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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/10/2003 |
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Data da última atualização: |
06/07/2016 |
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Autoria: |
SCHWALBACH, L. M. J.; FOURIE, P. J.; NESER, F. W. C.; VAN DER WESTHUIZEN, C.; GREYLING, J. P. C. |
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Título: |
Effect of high energy diets on the reproductive performance of Dorper rams. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 2.; SIMPÓSIO INTERNACIONAL SOBRE AGRONEGÓCIO DA CAPRINOCULTURA LEITEIRA, 1., 2003, João Pessoa. Anais... João Pessoa: EMEPA-PB, 2003. p. 361-366. |
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Idioma: |
Inglês |
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Conteúdo: |
The effect of two feeding regimes on the testicular, scrotal and semen characteristics of 32 rams was investigated. Thirty-two Dorper rams that participated in the Northern Cape veld-ram project were used in this study. The first group of Dorper rams (n = 16), (469.4 :t 30.5 days of age) were fed ad lib intensively on a high-energy (9.5 MJ ME/kg DM, 12.5% CP, 15% fibre and 2.5% fat; mean intake 2.32kg/ram/day) diet for 7 weeks, while the second group of rams (n = 16), (460.6 :t 34.1 days of age) were managed on natural pastures (veld) plus supplementation and received 100g/ram/dayof a maintenance lick containing 16% CP, 8 MJ ME/kg DM and 10% fibre for the same period. At the end of the 49-day trial period, semen was collected by electro-ejaculation and all rams were slaughtered. The semen, scrotal and testicular characteristics were compared between the groups. Nutrition had an influence on scrotal circumference, scrotal fat, scrotal weight, testes weight and volume. There were marked differences between the groups in favor of the extensively managed (EM) group for most semen characteristics. The evidence suggests that intensive feeding of young rams could impair their spermatogenesis. |
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Palavras-Chave: |
Característica; Raça Dorper. |
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Thesagro: |
Dieta; Eficiência Reprodutiva; Nutrição Animal; Ovino; Performance; Sêmen. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02087naa a2200265 a 4500
001 1529920
005 2016-07-06
008 2003 bl uuuu u00u1 u #d
100 1 $aSCHWALBACH, L. M. J.
245 $aEffect of high energy diets on the reproductive performance of Dorper rams.
260 $c2003
520 $aThe effect of two feeding regimes on the testicular, scrotal and semen characteristics of 32 rams was investigated. Thirty-two Dorper rams that participated in the Northern Cape veld-ram project were used in this study. The first group of Dorper rams (n = 16), (469.4 :t 30.5 days of age) were fed ad lib intensively on a high-energy (9.5 MJ ME/kg DM, 12.5% CP, 15% fibre and 2.5% fat; mean intake 2.32kg/ram/day) diet for 7 weeks, while the second group of rams (n = 16), (460.6 :t 34.1 days of age) were managed on natural pastures (veld) plus supplementation and received 100g/ram/dayof a maintenance lick containing 16% CP, 8 MJ ME/kg DM and 10% fibre for the same period. At the end of the 49-day trial period, semen was collected by electro-ejaculation and all rams were slaughtered. The semen, scrotal and testicular characteristics were compared between the groups. Nutrition had an influence on scrotal circumference, scrotal fat, scrotal weight, testes weight and volume. There were marked differences between the groups in favor of the extensively managed (EM) group for most semen characteristics. The evidence suggests that intensive feeding of young rams could impair their spermatogenesis.
650 $aDieta
650 $aEficiência Reprodutiva
650 $aNutrição Animal
650 $aOvino
650 $aPerformance
650 $aSêmen
653 $aCaracterística
653 $aRaça Dorper
700 1 $aFOURIE, P. J.
700 1 $aNESER, F. W. C.
700 1 $aVAN DER WESTHUIZEN, C.
700 1 $aGREYLING, J. P. C.
773 $tIn: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 2.; SIMPÓSIO INTERNACIONAL SOBRE AGRONEGÓCIO DA CAPRINOCULTURA LEITEIRA, 1., 2003, João Pessoa. Anais... João Pessoa: EMEPA-PB, 2003. p. 361-366.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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