Effect of Coprophagy on Protein Utilization in the Rat

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Abstract
Diets differing widely in protein quality were fed to male weanling rats, and the effect of coprophagy on protein utilization was determined. In a metabolism study in which animals consumed 5 g daily of diets containing 10% protein, preventing coprophagy decreased biological value and nitrogen absorption, and increased urinary nitrogen excretion and metabolic fecal nitrogen. In a growth study in which animals consumed diets containing 10% protein and libitum, coprophagy prevention resulted in lower protein efficiency ratios and weight gains, but had little effect on feed intake.

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