Hormone induced lordosis and its relation to masculine sexual activity in male rats
van de Poll, N.E.; van Dis, H.
Hormones and Behavior 8(1): 1-7
1977
ISSN/ISBN: 0018-506X PMID: 863390 DOI: 10.1016/0018-506x(77)90015-0Document Number: 433374
Intact and castrated male rats were injected with a single dose of estrogen (75 .mu.g), followed by progesterone (1 mg) or by oil. Intact males showed higher lordosis quotients as compared to castrated males. Progesterone facilitated lordosis behavior in castrated and in intact males. An estrogen-progesterone treated group of sexually inactive male rats and of sexually exhausted males showed lower levels of lordosis as compared to the intact sexually active males.
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