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Registros recuperados : 39 | |
2. | | SANTANA JÚNIOR, M. L.; ELER, J. P.; CARDOSO, F. F.; FERRAS, J. B. S. Interação genótipo x ambiente para ganho de peso pós-desmama de bovinos de corte compostos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 48., 2011, Belém, PA. O desenvolvimento da produção animal e a responsabilidade frente a novos desafios: anais. Belém, PA: SBZ, 2011. 1 CD-ROM. Biblioteca(s): Embrapa Pecuária Sul. |
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5. | | SANTANA JUNIOR, M. L.; ELER, J. P.; CARDOSO, F. F.; ALBUQUERQUE, L. G.; BIGNARDI, A. B.; FERRAZ, J. B. S. Genotype by environment interaction for birth and weaning weights of composite beef cattle in different regions of Brazil Livestock Production Science, Amsterdam, v. 149, n. 3, p. 242-249, Nov. 2012. Biblioteca(s): Embrapa Pecuária Sul. |
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6. | | SANTANA JUNIOR, M. L.; BIGNARDI, A. B.; ELER, J. P.; CARDOSO, F. F.; FERRAZ, J. B. S. Genotype by environment interaction and model comparison for growth traits of Santa Ines sheep. Journal of Animal Breeding and Genetics, Berlin, DE, v. 130, n. 5, p. 394-403, Oct. 2013. Publicado online em 24 jan. 2013. Biblioteca(s): Embrapa Pecuária Sul. |
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7. | | SANTANA JÚNIOR, M. L.; PEDROSA, V. B.; GROENEVELD, E.; FERRAZ, J. B. S.; CARDOSO, F. F.; ELER, J. P. Genotype x environment interaction for growth and reproduction traits of composite beef cattle in Brazil. In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 9., 2010, Leipzig. Proceedings... Leipzig: German Society of Animal Science, 2010. 1 CD-ROM. Biblioteca(s): Embrapa Pecuária Sul. |
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8. | | PEREIRA, R. J.; SANTANA JÚNIOR, M. L.; AYRES, D. R.; BIGNARDI, A. B.; VERCESI FILHO, A. E. Depressão endogâmica na produção de leite no dia do controle de bovinos Gir leiteiro. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 6, p. 751-758, jun. 2016. Título em inglês: Inbreeding depression in test?day milk yield of Gyr dairy cattle. Biblioteca(s): Embrapa Unidades Centrais. |
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9. | | VERNEQUE, R. S.; PEREIRA, R. J.; SANTANA JUNIOR, M. L.; TEODORO, R. L.; PEIXOTO, M. G. C. D. Oscilações nos valores genéticos de touros Gir Leiteiro em valiações genéticas sucessivas. 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. Biblioteca(s): Embrapa Gado de Leite. |
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10. | | VERNEQUE, R. S.; PEREIRA, R. J.; SANTANA JUNIOR, M. L.; TEODORO, R. L.; PEIXOTO, M. G. C. D. Oscilações nos valores genéticos de touros Gir Leiteiro em valiações genéticas sucessivas. 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. Biblioteca(s): Embrapa Gado de Leite. |
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11. | | SANTANA JUNIOR, M. L.; ELER, J. P.; BIGNARDI, A. B.; MENÉNDEZ-BUXADERA, A.; CARDOSO, F. F.; FERRAZ, J. B. S. Multi-trait linear reaction norm model to describe the pattern of phenotypic expression of some economic traits in beef cattle across a range of environments. Journal of Applied Genetics, v. 56, n. 2, p. 219-229, May 2015. Biblioteca(s): Embrapa Pecuária Sul. |
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12. | | SANTANA JÚNIOR, M. L.; ELER, J. P.; CARDOSO, F. F.; ALBUQUERQUE, L. G.; FERRAZ, J. B. S. Phenotypic plasticity of composite beef cattle performance using reaction norms model with unknown covariate. Animal, Cambridge, v. 7, n. 2, p. 202-210, Feb. 2013. Firstview article 27 set. 2012. Biblioteca(s): Embrapa Pecuária Sul. |
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13. | | PEDROSA, V. B.; SANTANA JUNIOR, M. L.; OLIVEIRA, P. S.; ELER, J. P.; FERRAZ, J. B. S. Population structure and inbreeding effects on growth traits of Santa Ines sheep in Brazil. Small Ruminant Research, Amsterdam, v. 93, n. 2/3, p. 135-139, Oct. 2010. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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14. | | PEREIRA, R. J.; LOPES, P. S.; VERNEQUE, R. da S.; SANTANA JUNIOR, M. L.; LAGROTTA, M. R.; TORRES, R. de A. Funções de covariância para produção de leite no dia do controle em bovinos Gir Leiteiro. Pesquisa Agropecuária Brasileira, v. 45, n. 11, p. 1303-1311, 2010. Biblioteca(s): Embrapa Gado de Leite; Embrapa Unidades Centrais. |
