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A Formula for Evaluating Feeds on the Basis of Digestible Nutrients¹

Division of Dairy Husbandry, University of Minnesota

ABSTRACT

The nutritive value is an important consideration in the selection of a feed, although not the only consideration. The modern feeding standards prescribe the requirements of the cow in terms of digestible crude protein and total digestible nutrients and intelligent feeders appreciate the necessity of supplying the minimum amounts of the two groups of nutrients for good results.

It is common knowledge that feeds vary greatly in composition and in price. It is also factual that high protein feeds as a rule are higher priced than lower protein feeds and that the difference varies from year to year. In the purchase of a feed, therefore, two questions must be answered: First, does it supply the required nutrients, and second, is it a reasonably cheap source of these nutrients?

The problem of economical source of nutrients has long been recognized and attempts have been made to indicate relative cheapness of nutrients in different feeds.

¹ Published with the approval of the Director as Paper No. 1050, Journal Series, Minnesota Experiment Station.