J. Anim Sci.
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J. Anim Sci. 1951. 10:50-56.
© 1951 American Society of Animal Science
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Effect of Body Weight on the Biological Value of Proteins for Growing Swine1

J. M. Bell and J. K. Loosli2

University of Saskatchewan and Cornell University

Abstract

Data are presented to show that the biological value of protein fed at a level of 10% decreases as pigs increase in body weight. It is suggested that studies on biological value of protein for growing pigs be designed to permit analyses by covariance as a means of measuring the collective errors introduced by variables associated with advancing weight and age. Comparisons of data from various studies may then be made without confounding with these factors.

Footnotes

1 This work was supported in part by a grant from the Herman Frasch Foundation to Cornell University.

2 The authors are grateful to Drs. L. A. Maynard and H. H. Williams for advice during the studies and to Dr. C. R. Henderson for reading the manuscript.






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Copyright © 1951 by the American Society of Animal Science.