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Value of Corn Distillers Dried Grains, Soybean Oil Meal, Heated Soybeans, and Soybean Oil Meal Plus Starch for Milk Production

Department of Animal Husbandry, Cornell University, Ithaca, New York

ABSTRACT

Corn distillers dried grains were compared with different soybean products in concentrate mixtures for milking cows. Solvent extracted soybean oil meal and corn distillers dried grains with solubles were approximately equal in value when they supplied the primary supplemental protein in a concentrate mixture. When heated soybeans, containing all of the fat, were used to furnish an equal amount of protein, cows produced 2.5 lb. more milk daily and the milk was 0.14 percentage unit lower in fat content than with solvent extracted soybean oil meal. The addition of purified starch to the concentrate in an amount to furnish energy equal to the fat in the heated soybeans had no significant effect on milk yield or the fat percentage of the milk.