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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
13/11/2023 |
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Autoria: |
LINDSAY, D. R.; ROBINSON, T. J. |
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Título: |
Oestrogenic and anti-oestrogenic activity of androgens in the ewe. |
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Ano de publicação: |
1964 |
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Fonte/Imprenta: |
Journal of Reproduction and Fertility, v. 7, n. 3, p. 267-274, Jun., 1964. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Seventy-two spayed crossbred ewes were used in a series of five successive tests, at intervals of 15 days, in a study of the actions and interactions of androgen, oestrogen and progesterone on behavioural and vaginal oestrous responses. Androgen and oestrogen were additive in their action (128 vs. 62 services; P<0·001) on behavioural response, but androgen almost completely inhibited the expected vaginal response to oestrogen. There was a significant linear decline in behavioural sensitivity from test to test; in the five successive tests, forty-eight, forty-three, thirty-seven, thirty-two and thirty ewes were served (P<0·001). This refractory condition was partly offset by progesterone pretreatment (P<0·001), but oestrogen was necessary to maintain a constant state of psychic reactivity to androgen (P<0·001). A highly significant linear dose-response relationship was demonstrated with both testosterone and testosterone propionate (P<0·001). |
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Thesagro: |
Endocrinologia; Estrógeno; Fisiologia; Ovino; Reprodução. |
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Thesaurus Nal: |
Endocrinology; Estrogens; Reproduction; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
null
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
