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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: |
12/05/2023 |
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Autoria: |
GREYLING, J. P. C.; VAN NIEKERK, C. H. |
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Título: |
Occurrence of oestrus in the Boer goat Doe. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
South African Journal of Animal Science, v. 17, n. 3, p. 147-149, 1987. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Scrotal circumference in young beef bulls: Relationships to growth traits The natural occurrence of oestrus in Boer goat does was recorded for the period 1980 - 1982. Although periods of complete anoestrus were never observed, it would appear that the doe is seasonally polyestrous, with an extended breeding season. The pattern of the seasonal occurrence of sexual activity in the Boer goat doe exhibited a peak in activity during April and May (autumn) and low activity from October through to January (late spring to mid-summer). Regarding sexual activity and daylight length, a significant (P<0,05) negative correlation (r = --0,654) was recorded in adult female goats. No significant correlation (r = --0,503) was recorded between ambient temperature and seasonal sexual activity, although there was a trend that higher sexual activity occurred during the cooler months. Body mass (mean 67,2 kg) in the adult female goat was not significantly correlated (r = 0,358) to sexual activity. The mean number of oestrus periods per doe per year was 11,7 ± 4,4 for Boer goat does not being mated that year. Natural breeding programmes during the year with Boer goat does must be executed taking into account this seasonal sexual activity. |
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Palavras-Chave: |
Oestrous cycle. |
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Thesagro: |
Caprino; Ciclo Estral; Reprodução. |
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Thesaurus Nal: |
Boer (goat breed); Estrous cycle; Goats; Reproduction; Reproductive performance; Seasons. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01942naa a2200253 a 4500
001 1522895
005 2023-05-12
008 1987 bl uuuu u00u1 u #d
100 1 $aGREYLING, J. P. C.
245 $aOccurrence of oestrus in the Boer goat Doe.$h[electronic resource]
260 $c1987
520 $aAbstract: Scrotal circumference in young beef bulls: Relationships to growth traits The natural occurrence of oestrus in Boer goat does was recorded for the period 1980 - 1982. Although periods of complete anoestrus were never observed, it would appear that the doe is seasonally polyestrous, with an extended breeding season. The pattern of the seasonal occurrence of sexual activity in the Boer goat doe exhibited a peak in activity during April and May (autumn) and low activity from October through to January (late spring to mid-summer). Regarding sexual activity and daylight length, a significant (P<0,05) negative correlation (r = --0,654) was recorded in adult female goats. No significant correlation (r = --0,503) was recorded between ambient temperature and seasonal sexual activity, although there was a trend that higher sexual activity occurred during the cooler months. Body mass (mean 67,2 kg) in the adult female goat was not significantly correlated (r = 0,358) to sexual activity. The mean number of oestrus periods per doe per year was 11,7 ± 4,4 for Boer goat does not being mated that year. Natural breeding programmes during the year with Boer goat does must be executed taking into account this seasonal sexual activity.
650 $aBoer (goat breed)
650 $aEstrous cycle
650 $aGoats
650 $aReproduction
650 $aReproductive performance
650 $aSeasons
650 $aCaprino
650 $aCiclo Estral
650 $aReprodução
653 $aOestrous cycle
700 1 $aVAN NIEKERK, C. H.
773 $tSouth African Journal of Animal Science$gv. 17, n. 3, p. 147-149, 1987.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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