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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: |
30/03/2023 |
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Autoria: |
WESTHUYSEN, J. M. van der; NIEKERK, C. H. van. |
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Afiliação: |
Department of Animal Physiologlt, University of Stellenbosch. |
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Título: |
Synchronisation of oestrus in sheep early in the breeding season: the vaginal environment and fertility. |
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Ano de publicação: |
1971 |
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Fonte/Imprenta: |
South African Society for Animal Science, v. 1, n. 1, p. 59-62, 1971. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Two hundred and eight Dormer ewes were included in an investigation into the effect on ewe fertility of dihydrostreptomycin antibiotic pessaries used with fluorogestone acetate-impregnated intravaginal (FGA) sponges for the synchronisation of oestrus and ovulation early in the breeding season. In addition, the vaginal environment and flora were investigated. Although synchronisation was good, only 70% of the ewes exhibited oestrus and of these 42% failed to conceive. Maiden ewes had a lower oestrous response (50% cf. 81%), but conceived as well as mature ewes. Although the use of antibiotic pessaries did not improve oestrous response or conception rate, as a result of a higher twinning rate following this treatment, more lambs were born per ewe lambing (1,41 cf. 1,26; P<0,05). It is suggested that the antibiotic pessaries were beneficial to sperm survival in the genetal tract of the ewe. |
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Palavras-Chave: |
Estro; Induced ovulation. |
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Thesagro: |
Animal; Ciclo Estral; Fisiologia; Reprodução; Sincronização do Cio. |
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Thesaurus Nal: |
Animal fertility; Estrus synchronization; Ewes; Female fertility; Lambs; Reproduction; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01781naa a2200301 a 4500
001 1523239
005 2023-03-30
008 1971 bl uuuu u00u1 u #d
100 1 $aWESTHUYSEN, J. M. van der
245 $aSynchronisation of oestrus in sheep early in the breeding season$bthe vaginal environment and fertility.$h[electronic resource]
260 $c1971
520 $aAbstract: Two hundred and eight Dormer ewes were included in an investigation into the effect on ewe fertility of dihydrostreptomycin antibiotic pessaries used with fluorogestone acetate-impregnated intravaginal (FGA) sponges for the synchronisation of oestrus and ovulation early in the breeding season. In addition, the vaginal environment and flora were investigated. Although synchronisation was good, only 70% of the ewes exhibited oestrus and of these 42% failed to conceive. Maiden ewes had a lower oestrous response (50% cf. 81%), but conceived as well as mature ewes. Although the use of antibiotic pessaries did not improve oestrous response or conception rate, as a result of a higher twinning rate following this treatment, more lambs were born per ewe lambing (1,41 cf. 1,26; P<0,05). It is suggested that the antibiotic pessaries were beneficial to sperm survival in the genetal tract of the ewe.
650 $aAnimal fertility
650 $aEstrus synchronization
650 $aEwes
650 $aFemale fertility
650 $aLambs
650 $aReproduction
650 $aSheep
650 $aAnimal
650 $aCiclo Estral
650 $aFisiologia
650 $aReprodução
650 $aSincronização do Cio
653 $aEstro
653 $aInduced ovulation
700 1 $aNIEKERK, C. H. van
773 $tSouth African Society for Animal Science$gv. 1, n. 1, p. 59-62, 1971.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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