Effect of Diet upon Levels of Plasma Growth Hormone in Sheep

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Abstract
Two experiments were conducted with sheep fed diets containing hay or hay with grain to study the effect of feeding, fasting and plane of nutrition on concentrations of plasma growth hormone. Feeding or fasting for up to 72 hr. had no significant influence on plasma growth hormone, even though concentrations of blood glucose were depressed and plasma free fatty acids were elevated in the fasting animals. In one experiment, the sheep fed grain had slightly lower levels of plasma growth hormone; while in a second experiment, no significant differences in plasma growth hormone were found in sheep fed diets containing three levels of energy at two levels of intake. These results indicate that diet had no marked effect on the concentration of plasma growth hormone in sheep. Copyright © 1971. American Society of Animal Science. Copyright 1971 by American Society of Animal Science.

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