Animal Health
Net sales of $141.0 million for the three months ended September 30, 2021, increased $12.6 million, or 10%. Net sales of MFAs and other increased $5.1 million, or 6%, driven by stronger international demand, primarily for poultry and cattle products in the Latin America and Southeast Asia regions, partially offset by timing of certain domestic and other international customer orders. Net sales of nutritional specialty products increased $3.4 million, or 10%, driven by strong international demand in dairy products. Net sales of vaccines increased $4.2 million, or 25%, driven by growth across all major markets, but primarily stronger demand in Eastern Europe and India.
Mineral Nutrition
Net sales of $54.4 million for the three months ended September 30, 2021, increased $3.0 million, or 6%, driven by increased average selling prices, partially offset by lower volumes. The increase in average selling prices is correlated with the movement of the underlying raw material costs.
Performance Products
Net sales of $19.2 million for the three months ended September 30, 2021, increased $3.8 million, or 25%. The increase was driven by strong demand for copper-based products coupled with increased selling prices correlated with underlying raw material costs.
Gross profit
Gross profit of $64.7 million for the three months ended September 30, 2021, increased $0.6 million, or 1%, as compared to the three months ended September 30, 2020. Gross margin decreased 270 basis points to 30.1% of net sales for the three months ended September 30, 2021, as compared to 32.8% for the three months ended September 30, 2020.
Animal Health gross profit decreased $1.3 million due to higher logistics and manufacturing costs, as well as unfavorable geographic and product mix. Mineral Nutrition gross profit increased $1.6 million, driven primarily by higher average selling prices and favorable product mix. Performance Products gross profit increased $0.2 million driven by volumes.
Selling, general and administrative expenses
Selling, general and administrative expenses (“SG&A”) of $50.1 million for the three months ended September 30, 2021, increased $1.6 million, or 3%, as compared to the three months ended September 30, 2020. SG&A for the three months ended September 30, 2020, included $0.6 million of stock-based compensation. Excluding these costs, SG&A increased $2.2 million, or 5%.
Animal Health SG&A increased $1.1 million, due to investments in market expansion initiatives in certain international regions, as well as increased marketing and sales team travel costs. Mineral Nutrition and Performance Products SG&A were comparable to the prior year. Corporate SG&A increased $0.4 million due to incremental investments in strategic initiatives and higher compensation costs, partially offset by the decrease in stock-based compensation.
Interest expense, net
Interest expense, net of $2.9 million for the three months ended September 30, 2021, increased $0.1 million, or 3%, as compared to the three months ended September 30, 2020. Interest expense, net increased primarily due to higher levels of debt outstanding and lower interest income, partially offset by favorable variable borrowing rates.
Foreign currency (gains) losses, net
Foreign currency (gains) losses, net for the three months ended September 30, 2021, amounted to net losses of $2.1 million, as compared to $3.6 million of net gains for the three months ended September 30, 2020. Foreign currency (gains) losses, net primarily arose from intercompany balances, driven by the weakening of the Turkish, Mexican and Brazilian currencies relative to the U.S. dollar.