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The Effect of Daily Massive Doses of Viosterol upon Calcium and Phosphorus Metabolism and Blood Calcium and Inorganic Phosphorus in Calves¹

Chemical Laboratory and Department of Dairy Husbandry, Michigan Agricultural Experiment Station, East Lansing

ABSTRACT

The feeding of large daily doses of viosterol to young calves decreased the total excretions of calcium and phosphorus.

There was an increase in the absorption of calcium and phosphorus from the intestine. The excretion of calcium in the feces was decreased, whereas the excretion in the urine was greatly increased.

The concentration of calcium in the blood plasma was not as markedly increased as the inorganic phosphorus due to viosterol feeding. There was a tendency for the blood calcium to decrease and the phosphorus to increase some hours prior to death.

Calves apparently show an idiosyncrasy to the development of hypercalcemia under the conditions of this experiment.

¹ Published with the permission of the Director of the Experiment Station as Journal Article No. 156 (n.s.).