made by the Corporation in providing money
            for the full payment of the redemption price), dividends on the
            Series C Preferred Shares to be redeemed on such redemption date
            shall cease to accrue, and said shares shall no longer be deemed to
            be outstanding, and all rights of the holders thereof as
            shareholders of the Corporation (except the right to receive from
            the Corporation the redemption price and any Capital Stock
            Transaction Amount) shall cease. In case fewer than all the shares
            represented by any such certificate are to be redeemed, a new
            certificate shall be issued representing the unredeemed shares
            without cost to the holder thereof. Any Series C Preferred Shares
            which shall at any time have been redeemed shall, after such
            redemption, have the status of authorized but unissued Preferred
            Shares, without designation as to series until such shares are once
            more designated as part of a particular series by the Board of
            Directors.

                        (e) Notwithstanding the foregoing, unless full
            cumulative dividends on all Series C Preferred Shares shall have
            been or contemporaneously are declared and paid or are declared and
            a sum sufficient for the payment thereof is set apart for payment
            for all past dividend periods and the then current dividend period,
            (i) no Series C Preferred Shares may be redeemed unless all
            outstanding Series C Preferred Shares are simultaneously redeemed in
            accordance with this Section 3 and (ii) the Corporation shall not
            purchase or otherwise acquire directly or indirectly any Series C
            Preferred Shares; provided, however, that the foregoing shall not
            prevent the purchase or acquisition of Series C Preferred Shares
            pursuant to a purchase or exchange offer made on the same terms to
            holders of all outstanding Series C Preferred Shares.

                        4. Liquidation Rights. (a) Upon the voluntary or
            involuntary liquidation, dissolution, or winding up of the
            Corporation, each Series C Preferred Share shall entitle the holder
            thereof to receive and to be paid out of the assets of the
            Corporation available for distribution to its shareholders, before
            any payment or distribution shall be made on any Junior Securities
            with respect to the liquidation, dissolution, or winding up of the
            Corporation, (i) a stated value in the amount of $1,000 (as adjusted
            by the Capital Stock Transaction Amount, if any), plus an amount
            equal to all accrued and unpaid dividends to the date fixed for
            payment thereof (collectively, the "Series C Liquidation
            Preference"), plus (ii) the Equity Value Amount.


                                                                              15


                        (b) After the payment to the holders of Series C
            Preferred Shares of the full amount of the liquidation distribution
            to which they are entitled pursuant to Section 4(a), the holders of
            Series C Preferred Shares as such shall have no right or claim to
            any of the remaining assets of the Corporation.

                        (c) If, upon any voluntary or involuntary liquidation,
            dissolution or winding up of the Corporation, the amounts payable
            with respect to the Series C Preferred Shares and any other Parity
            Securities with respect to the liquidation, dissolution or winding
            up of the Corporation are not paid in full, the holders of the
            Series C Preferred Shares and of such other Parity Securities will
            share ratably in any such distribution of assets of the Corporation
            in proportion to the full respective values to which they are
            entitled.

                        (d) Neither the sale of all or substantially all of the
            property or business of the Corporation, nor the merger or
            consolidation of the Corporation into or with any other corporation
            or entity or the merger or consolidation of any other corporation or
            entity into or with the Corporation, shall necessarily be deemed to
            be a dissolution, liquidation or winding up, voluntary or
            involuntary, for the purposes of this Section 4.

                        5. Voting Rights. (a) Holders of Series C Preferred
            Shares will have no voting rights, except as set forth below or as
            otherwise required by law from time to time.

