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| Registros recuperados : 72 | |
| 3. |  | ASSIS, T. F.; BRUNE, A.; EUCLYDES, R. F. Ensaio de procedências de Eucalyptus citriodora Hook. Silvicultura, São Paulo, v. 8, n. 28, p. 162-164, 1983. Edição dos anais do 4º Congresso Florestal Brasileiro, 1982, Belo Horizonte.| Biblioteca(s): Embrapa Florestas. |
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| 4. | | ASSIS, T. F.; BRUNE, A.; EUCLYDES, R. F. Ensaio de progênies de Eucalyptus citriodora Hook. Silvicultura, São Paulo, v. 8, n. 28, p. 156-157, 1983. Edição dos anais do 4º Congresso Florestal Brasileiro, 1982, Belo Horizonte.| Biblioteca(s): Embrapa Florestas. |
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| 5. | | ASSIS, T. F.; BRUNE, A.; EUCLYDES, R. F. Ensaio de progênies de Eucalyptus cloeziana F. Muell. Silvicultura, São Paulo, v. 8, n. 28, p. 158-159, 1983. Edição dos anais do 4º Congresso Florestal Brasileiro, 1982, Belo Horizonte.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | ASSIS, T. F.; BRUNE, A.; EUCLYDES, R. F. Ensaio de progênies de Eucalyptus paniculata Sm. Silvicultura, São Paulo, v. 8, n. 28, p. 160-162, 1983. Edição dos anais do 4º Congresso Florestal Brasileiro, 1982, Belo Horizonte.| Biblioteca(s): Embrapa Florestas. |
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| 12. | | BRAGA, L. G. T.; OLIVEIRA, M. G. de A.; LIMA, W. C.; EUCLYDES, R. F. Atividade da amilase em rã-touro durante a fase pós-metamórfica. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 10, p. 947-951, out. 2005 Título em inglês: Amylase activity in the bullfrog during the post-metamorphic phase.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 16. | | SOARES, J. V.; VIANELLO, R. L.; SEDIYAMA, G. C.; COELHO, D. T.; EUCLYDES, R. F. Modelos físico-matemáticos de saída estatística para diagnosticar e prever a marcha diária da temperatura, para a região sul de Minas Gerais. Experientiae, Viçosa, MG, v. 27, n. 12, p. 233-248, dez. 1981. il.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 18. | | COBUCI, J. A.; EUCLYDES, R. F.; COSTA, C. N.; TORRES, R. de A.; LOPES, P. S.; PEREIRA, C. S. Genetic evaluation for persistency of lactation in Holstein cows using a random regression model. Genetics and Molecular Biology, Ribeirão Preto, v. 30, n. 2, p. 349-355, 2007.| Biblioteca(s): Embrapa Gado de Leite. |
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| 19. | | LEHNER, H. G.; LAGROTTA, M. R.; VELOSO, A. V.; SILVA, L. P. da; EUCLYDES, R. F.; VERNEQUE, R. da S. Herdalidade e tendência genética para algumas características morfológicas em vacas da raça Gir. In: SIMPÓSIO BRASILEIRO DE AGROPECUÁRIA SUSTENTÁVEL, 1., 2009, Viçosa, MG. Anais... Viçosa, MG: UFV, 2009. p, 340-343.| Biblioteca(s): Embrapa Gado de Leite. |
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| 20. | | OLIVEIRA, C. G. de; CUNHA, E. E.; CARNEIRO, P. L. S.; EUCLYDES, R. F.; MALHADO, C. H. M. Comparação de métodos de seleção em populações simuladas de frangos de corte. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 10, p. 969-974, out. 2005 Título em inglês: Comparison of selection methods in simulated populations of broilers.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 72 | |
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Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
10/10/2007 |
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Data da última atualização: |
29/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
COBUCI, J. A.; EUCLYDES, R. F.; COSTA, C. N.; TORRES, R. de A.; LOPES, P. S.; PEREIRA, C. S. |
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Afiliação: |
Jaime Araújo Cobuci, UFRGS; Ricardo Frederico Euclydes, UFV; Cláudio Napolis Costa, Embrapa Gado de Leite; Robledo de Almeida Torres, UFV; Paulo Sávio Lopes, UFV; Carmem Silva Pereira, UFV. |
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Título: |
Genetic evaluation for persistency of lactation in Holstein cows using a random regression model. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v. 30, n. 2, p. 349-355, 2007. |
|
DOI: |
https://doi.org/10.1590/S1415-47572007000300009 |
