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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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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: |
07/12/2023 |
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Autoria: |
TILBROOK, A. J. |
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Título: |
The influence of factors associated with oestrus on the sexual 'attractiveness' of ewes to rams. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Applied Animal Behaviour Science, v. 17, n. 1/2, p. 117-128, 1987. |
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DOI: |
https://doi.org/10.1016/0168-1591(87)90014-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The influence on sexual ?attractiveness? of ewes of the stage of oestrus of the ewes, the dose of oestradiol benzoate (ODB) used to induce oestrus, the oestrous state of the ewes and the order that the ewes had been detected in oestrus were considered in 4 experiments. In the first experiment, 12 rams were individually presented with 4 oestrous ewes that were in proportionately different stages of oestrus, and the amount of mating and courtship directed from the rams to the ewes in 3 h was recorded. For Experiment 2, two groups of ovariectomised ewes of known sexual ?attractiveness? were placed in each group. After a period of progesterone priming, oestrus was induced in 3 of the ewes in each group with an injection of 50 ?g ODB, while the other 3 ewes in each group received an injection of 150 ?g ODB. Ten rams then ranked the ewes in each group for ?attractiveness?. In Experiment 3, an attempt was made to get the 10 rams to rank the ewes from Experiment 2 for sexual ?attractiveness? when the ewes were not in oestrus. In Part 1 of Experiment 4, a ram was placed with 6 ovariectomised ewes that had been prepared to come into oestrus and the animals were observed continuously. When a ewe permitted mounting, she was considered to be in oestrus and was removed from the pen. In this way the order that the ewes were detected in oestrus was established and the ram was then permitted to rank this group of oestrous ewes for ?attractiveness?. Ten rams were used, each with a different group of ewes. Vasectomized rams were used in Part 2 of this experiment to detect the order that a group of 6 ewes came into oestrus, and then the 10 rams ranked these ewes for ?attractiveness?. Stage of oestrus had no significant influence on the amount of sexual behaviour directed from the rams to the ewes, and sexual ?attractiveness? was not significantly related to the dose of ODB used to induce oestrus or the order that the ewes had been detected in oestrus. It was necessary for ewes to be in oestrus to get maximum discrimination and sexual response from the rams. Most of the components of the sexual ?attractiveness? of ewes appear to be associated with oestrus, and it seems that these factors are stable between and within oestrous periods. MenosAbstract: The influence on sexual ?attractiveness? of ewes of the stage of oestrus of the ewes, the dose of oestradiol benzoate (ODB) used to induce oestrus, the oestrous state of the ewes and the order that the ewes had been detected in oestrus were considered in 4 experiments. In the first experiment, 12 rams were individually presented with 4 oestrous ewes that were in proportionately different stages of oestrus, and the amount of mating and courtship directed from the rams to the ewes in 3 h was recorded. For Experiment 2, two groups of ovariectomised ewes of known sexual ?attractiveness? were placed in each group. After a period of progesterone priming, oestrus was induced in 3 of the ewes in each group with an injection of 50 ?g ODB, while the other 3 ewes in each group received an injection of 150 ?g ODB. Ten rams then ranked the ewes in each group for ?attractiveness?. In Experiment 3, an attempt was made to get the 10 rams to rank the ewes from Experiment 2 for sexual ?attractiveness? when the ewes were not in oestrus. In Part 1 of Experiment 4, a ram was placed with 6 ovariectomised ewes that had been prepared to come into oestrus and the animals were observed continuously. When a ewe permitted mounting, she was considered to be in oestrus and was removed from the pen. In this way the order that the ewes were detected in oestrus was established and the ram was then permitted to rank this group of oestrous ewes for ?attractiveness?. Ten rams were used, each with a d... Mostrar Tudo |
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Palavras-Chave: |
Comportamento reprodutivo; Dosage effects; Estro; Oestradiol benzoate; Oestrous cycle. |
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Thesagro: |
Carneiro; Ciclo Estral; Comportamento Sexual; Ovelha; Ovino; Reprodução; Sincronização do Cio. |
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Thesaurus Nal: |
Estrous cycle; Ewes; Rams; Reproduction; Sexual behavior; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03261naa a2200349 a 4500
001 1521907
005 2023-12-07
008 1987 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0168-1591(87)90014-1$2DOI
100 1 $aTILBROOK, A. J.
