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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
03/02/2011 |
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Data da última atualização: |
24/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEIXOTO, M. G. C. D.; POGGIAN, C. F.; VERNEQUE, R. da S.; EGITO, A. A. do; CARVALHO, M. R. S.; PENNA, V. M.; BERGMANN, J. A. G.; VICCINI, L. F.; MACHADO, M. A. |
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Afiliação: |
MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; CECÍLIA FONSECA POGGIAN, UFJF; RUI DA SILVA VERNEQUE, CNPGL; ANDREA ALVES DO EGITO, CNPGC; MARIA RAQUEL SANTOS CARVALHO, UFMG; VÂNIA MALDINI PENNA, CBMG; JOSÉ AURÉLIO GARCIA BERGMANN, UFMG; LYDERSON FACIO VICCINI, UFJF; MARCO ANTONIO MACHADO, CNPGL. |
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Título: |
Genetic basis and inbreeding in the Brazilian Guzerat (Bos indicus) subpopulation selected for milk production. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Livestock Science, v. 131, n. 2/3, p. 168-174, 2010. |
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DOI: |
https://doi.org/10.1016/j.livsci.2010.03.015 |
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Idioma: |
Inglês |
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Conteúdo: |
The Guzerat breed is well adapted to the tropical conditions of Brazil. After 1940, the widespread use of Guzerat cattle for crossing has reduced its population size. In 1994, a selection program for milk production traits was initiated in some purebred herds. However, its success is compromised by genetic drift and an increased inbreeding coefficient (F). The objective of this study was to evaluate the genetic status of the Guzerat population under selection for milk production in order to monitor genetic variability. Genealogical data from 10,051 animals were used to estimate genetic parameters. The average F for all animals and for inbred animals in the pedigree was 0.009 and 0.025, respectively. Average relatedness was 0.011. The average generation interval was 7.48 years and the linear increase in F per generation was 0.0051. There was no trend of changes in the effective population size along generations, with the observation of an effective size of 98 in the last generation evaluated. The effective number of founders and ancestors was 318 and 101, respectively. Only 47 of 2106 ancestors contributed to 50% of the reference population. The bottleneck effect was 3.15. Average F and relatedness values are still low despite non-random mating. However, the reduced effective population size and effective number of ancestors indicate a risk of an increase in the inbreeding coefficient and genetic drift and consequent loss of variability. |
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Palavras-Chave: |
Effective population size; Genetic variability; Zebu cattle. |
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Thesaurus Nal: |
inbreeding coefficient. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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Marc: |
LEADER 02347naa a2200277 a 4500
001 1881310
005 2023-03-24
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.livsci.2010.03.015$2DOI
100 1 $aPEIXOTO, M. G. C. D.
245 $aGenetic basis and inbreeding in the Brazilian Guzerat (Bos indicus) subpopulation selected for milk production.$h[electronic resource]
260 $c2010
520 $aThe Guzerat breed is well adapted to the tropical conditions of Brazil. After 1940, the widespread use of Guzerat cattle for crossing has reduced its population size. In 1994, a selection program for milk production traits was initiated in some purebred herds. However, its success is compromised by genetic drift and an increased inbreeding coefficient (F). The objective of this study was to evaluate the genetic status of the Guzerat population under selection for milk production in order to monitor genetic variability. Genealogical data from 10,051 animals were used to estimate genetic parameters. The average F for all animals and for inbred animals in the pedigree was 0.009 and 0.025, respectively. Average relatedness was 0.011. The average generation interval was 7.48 years and the linear increase in F per generation was 0.0051. There was no trend of changes in the effective population size along generations, with the observation of an effective size of 98 in the last generation evaluated. The effective number of founders and ancestors was 318 and 101, respectively. Only 47 of 2106 ancestors contributed to 50% of the reference population. The bottleneck effect was 3.15. Average F and relatedness values are still low despite non-random mating. However, the reduced effective population size and effective number of ancestors indicate a risk of an increase in the inbreeding coefficient and genetic drift and consequent loss of variability.
650 $ainbreeding coefficient
653 $aEffective population size
653 $aGenetic variability
653 $aZebu cattle
700 1 $aPOGGIAN, C. F.
700 1 $aVERNEQUE, R. da S.
700 1 $aEGITO, A. A. do
700 1 $aCARVALHO, M. R. S.
700 1 $aPENNA, V. M.
700 1 $aBERGMANN, J. A. G.
700 1 $aVICCINI, L. F.
700 1 $aMACHADO, M. A.
773 $tLivestock Science$gv. 131, n. 2/3, p. 168-174, 2010.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 8 | |
| 3. |  | POGGIAN, C. F.; VERNEQUE, R. da S.; VICCINI, L. F.; TEODORO, R. L.; FREITAS, L. S.; CARVALHO, M. R. S.; PEIXOTO, M. G. C. D. Endogamia na raça Guzerá (Bos indicus) para produção de leite. In: CONGRESSO BRASILEIRO DE GENÉTICA, 53., 2007, Águas de Lindóia. Resumos... Ribeirão Preto: SBG, 2007. p. 321.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 4. | | TEODORO, R. L.; POGGIAN, C. F.; VERNEQUE, R. da S.; PENNA, V. M.; MACHADO, M. A.; PIRES, M. de F. A.; PEIXOTO, M. G. C. D. Estrutura genética da raça Guzerá (Bos indicus ) selecionada para leite no Brasil. In: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20., REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30., CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Anais... Cuzco: ALPA/APPA, 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | TEODORO, R. L.; POGGIAN, C. F.; VERNEQUE, R. da S.; PENNA, V. M.; MACHADO, M. A.; PIRES, M. de F. A.; PEIXOTO, M. G. C. D. Estrutura genética da raça Guzerá (Bos indicus ) selecionada para leite no Brasil. In: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20.; REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30.; CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Resumenes... Cuzco: ALPA/APPA, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 6. | | FREITAS, L. S.; VERNEQUE, R. da S.; SILVA, M. A.; TEODORO, R. L.; POGGIAN, C. F.; VALENTE, B. D.; CORRÊA, G. S.; PEIXOTO, M. G. C. D. Persistência na lactação de vacas da raça Guzerá, usando produção no dia do controle e modelo de regressão aleatória. In: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20., REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30., CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Anais... Cuzco: ALPA/APPA, 2007. 1 CD.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 7. | | FREITAS, L. S.; VERNEQUE, R. da S.; SILVA, M. A.; TEODORO, R. L.; POGGIAN, C. F.; VALENTE, B. D.; CORRÊA, G. S.; PEIXOTO, M. G. C. D. Persistência na lactação de vacas da raça Guzerá, usando produção no dia do controle e modelo de regressão aleatória. In: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20.; REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30.; CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Resumenes... Cuzco: ALPA/APPA, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | PEIXOTO, M. G. C. D.; POGGIAN, C. F.; VERNEQUE, R. da S.; EGITO, A. A. do; CARVALHO, M. R. S.; PENNA, V. M.; BERGMANN, J. A. G.; VICCINI, L. F.; MACHADO, M. A. Genetic basis and inbreeding in the Brazilian Guzerat (Bos indicus) subpopulation selected for milk production. Livestock Science, v. 131, n. 2/3, p. 168-174, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 8 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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