                        (b) So long as any Series C Preferred Shares are
            outstanding, the Corporation shall not take any of the following
            actions, without the prior consent or affirmative vote of the
            holders of at least two-thirds of all Series C Preferred Shares then
            issued and outstanding, given in person or by proxy, either in
            writing or at a meeting called therefor (such holders of Series C
            Preferred Shares voting separately as a class):

                        (i) any amendment, alteration or change to the rights,
            preferences, privileges or powers of any Series C Preferred Share in
            any manner (whether by merger, consolidation, reclassification or
            otherwise) that adversely affects any shares thereof or present or
            future holders thereof;

                        (ii) any authorization, creation (by way of merger,
            consolidation, reclassification or otherwise) or issuance of any
            Senior Securities or Parity Securities of any kind;

                        (iii) any amendment, repeal or alteration of this
            Certificate of Amendment, the Certificate of Incorporation or Bylaws
            of the Corporation in any manner (by way of merger, consolidation,
            reclassification or otherwise) that adversely affects the present or
            future holders of the Series C Preferred Shares; or

                        (iv) any understanding, agreement or contract to do any
            of the foregoing.


                                                                              16


            FIFTH: The following terms, as used in this Certificate of
Amendment, shall have the definitions set forth below.

            1. Definition of Change of Control. "Change of Control" means the
occurrence of any of the following events after the date of filing this
Certificate of Amendment: (i) any "person" or "group" (as such terms are used in
Sections 13(d) and 14(d) of the Exchange Act) (other than one or more Permitted
Holders) is or becomes (including by merger, consolidation or otherwise) the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange Act,
except that a Person shall be deemed to have beneficial ownership of all shares
that such Person has the right to acquire, whether such right is exercisable
immediately or only after the passage of time), directly or indirectly, of 50%
or more of the voting power of the total outstanding Voting Stock of the
Corporation; (ii) during any period of two consecutive years, individuals who at
the beginning of such period constituted the Board of Directors of the
Corporation (together with any new directors whose election to such Board of
Directors, or whose nomination for election by the stockholders of the
Corporation, was approved by a vote of 66-2/3% of the directors then still in
office who were either directors at the beginning of such period or whose
election or nomination for election was previously so approved) cease for any
reason to constitute a majority of such Board of Directors of the Corporation
then in office; (iii) the approval by the holders of Capital Stock of the
Corporation of any plan or proposal for the liquidation or dissolution of the
Corporation as a whole and not any Restricted Subsidiary or Guarantor (whether
or not otherwise in compliance with the terms of the Indenture); or (iv) the
sale or other disposition (other than by way of merger or consolidation) of all
or substantially all of the Capital Stock or assets of the Corporation and its
Restricted Subsidiaries taken as a whole to any person or group (as defined in
Rule 13d-5 of the Exchange Act) (other than to one or more of the Permitted
Holders) as an entirely or substantially as an entirety in one transaction or a
series or related transactions, unless the "beneficial owners" of the Voting
Stock of such Person immediately prior to such transaction own, directly or
indirectly, more than 50% of the total voting power of such Person immediately
after such transaction.

            As used in the above definition of "Change of Control" and in the
definitions that follow, the following terms have the meanings set forth below:

            "Affiliates" means, with respect to any specified Person, any other
      Person directly or indirectly controlling or controlled by or under direct
      or indirect common control with such specified Person. For purposes of
      this definition, "control" (including, with correlative meanings, the
      terms "controlling," "controlled by" and "under common control with") of
      any Person means the possession, directly or indirectly, of the power to
      direct or cause the direction of the management and policies of such
      Person, whether through the ownership of voting securities, by agreement
      or otherwise.

            "Capital Stock" of any Person means any and all shares, interests,
      rights to purchase, warrants, options, participations or other equivalents
      of or interests in (however designated) corporate stock or other equity
      participations, including partnership interests, whether general or
      limited, of such Person, including any Preferred Stock.


                                                                              17


            "Exchange Act" means the Securities Exchange Act of 1934, as
      amended, and the rules and regulations of the Securities and Exchange
      Commission promulgated thereunder.

            "Guarantor" means (i) the domestic Subsidiaries of the Corporation
      on the Issue Date, (ii) each of the Corporation's Restricted Subsidiaries
      which become Restricted Subsidiaries after the Issue Date and which are
      organized in the United States, and (iii) each of the Corporation's
      Restricted Subsidiaries that in the future executes a supplemental
      indenture in which such Restricted Subsidiary agrees to be bound by the
      terms of the Indenture as a Guarantor.