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15. | | OLIVEIRA, P. S.; SANTANA JÚNIOR, M. L.; PEDROSA, V. B.; OLIVEIRA, E. C. de M.; ELER, J. P.; FERRAZ, J. B. S. Estrutura populacional de rebanho fechado da raça Nelore da linhagem Lemgruber. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 46, n. 6, p. 639-647, jun. 2011 Título em inglês: Population structure of a closed herd of Nellore cattle of the Lemgruber line. Biblioteca(s): Embrapa Unidades Centrais. |
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16. | | OKAMURA, V.; MENEZES, G. R. de O.; SANTANA JÚNIOR, M. L.; PEREIRA, R. J.; SILVA, L. O. C. da; GONDO, A.; NOBRE, P. R. C. Estrutura da população Nelore In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. 2 p. (Embrapa Gado de Corte. Documentos, 198). Biblioteca(s): Embrapa Gado de Corte. |
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17. | | SANTANA JUNIOR, M. L.; ELER, J. P.; CARDOSO, F. F.; ALBUQUERQUE, L. G.; BALIEIRO, J. C. C.; PEREIRA, R. J.; FERRAZ, J. B. S. Genotype by environment interaction for post-weaning weight gain, scrotal circumference, and muscling score of composite beef cattle in different regions of Brazil. Genetics and Molecular Research, Ribeirão Preto, v. 13, n. 2, p. 3048-3059, 2014. Biblioteca(s): Embrapa Pecuária Sul. |
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18. | | PEREIRA, R. J.; SANTANA JUNIOR, M. L.; BIGNARDI, A. B.; VERNEQUE, R. da S.; EL FARO, L.; ALBUQUERQUE, L. G. de. Effect of pregnancy on the genetic evaluation of dairy cattle. Genetics and Molecular Research, v. 10, n. 3, p. 2190-2201, 2011. Biblioteca(s): Embrapa Gado de Leite. |
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19. | | SANTANA JUNIOR, M. L.; LOPES, P. S.; VERNEQUE, R. da S.; PEREIRA, R. J.; LAGROTTA, M. R.; PEIXOTO, M. G. C. D. Parâmetros genéticos de características reprodutivas de touros e vacas Gir leiteiro. Revista Brasileira de Zootecnia, v. 39, n. 8, p. 1717-1722, 2010. Biblioteca(s): Embrapa Gado de Leite. |
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20. | | PEREIRA, R. J.; VERNEQUE, R. da S.; LOPES, P. S.; SANTANA JUNIOR, M. L.; LAGROTTA, M. R.; TORRES, R. A.; VERCESI FILHO, A. E.; MACHADO, M. A. Milk yield persistency in brazilian gyr cattle based on a random regression model. Genetics and Molecular Research, v. 11, n. 2., p. 1599-1609, 2012. Biblioteca(s): Embrapa Gado de Leite. |
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Registros recuperados : 39 | |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
12/12/2012 |
Data da última atualização: |
09/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
PEREIRA, R. J.; VERNEQUE, R. da S.; LOPES, P. S.; SANTANA JUNIOR, M. L.; LAGROTTA, M. R.; TORRES, R. A.; VERCESI FILHO, A. E.; MACHADO, M. A. |
Afiliação: |
R. J. PEREIRA, UNESP; RUI DA SILVA VERNEQUE, CNPGL; P. S. LOPES, UFV; M. L. SANTANA JUNIOR, UFMT; M. R. LAGROTTA, UFV; R. A. TORRES, UFV; A. E. VERCESI FILHO, APTA; MARCO ANTONIO MACHADO, CNPGL. |
Título: |
Milk yield persistency in brazilian gyr cattle based on a random regression model. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Genetics and Molecular Research, v. 11, n. 2., p. 1599-1609, 2012. |
DOI: |
https://doi.org/10.4238/2012.june.15.9 |
Idioma: |
Inglês |
Conteúdo: |
With the objective of evaluating measures of milk yield persistency, 27,000 test-day milk yield records from 3362 first lactations of Brazilian Gyr cows that calved between 1990 and 2007 were analyzed with a random regression model. Random, additive genetic and permanent environmental effects were modeled using Legendre polynomials of order 4 and 5, respectively. Residual variance was modeled using five classes. The average lactation curve was modeled using a fourth-order Legendre polynomial. Heritability estimates for measures of persistency ranged from 0.10 to 0.25. Genetic correlations between measures of persistency and 305-day milk yield (Y305) ranged from -0.52 to 0.03. At high selection intensities for persistency measures and Y305, few animals were selected in common. As the selection intensity for the two traits decreased, a higher percentage of animals were selected in common. The average predicted breeding values for Y305 according to year of birth of the cows had a substantial annual genetic gain. In contrast, no improvement in the average persistency breeding value was observed. We conclude that selection for total milk yield during lactation does not identify bulls or cows that are genetically superior in terms of milk yield persistency. A measure of persistency represented by the sum of deviations of estimated breeding value for days 31 to 280 in relation to estimated breeding value for day 30 should be preferred in genetic