J. Anim Sci.
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J. Anim Sci. 1972. 35:38-40.
© 1972 American Society of Animal Science
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Correlation of Nitrogen to the Heat of Combustion of Rat Urine

Mary Ann May1 and T. S. Nelson

University of Arkansas, Fayetteville 72701

Abstract

The r2 of total nitrogen to total energy of rat urine was 0.98. The equation for estimating the energy content of urine was Y=7.00 x+6.56 (Y=total gross energy of urine in kcal; X=total g nitrogen in urine). The average urinary energy was 10.12±0.24 kcal/g nitrogen. Predictions of urinary energy derived from this ratio and from the regression equation were similar at low levels of nitrogen(ca. 2 g) but diverged at higher levels.

Footnotes

1 Present address: Rosebud, Arkansas 72135.






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Copyright © 1972 by the American Society of Animal Science.