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Influence of Two Planes of Feeding and Care upon Milk Production

Bureau of Dairy Industry, United States Department of Agriculture, Beltsville, Md.

ABSTRACT

When testing for the Advanced Registry and the Register of Merit was started at the dairy experiment station of the Bureau of Dairy Industry a number of years ago, it was noticed that the cows when on test produced a great deal more milk than they did when milked and fed only twice a day and otherwise managed in much the same way that any good dairyman might take care of his herd. This led to some specific experiments with certain animals to ascertain how much increase might be expected by keeping them under test conditions, and also to the tabulation of data regarding other animals which in the ordinary course of events were found to have made yearly records under each of the two conditions called for convenience "test" and "herd."

In brief, the test conditions were as follows: Keeping the cows in boxstalls, milking three times a day, feeding three times a day, feeding a large quantity of alfalfa hay and a small quantity of silage, feeding somewhat in excess of requirements as computed from the common feeding standards, feeding beet pulp, breeding to freshen about fifteen months from previous calving, and allowing no pasture.