J. Anim Sci.
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J. Anim Sci. 1945. 4:367-372.
© 1945 American Society of Animal Science
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Relation of Production of Dairy Cows to the Nutrients Fed

F. B. Headley1

University of Nevada

Abstract

A logarithmic method is presented of estimating the production of milk at any feeding level when the production of a group of cows at one feeding level is known.

The accuracy of this method is compared with a straight line method and the curve of diminishing returns.

It is concluded that the straight line method is not sufficiently accurate if a single equation were to be formulated for all groups for which data are given by Jensen et al. (1942). The diminishing-returns formula requires the determination of production of any group at several feeding levels before the full curve can be calculated.

The method of estimating the production at any feeding level is given in the text. It is based on the mantissa of the logarithm of the total digestible nutrients fed above maintenance, plus a constant.

Footnotes

1 Chief, Department of Farm Development, University of Nevada, Reno, Nevada.






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