Pituitary and testicular responses in sexually mature bulls after intravenous injections of graded doses of LH-releasing hormone.

Abstract

The capacity of the anterior pituitary gland and testes in mature bulls (705 +/- 9 (S.E.M.) kg body wt, n = 4) to respond to graded doses of LH-releasing hormone (LHRH) was assessed relative to endogenous profiles of LH and testosterone secretion. Endogenous hormone profiles were determined by bleeding bulls at 20-min intervals for 12 h. Responses to LHRH… (More)

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