            "Issue Date" means the date on which the Notes are first issued
      under this Indenture.

            "Permitted Holders" means (i) Jack Bendheim; (ii) each of his
      spouse, siblings, ancestors, descendants (whether by blood, marriage or
      adoption, and including stepchildren) and the spouses, siblings, ancestors
      and descendants (whether by blood, marriage or adoption, and including
      stepchildren) of such natural persons, the beneficiaries, estates and
      legal representatives of any of the foregoing, the trustee of any bona
      fide trust of which any of the foregoing, individually or in the
      aggregate, are the majority in interest beneficiaries or grantors, and any
      corporation, partnership, limited liability company or other Person in
      which any of the foregoing, individually or in the aggregate, own or
      control a majority in interest; and (iii) all Affiliates controlled by the
      individual named in clause (i) above.

            "Person" means any individual, corporation, partnership, joint
      venture, association, joint-stock company, limited liability company,
      trust, unincorporated organization or government or any agency or
      political subdivision thereof.

            "Preferred Stock" as applied to the Capital Stock of any Person,
      means Capital Stock of any class or classes (however designated) which is
      preferred as to the payment of dividends or distributions, or as to the
      distribution of assets upon any voluntary or involuntary liquidation or
      dissolution of such Person, over Capital Stock of any other class of such
      Person.

            "Restricted Subsidiary" means each direct or indirect Subsidiary of
      the Corporation other than an Unrestricted Subsidiary.

            "Subsidiary" of a Person means (i) any corporation more than 50% of
      the outstanding voting power of the Voting Stock of which is owned or
      controlled, directly or indirectly, by such Person or by one or more other
      Subsidiaries of such Person, or by such Person and one or more other
      Subsidiaries thereof, or (ii) any limited partnership of which such Person
      or any Subsidiary of such person is a general partner, or (iii) any other
      person (other than a corporation or limited partnership) in which such
      Person or one or more other Subsidiaries of such Person, or such Person
      and one or more other Subsidiaries thereof, directly or indirectly, have
      more than 50% of the outstanding


                                                                              18


      partnership or similar interests or have the power, by contract or
      otherwise, to direct or cause the direction of the policies, management
      and affairs thereof.

            "Unrestricted Subsidiary" means any Subsidiary of the Corporation
      designated as such pursuant to and in compliance with Section 4.14 of the
      Indenture and not redesignated a Restricted Subsidiary in compliance with
      such Section.

            "Voting Stock" of a Person means Capital Stock of such Person of the
      class pursuant to which the holders thereof have the general voting power
      under ordinary circumstances to elect at least a majority of the board of
      directors, managers or trustees of such Person (irrespective of whether or
      not at the time stock of any other class or classes shall have or might
      have voting power by reason of the happening of any contingency).

            2. Definition of Net Revenues Payment. "Net Revenues Payment" means
Net Virginiamycin Revenues for the most recently completed Measurement Period.

            In the above definition of "Net Revenues Payment" and in the
definitions that follow, the following terms have the meanings set forth below:

            "Affiliate" means, with respect to any Person, any other Person
      directly or indirectly controlling, controlled by, or under common control
      with, such Person at any time during the period for which the
      determination of affiliation is being made.

            "Closing Date" means the date on which the closing of the
      transactions contemplated by the Pfizer Agreement occurs.

            "Measurement Period" means the three (3)-month period commencing on
      the first day of the month following the month in which the Closing Date
      occurs and ending on the last day of the month that is three (3) months
      after the month in which the Closing Date occurs, and each of the nineteen
      (19) successive three (3)-month periods thereafter commencing on the first
      day of the month following the most recently completed Measurement Period
      and ending on the last day of the month in which the fifth anniversary of
      the Closing Date occurs.

