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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
27/08/1999 |
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Data da última atualização: |
27/08/1999 |
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Autoria: |
BADINGA, L.; COLLIER, R. J.; THATCHER, W. W.; WILCOX, C. J. |
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Afiliação: |
University of Florida. |
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Título: |
Effects of climatic and management factors on conception rate of dairy cattle in subtropical environment. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Journal of Dairy Science, v.68, p.78-85, 1985. |
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Volume: |
v.68 |
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Páginas: |
p.78-85 |
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Idioma: |
Inglês |
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Conteúdo: |
Breeding records, representing 12,038 inseminations at Bassett's Dairy Farm (Monticello, FL), were analyzed to document effects of environnmental and management factors on fertility of dairy cattle from January 1, 1975 to December 31, 1977. Conception rates of lactating cows decreased sharply when maximum air temperature on day after insemination exceeded 30 graus C. In contrast, conception rates for heifers did not decline until 35 graus C. Virgin heifers had higher conception rates for all services (50%) than lactating cows (34%) and suffered only slight depression on fertility during summer months. Heifers required 1.5 services per conception compared with 2.3 for lactating cows. Relationship between conception rate and rainfall on day after insemination was negative and curvilinear. Jerseys had higher conception rates (45%) than Holstein (39%) and Brown Swiss (41%). Services per conception were 1.7, 2.0, and 1.9. Substantial decreases of fertility were associated with advancing service number. Estrous status (standing; positive heat detection patch; mounting activity), inseminator, and year of service were related to variation of conception rate. Seasonal effects on fertility of lactating cows were marked. Thus, environmental management of the postpartum cow during hot summer months is warranted to maximize fertility. |
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Palavras-Chave: |
Gado de leite. |
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Thesagro: |
Bioclimatologia; Reprodução. |
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Thesaurus Nal: |
bioclimatology; dairy cattle; reproduction. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02039naa a2200253 a 4500
001 1079939
005 1999-08-27
008 1985 bl --- 0-- u #d
100 1 $aBADINGA, L.
245 $aEffects of climatic and management factors on conception rate of dairy cattle in subtropical environment.
260 $c1985
300 $ap.78-85 v.68
490 $vv.68
520 $aBreeding records, representing 12,038 inseminations at Bassett's Dairy Farm (Monticello, FL), were analyzed to document effects of environnmental and management factors on fertility of dairy cattle from January 1, 1975 to December 31, 1977. Conception rates of lactating cows decreased sharply when maximum air temperature on day after insemination exceeded 30 graus C. In contrast, conception rates for heifers did not decline until 35 graus C. Virgin heifers had higher conception rates for all services (50%) than lactating cows (34%) and suffered only slight depression on fertility during summer months. Heifers required 1.5 services per conception compared with 2.3 for lactating cows. Relationship between conception rate and rainfall on day after insemination was negative and curvilinear. Jerseys had higher conception rates (45%) than Holstein (39%) and Brown Swiss (41%). Services per conception were 1.7, 2.0, and 1.9. Substantial decreases of fertility were associated with advancing service number. Estrous status (standing; positive heat detection patch; mounting activity), inseminator, and year of service were related to variation of conception rate. Seasonal effects on fertility of lactating cows were marked. Thus, environmental management of the postpartum cow during hot summer months is warranted to maximize fertility.
650 $abioclimatology
650 $adairy cattle
650 $areproduction
650 $aBioclimatologia
650 $aReprodução
653 $aGado de leite
700 1 $aCOLLIER, R. J.
700 1 $aTHATCHER, W. W.
700 1 $aWILCOX, C. J.
773 $tJournal of Dairy Science$gv.68, p.78-85, 1985.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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| Registros recuperados : 7 | |
| 2. |  | OLIVEIRA, M. M.; CASTRO NETO, M. T. de; LEDO, C. A. da S.; SARMENTO, C. A. R.; LESSA, L. S. Relação entre medidas de crescimento na bananeira cv. 'Prata Anã', como ferramenta para seu melhoramento genético. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 4., 2007, São Lourenço. São Lourenço:[s.n.], 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 3. | | SARMENTO, C. A. R.; LEDO, C. A. da S.; SILVA, S. de O. e; OLIVEIRA, M. M. de; MENDES, E. da S.; OLIVEIRA, M. L. A. Avaliação da germinação de sementes de diplóides (AA) melhorados de bananeira. In: SIMPÓSIO BAIANO DE EDUCAÇÃO AMBIENTAL, 1., 2007, Cruz das Almas. Reciclando conceitos para desenvolver ações educativas com princípios ambientalistas. Cruz das Almas: [s.n.], [2007?]. Mariana Lays Andrade Oliveira, UFRB.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 4. | | TAVARES FILHO, L. F. de Q.; ALVES, A. A. C.; LEDO, C. A. da S.; SARMENTO, C. A. R.; SANTO, A. S. Compatibilidade de cruzamentos interespecíficos entre mandioca e espécies silvestres de Manihot. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 426.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 6. | | TAVARES FILHO, L. F. de Q.; ALVES, A. A. C.; LEDO, C. A. da S.; SARMENTO, C. A. R.; SANTO, A. S. Metodologia para hibridação interespecífica entre mandioca e espécies silvestres de Manihot. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 449.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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