evaluations of this trait in the Gyr breed, since this measure showed a medium heritability and a genetic correlation with 305-day milk yield close to zero. In addition, this measure is more adequate at the time of peak lactation, which occurs between days 25 and 30 after calving in this breed. MenosWith the objective of evaluating measures of milk yield persistency, 27,000 test-day milk yield records from 3362 first lactations of Brazilian Gyr cows that calved between 1990 and 2007 were analyzed with a random regression model. Random, additive genetic and permanent environmental effects were modeled using Legendre polynomials of order 4 and 5, respectively. Residual variance was modeled using five classes. The average lactation curve was modeled using a fourth-order Legendre polynomial. Heritability estimates for measures of persistency ranged from 0.10 to 0.25. Genetic correlations between measures of persistency and 305-day milk yield (Y305) ranged from -0.52 to 0.03. At high selection intensities for persistency measures and Y305, few animals were selected in common. As the selection intensity for the two traits decreased, a higher percentage of animals were selected in common. The average predicted breeding values for Y305 according to year of birth of the cows had a substantial annual genetic gain. In contrast, no improvement in the average persistency breeding value was observed. We conclude that selection for total milk yield during lactation does not identify bulls or cows that are genetically superior in terms of milk yield persistency. A measure of persistency represented by the sum of deviations of estimated breeding value for days 31 to 280 in relation to estimated breeding value for day 30 should be preferred in genetic evaluations of this trait in the Gyr... Mostrar Tudo |
Palavras-Chave: |
Função de covariância; Parametros genéticos; Produção de leite. |
Thesagro: |
Gado Leiteiro. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/942286/1/Milk-yield-persistency-in-brazilian-gyr-cattle-based-on-a-random-regression-model.pdf
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Marc: |
LEADER 02591naa a2200265 a 4500 001 1942286 005 2024-02-09 008 2012 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.4238/2012.june.15.9$2DOI 100 1 $aPEREIRA, R. J. 245 $aMilk yield persistency in brazilian gyr cattle based on a random regression model.$h[electronic resource] 260 $c2012 520 $aWith the objective of evaluating measures of milk yield persistency, 27,000 test-day milk yield records from 3362 first lactations of Brazilian Gyr cows that calved between 1990 and 2007 were analyzed with a random regression model. Random, additive genetic and permanent environmental effects were modeled using Legendre polynomials of order 4 and 5, respectively. Residual variance was modeled using five classes. The average lactation curve was modeled using a fourth-order Legendre polynomial. Heritability estimates for measures of persistency ranged from 0.10 to 0.25. Genetic correlations between measures of persistency and 305-day milk yield (Y305) ranged from -0.52 to 0.03. At high selection intensities for persistency measures and Y305, few animals were selected in common. As the selection intensity for the two traits decreased, a higher percentage of animals were selected in common. The average predicted breeding values for Y305 according to year of birth of the cows had a substantial annual genetic gain. In contrast, no improvement in the average persistency breeding value was observed. We conclude that selection for total milk yield during lactation does not identify bulls or cows that are genetically superior in terms of milk yield persistency. A measure of persistency represented by the sum of deviations of estimated breeding value for days 31 to 280 in relation to estimated breeding value for day 30 should be preferred in genetic evaluations of this trait in the Gyr breed, since this measure showed a medium heritability and a genetic correlation with 305-day milk yield close to zero. In addition, this measure is more adequate at the time of peak lactation, which occurs between days 25 and 30 after calving in this breed. 650 $aGado Leiteiro 653 $aFunção de covariância 653 $aParametros genéticos 653 $aProdução de leite 700 1 $aVERNEQUE, R. da S. 700 1 $aLOPES, P. S. 700 1 $aSANTANA JUNIOR, M. L. 700 1 $aLAGROTTA, M. R. 700 1 $aTORRES, R. A. 700 1 $aVERCESI FILHO, A. E. 700 1 $aMACHADO, M. A. 773 $tGenetics and Molecular Research$gv. 11, n. 2., p. 1599-1609, 2012.
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