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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:  Mostrar Marc Completo
Registro original:  Embrapa Caprinos e Ovinos (CNPC)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPC6398 - 1ADDAP - DD
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