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Distillers Feeds as Protein Supplements in Concentrate Mixtures for Milking Cows

Department of Animal Husbandry, Cornell University, Ithaca, N. Y.

ABSTRACT

All experiment comparing corn distillers dried grains, corn distillers dried grains with solubles, and corn distillers dried solubles was conducted with lactating dairy cows.

A slight though not statistical advantage was observed for corn distillers dried grains over both corn distillers dried solubles and corn distillers dried grains with solubles for the efficiency of production as well as the total production of fat-corrected milk. Corn distillers dried grains increased the fat percentage of the milk slightly. The data confirm previous studies as to the usefulness of corn distillery by-products when used to make up as much as 40% of the concentrate mixture. It appears that the corn distillers dried solubles, although extremely useful in nonruminant feeding, do not have a unique value for lactating dairy cows fed liberal amounts of corn silage and hay.