245 $aThe influence of factors associated with oestrus on the sexual 'attractiveness' of ewes to rams.$h[electronic resource]
260 $c1987
520 $aAbstract: The influence on sexual ?attractiveness? of ewes of the stage of oestrus of the ewes, the dose of oestradiol benzoate (ODB) used to induce oestrus, the oestrous state of the ewes and the order that the ewes had been detected in oestrus were considered in 4 experiments. In the first experiment, 12 rams were individually presented with 4 oestrous ewes that were in proportionately different stages of oestrus, and the amount of mating and courtship directed from the rams to the ewes in 3 h was recorded. For Experiment 2, two groups of ovariectomised ewes of known sexual ?attractiveness? were placed in each group. After a period of progesterone priming, oestrus was induced in 3 of the ewes in each group with an injection of 50 ?g ODB, while the other 3 ewes in each group received an injection of 150 ?g ODB. Ten rams then ranked the ewes in each group for ?attractiveness?. In Experiment 3, an attempt was made to get the 10 rams to rank the ewes from Experiment 2 for sexual ?attractiveness? when the ewes were not in oestrus. In Part 1 of Experiment 4, a ram was placed with 6 ovariectomised ewes that had been prepared to come into oestrus and the animals were observed continuously. When a ewe permitted mounting, she was considered to be in oestrus and was removed from the pen. In this way the order that the ewes were detected in oestrus was established and the ram was then permitted to rank this group of oestrous ewes for ?attractiveness?. Ten rams were used, each with a different group of ewes. Vasectomized rams were used in Part 2 of this experiment to detect the order that a group of 6 ewes came into oestrus, and then the 10 rams ranked these ewes for ?attractiveness?. Stage of oestrus had no significant influence on the amount of sexual behaviour directed from the rams to the ewes, and sexual ?attractiveness? was not significantly related to the dose of ODB used to induce oestrus or the order that the ewes had been detected in oestrus. It was necessary for ewes to be in oestrus to get maximum discrimination and sexual response from the rams. Most of the components of the sexual ?attractiveness? of ewes appear to be associated with oestrus, and it seems that these factors are stable between and within oestrous periods.
650 $aEstrous cycle
650 $aEwes
650 $aRams
650 $aReproduction
650 $aSexual behavior
650 $aSheep
650 $aCarneiro
650 $aCiclo Estral
650 $aComportamento Sexual
650 $aOvelha
650 $aOvino
650 $aReprodução
650 $aSincronização do Cio
653 $aComportamento reprodutivo
653 $aDosage effects
653 $aEstro
653 $aOestradiol benzoate
653 $aOestrous cycle
773 $tApplied Animal Behaviour Science$gv. 17, n. 1/2, p. 117-128, 1987.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
25/11/2002 |
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Data da última atualização: |
25/11/2002 |
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Autoria: |
MACHADO, S. S.; PAIVA, A. L. O.; HABERT, A. C.; GARCIA, M. E. F.; CABRAL, L.; NOBREGA, E. R. |
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Título: |
Estudo da permeacao atraves de membranas de silicone e silicone modificado utilizadas em proteses mamarias. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: JORNADA INTERNA DE INICIACAO CIENTIFICA, 17., 1995, Rio de Janeiro, RJ. Resumos... Rio de Janeiro: UFRJ/CT, 1995. Nao paginado. |
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Idioma: |
Português |
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Palavras-Chave: |
Membranas. |
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Thesagro: |
Engenharia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00652naa a2200193 a 4500
001 1414593
005 2002-11-25
008 1995 bl --- 0-- u #d
100 1 $aMACHADO, S. S.
245 $aEstudo da permeacao atraves de membranas de silicone e silicone modificado utilizadas em proteses mamarias.
260 $c1995
650 $aEngenharia
653 $aMembranas
700 1 $aPAIVA, A. L. O.
700 1 $aHABERT, A. C.
700 1 $aGARCIA, M. E. F.
700 1 $aCABRAL, L.
700 1 $aNOBREGA, E. R.
773 $tIn: JORNADA INTERNA DE INICIACAO CIENTIFICA, 17., 1995, Rio de Janeiro, RJ. Resumos... Rio de Janeiro: UFRJ/CT, 1995. Nao paginado.
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