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Idioma: |
Inglês |
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Conteúdo: |
A model for analyzing test day records including both fixed and random coefficients was applied to the genetic evaluation of first lactation data for Holstein cows. Data comprising 87045 test-day milk yield records from calving between 1997 and 2001 from Holstein herds in 10 regions of the Brazilian state of Minas Gerais. Six persistency of lactation measures were evaluated using breeding values obtained by random regression analyses. The Wilmink function was used to model the additive genetic and permanent environmental effects. Residual variance was constant throughout lactation. Ranking for animals did not change among criteria for persistency measurements, but ranking changes were observed when the estimated breeding value (EBV) for persistency of lactation was contrasted with those estimated for 305-day milk yield (305MY). The rank correlation estimates for persistency of lactation and 305MY were practically the same for sire and cows, and ranged from -0.45 to 0.69. The EBVs for milk yield during lactation for sires producing daughters with superior 305MY indicate genetic differences between sires regarding their ability to transmit desirable persistency of lactation traits. This suggests that selection for total lactation milk yield does not identify sires or cows that are genetically superior in regard to persistency of lactation. Genetic evaluation for persistency of lactation is important for improving the efficiency of the milk production capacity of Holstein cows. |
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Palavras-Chave: |
Genetic evaluation; persistency of lactation; random regression models; rank correlation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/595956/1/Genetic-evaluation-for-persistency-of-lactation-in-Holstein-cows-using-a-random-regression-model.pdf
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Marc: |
LEADER 02295naa a2200241 a 4500
001 1595956
005 2022-09-29
008 2007 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1415-47572007000300009$2DOI
100 1 $aCOBUCI, J. A.
245 $aGenetic evaluation for persistency of lactation in Holstein cows using a random regression model.$h[electronic resource]
260 $c2007
520 $aA model for analyzing test day records including both fixed and random coefficients was applied to the genetic evaluation of first lactation data for Holstein cows. Data comprising 87045 test-day milk yield records from calving between 1997 and 2001 from Holstein herds in 10 regions of the Brazilian state of Minas Gerais. Six persistency of lactation measures were evaluated using breeding values obtained by random regression analyses. The Wilmink function was used to model the additive genetic and permanent environmental effects. Residual variance was constant throughout lactation. Ranking for animals did not change among criteria for persistency measurements, but ranking changes were observed when the estimated breeding value (EBV) for persistency of lactation was contrasted with those estimated for 305-day milk yield (305MY). The rank correlation estimates for persistency of lactation and 305MY were practically the same for sire and cows, and ranged from -0.45 to 0.69. The EBVs for milk yield during lactation for sires producing daughters with superior 305MY indicate genetic differences between sires regarding their ability to transmit desirable persistency of lactation traits. This suggests that selection for total lactation milk yield does not identify sires or cows that are genetically superior in regard to persistency of lactation. Genetic evaluation for persistency of lactation is important for improving the efficiency of the milk production capacity of Holstein cows.
653 $aGenetic evaluation
653 $apersistency of lactation
653 $arandom regression models
653 $arank correlation
700 1 $aEUCLYDES, R. F.
700 1 $aCOSTA, C. N.
700 1 $aTORRES, R. de A.
700 1 $aLOPES, P. S.
700 1 $aPEREIRA, C. S.
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv. 30, n. 2, p. 349-355, 2007.
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