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| Registros recuperados : 52 | |
| 1. |  | PRATA, M. A.; MOREIRA, H. L.; VERCESI FILHO, A. E.; VERNEQUE, R. da S.; CARDOSO, V. L.; EL FARO, L. Parametros geneticos para caracteristicas de produção e qualidade do leite para a raça Gir leiteiro. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 10., 2013, Uberaba. Anais... Viçosa: Sociedade Brasileira de Melhoramento Animal, 2013.| Biblioteca(s): Embrapa Gado de Leite. |
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| 4. | | PEREIRA, R. J.; BIGNARDI, A. B.; EL FARO, L.; VERNEQUE, R. da S.; VERCESI FILHO, A. E.; ALBUQUERQUE, L. G. Random regression models using legendre polynomials or linear splines for test-day milk yield of dairy Gyr (Bos indicus) cattle. Journal of Dairy Science, v. 96, n. 1, p. 565-574, 2013.| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | REWE, T. O.; PEIXOTO, M. G. C. D.; CARDOSO, V. L.; VERCESI FILHO, A. E.; EL FARO, L.; STRANDBERG, E. Gir for the Giriama: the case for Zebu dairying in the tropics: a review. Livestock Research for Rural Development, v. 27, n. 8, p. 1-11, 2015.| Biblioteca(s): Embrapa Gado de Leite. |
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| 7. | | 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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| 8. | | VERNEQUE, R. da S.; VERCESI FILHO, A. E.; SILVA, M. V. G. B.; MACHADO, M. A.; PANETTO, J. C. do C.; FERNANDES, A. R. Melhoramento genético do Gir Leiteiro. Informe Agropecuário, v. 36, n. 286, p. 24-34, 2015.| Biblioteca(s): Embrapa Gado de Leite. |
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| 9. | | 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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| 11. | | VERCESI FILHO, A. E.; MADALENA, F. E.; ALBUQUERQUE, L. G.; FREITAS, A. F. de; BORGES, L. E.; FERREIRA, J. J.; TEODORO, R. L.; FARIA, F. J. C. Parâmetros genéticos entre características de leite, de peso e a idade ao primeiro parto em gado mestiço leiteiro (Bos taurus x Bos indicus). Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 59, n. 4, p. 983-990, ago. 2007.| Biblioteca(s): Embrapa Gado de Leite. |
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| 12. | | GIGLIOTI, R.; OKINO, C. H.; AZEVEDO, B. T.; GUTMANIS, G.; KATIKI, L. M.; OLIVEIRA, M. C. de S.; VERCESI FILHO, A. E. Novel LNA probe-based assay for the A1 and A2 identification ofB-casein gene in milk samples. Food Chemistry: Molecular Sciences, v.3, 2021, 100055. 6 p.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 13. | | PRATA, M. A.; VERCESI FILHO, A. E.; FARO, L. E.; VERNEQUE, R. da S.; PANETTO, J. C. do C.; CARDOSO, V. L.; FERNANDES, A. R. Objetivos de seleção para características de produção e qualidade do leite para a raça Gir Leiteiro Informe Agropecuário, v. 36, n. 286, p. 41-50, 2015.| Biblioteca(s): Embrapa Gado de Leite. |
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| 14. | | AZEVEDO, B. T.; VERCESI FILHO, A. E.; GUTMANIS, G.; VERISSIMO, C. J.; KATIKI, L. M.; OKINO, C. H.; OLIVEIRA, M. C. de S.; GIGLIOTI, R. New sensitive methods for fraud detection in buffalo dairy products. International Dairy Journal, v.117, 105013, jun. 2021. 9 p.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 15. | | VERCESI FILHO, A. E.; VERNEQUE, R. da S.; PEIXOTO, M. G. C. D.; MACHADO, M. A.; PENNA, V. M.; CARDOSO, V. L. Selection of tropical Dairy Cattle - The Experience From the Brazilian Gyr and Guzerat. In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 9., 2010, Leipzig. Proceedings... Leipzig: German Society fo Animal Science, 2010. 8 p.| Biblioteca(s): Embrapa Gado de Leite. |
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| 16. | | GIGLIOTI, R.; AZEVEDO, B. T.; OLIVEIRA, H. N. DE; KATIKI, L. M.; VERCESI FILHO, A. E.; OLIVEIRA, M. C. de S.; OKINO, C. H. How long does the mRNA remains stable in untreated whole bovine blood? Molecular Biology Reports, v. 49, n. 1, p. 789-795, jan. 2021.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 17. | | SCALEZ, D. C. B.; RIBEIRO, T. B.; SANTOS, D. J. DE A.; TONHATI, H.; VERCESI FILHO, A. E.; VERNEQUE, R. da S. Heterogeneidade de variâncias para a produção de leite ao dia do controle em raças Gir. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 10., 2013, Uberaba. Anais... Viçosa: Sociedade Brasileira de Melhoramento Animal, 2013.| Biblioteca(s): Embrapa Gado de Leite. |
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| 18. | | VIZONA, R. G.; PEREZ, B. da C.; PEIXOTO, M. G. C. D.; VIANA, J. H. M.; VENTURA, R. V.; VERCESI FILHO, A. E.; BALIEIRO, J. C. de C. Genetic analysis of in-vitro embryo production traits in Dairy Gir cattle. Theriogenology, v. 148, p. 149-161, 2020.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 19. | | PRATA, M. C. de A.; EL FARO, L.; VERNEQUE, R. da S.; VERCESI FILHO, A. E.; PEIXOTO, M. G. C. D.; MOREIRA, E. L.; CARDOSO, V. L. Genetic parameters for milk production traits and breeding goals for Gir dairy cattle in Brazil. Genetics and Molecular Research, v. 14, n. 4, p. 12585-12594, 2015.| Biblioteca(s): Embrapa Gado de Leite. |
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| 20. | | PRATA, M. A.; EL FARO, L.; VERNEQUE, R. da S.; VERCESI FILHO, A. E.; PEIXOTO, M. G. C. D.; MOREIRA, E. L.; CARDOSO, V. L. Genetic parameters for milk production traits and breeding goals for Gir dairy cattle in Brazil. In: WORLD CONGRESS OF GENETICS APPLIED TO LIVESTOCK PRODUCTION, 10., 2014, Vancouver. Proceedings... Champaign: ASAS, 2014. 3 p.| Biblioteca(s): Embrapa Gado de Leite. |
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| Registros recuperados : 52 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/12/2012 |
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Data da última atualização: |
09/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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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. |
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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. |
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Título: |
Milk yield persistency in brazilian gyr cattle based on a random regression model. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 11, n. 2., p. 1599-1609, 2012. |
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DOI: |
https://doi.org/10.4238/2012.june.15.9 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Função de covariância; Parametros genéticos; Produção de leite. |
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Thesagro: |
Gado Leiteiro. |
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Categoria do assunto: |
G Melhoramento Genético |
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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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Embrapa Gado de Leite (CNPGL) |
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