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Control of phosphorus balance in ruminants

Control of phosphorus balance in ruminants

Aspects of digestive physiology in ruminants Proceedings of a Satellite Symposium of the 30th International Congress of the International Union of Physiological Sciences, July 21-23, 1986 Ithaca, New York: 156-174

Ruminants fed on poor-quality roughage diets usually excrete very little phosphorus in their urine. Major adjustments in P balance are achieved, via the gut, through changes both in salivary P secretion and in the efficiency with which this is reabsorbed by the intestine. The urine does, however, appear to be of greater importance as a route for P excretion when pelleted, finely ground, or highly digestible diets are given.

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