            "Net Virginiamycin Revenues" means the gross invoice value of all
      sales of Virginiamycin by the Corporation and/or its Affiliates to third
      parties, net of (regardless of the period to which any such items apply)
      (i) all applicable bona fide trade and volume discounts and rebates and
      allowances to customers accrued on such sales and (ii) credits,
      allowances, refunds, returns and adjustments actually granted to customers
      on account of spoiled, damaged, outdated or returned goods; provided that
      in the event sales of Virginiamycin are bundled with other products of the
      Corporation, the portion of the gross invoice value derived from the sale
      of the bundled products attributable to Virginiamycin for purposes hereof
      shall be in proportion to the most recent published sales price for
      Virginiamycin as compared to the most recent published sales price for the
      other bundled products. Net Virginiamycin Revenues also shall include net
      royalty payments, fees and other payments relating to Virginiamycin
      received by the Corporation


                                                                              19


      and/or its Affiliates from licensees or distributors of Virginiamycin and
      other third parties appointed by the Corporation serving a similar
      function. Notwithstanding the foregoing, there shall not be included in
      "Net Virginiamycin Revenues" sales of Virginiamycin by the Corporation
      and/or its Affiliates to Pfizer, Inc. and/or its Affiliates pursuant to
      the arrangements relating to Egypt, Algeria and India entered into by the
      parties pursuant to the terms of the Pfizer Agreement.

            "Person" means an individual, a corporation, a partnership, an
      association, a trust or other entity or organization.

            "Products" means certain feed additive products listed on Schedule 1
      of the Pfizer Agreement.

            "Virginiamycin" means any of the Products which contain as their
      active ingredient the composite virginiamycin antibiotic.

            3. Definition of Gross Profit Excluding Virginiamycin. "Gross Profit
Excluding Virginiamycin" means net sales (gross sales less returns and
allowances) by the Corporation and/or its Affiliates to third parties less its
and/or their actual cost of sales (standard cost plus manufacturing variances
and the impact of inventory revaluations) for all Products, excluding
Virginiamycin, and any extensions, improvements, substitutes or replacements
therefor, in each case that contain the same active ingredients as are used in
the Products, excluding Virginiamycin; provided, however, that gross profit in
respect of any products acquired by the Corporation or its Affiliates after the
Closing Date containing the same active ingredients as are used in the Products
(excluding Virginiamycin) shall not be included in such calculation if the
acquired products are sold under a trademark or brand name other than those
included in the Trademark Rights acquired by the Corporation hereunder. Gross
Profit Excluding Virginiamycin also shall include net royalty payments, fees and
other payments relating to the foregoing Products (including the aforementioned
extensions, improvements, substitutes or replacements) received by the
Corporation and/or its Affiliates from licensees and distributors of the
foregoing Products and other third parties appointed by the Corporation serving
a similar function. For purposes of determining cost of sales, the manufacturing
variances and the impact of inventory revaluations shall be appropriately
allocated between Virginiamycin and the other Products based on specific
identification, if feasible, or any other reasonable method that results in a
fair and equitable allocation.

            In the above definition of "Gross Profit Excluding Virginiamycin,"
the term "Trademark Rights" means registered and unregistered trademarks,
service marks, brand names and certification marks set forth on Schedule 5.12 of
the Pfizer Agreement, and the goodwill associated with the foregoing and
registrations in any jurisdiction of, and applications in any jurisdiction to
register, the foregoing, including any extension, modification or renewal of any
such registration or application. Other capitalized terms contained in this
Section 3 of Article FIFTH not otherwise defined in this Section 3 of Article
FIFTH shall have the meanings ascribed thereto in Section 2 of Article FIFTH.


                                                                              20


            SIXTH: These amendments to the Certificate of Incorporation were
authorized and approved by the Board of Directors of the Corporation at a
meeting duly held therefor.

                     [Rest of page intentionally left blank]


                                                                              21


            IN WITNESS WHEREOF, the undersigned are authorized to act on behalf
of the Corporation and have signed and executed this Certificate of Amendment,
in their respective capacities as indicated below, on November 30, 2000.


                                              /s/
                                        ----------------------------------------
                                        Jack C. Bendheim, President


                                              /s/
                                        ----------------------------------------
                                        Joseph M. Katzenstein, Secretary