Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
01/08/1992 |
Data da última atualização: |
17/05/2023 |
Autoria: |
RODRÍGUEZ IGLESIAS, R. M.; CICCIOLI, N. H.; IRAZOQUI, H.; RODRIGUEZ, B. T. |
Afiliação: |
R. M. RODRÍGUEZ IGLESIAS. |
Título: |
Importance of behavioural stimuli in raminduced ovulation in seasonally anovular corriedale ewes. |
Ano de publicação: |
1991 |
Fonte/Imprenta: |
Applied Animal Behaviour Science, v. 30, n. 3/4, p. 323-332, 1991. |
DOI: |
https://doi.org/10.1016/0168-1591(91)90137-M |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Three groups of about 65 seasonally anovular Corriedale ewes were penned and exposed to rams on November 4, 1989. A fourth group (n=64) was maintained in a 3-ha paddock and also exposed to rams on the same date. The sexual behaviour exhibited by rams in contact with penned ewes was recorded during nine simultaneous observation sessions lasting 2 h each. Five days after ram introduction, incidence of ovulation and ovulation rate were higher (P < 0.01) in adult than in 1.5-year-old ewes. Among penned adult ewes, a greater (P < 0.05) incidence of ovulation was recorded in ewes maintained in contact with rams and oestrous ewes (95.8%) than in ewes exposed to either rams with or without recent experience with oestrous ewes (68.7 and 57.1%, respectively). The fourth group, exposed to rams in field conditions, exhibited a lower (P < 0.05) incidence of ovulation (31.9%) than any other group. No differences among treatments were detected in 1.5-year-old ewes. The incidence of ovulation was associated (r=0.99, P<0.05) with the sexual behaviour displayed by the rams. It was concluded that the sexual behaviour of the rams plays an important role in ram-induced ovulation and that the continuous presence of oestrous ewes is necessary for the maximum efficacy of the technique in Corriedale ewes. |
Palavras-Chave: |
Anestro; Efeito macho; Induced ovulation. |
Thesagro: |
Ovino; Reprodução. |
Thesaurus Nal: |
Ewes; Reproduction; Sexual behavior; Sheep. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02144naa a2200277 a 4500 001 1520273 005 2023-05-17 008 1991 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/0168-1591(91)90137-M$2DOI 100 1 $aRODRÍGUEZ IGLESIAS, R. M. 245 $aImportance of behavioural stimuli in raminduced ovulation in seasonally anovular corriedale ewes.$h[electronic resource] 260 $c1991 520 $aAbstract: Three groups of about 65 seasonally anovular Corriedale ewes were penned and exposed to rams on November 4, 1989. A fourth group (n=64) was maintained in a 3-ha paddock and also exposed to rams on the same date. The sexual behaviour exhibited by rams in contact with penned ewes was recorded during nine simultaneous observation sessions lasting 2 h each. Five days after ram introduction, incidence of ovulation and ovulation rate were higher (P < 0.01) in adult than in 1.5-year-old ewes. Among penned adult ewes, a greater (P < 0.05) incidence of ovulation was recorded in ewes maintained in contact with rams and oestrous ewes (95.8%) than in ewes exposed to either rams with or without recent experience with oestrous ewes (68.7 and 57.1%, respectively). The fourth group, exposed to rams in field conditions, exhibited a lower (P < 0.05) incidence of ovulation (31.9%) than any other group. No differences among treatments were detected in 1.5-year-old ewes. The incidence of ovulation was associated (r=0.99, P<0.05) with the sexual behaviour displayed by the rams. It was concluded that the sexual behaviour of the rams plays an important role in ram-induced ovulation and that the continuous presence of oestrous ewes is necessary for the maximum efficacy of the technique in Corriedale ewes. 650 $aEwes 650 $aReproduction 650 $aSexual behavior 650 $aSheep 650 $aOvino 650 $aReprodução 653 $aAnestro 653 $aEfeito macho 653 $aInduced ovulation 700 1 $aCICCIOLI, N. H. 700 1 $aIRAZOQUI, H. 700 1 $aRODRIGUEZ, B. T. 773 $tApplied Animal Behaviour Science$gv. 30, n. 3/4, p. 323-332, 1991.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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