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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
04/03/2015 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KERN, E. L.; COBUCI, J. A.; COSTA, C. N.; BRACCINI NETO, J.; CAMPOS, G. S.; MCMANUS, C. M. |
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Afiliação: |
ELISANDRA L. KERN, UFRGS; JAIME A. COBUCI, UFRGS; CLAUDIO NAPOLIS COSTA, CNPGL; JOSÉ BRACCINI NETO, UFRGS; GABRIEL S. CAMPOS, UFPEL; CONCEPTA M. MCMANUS, UNB; Instituto Nacional de Ciência e Tecnologia - Informação Genético-Sanitária da Pecuária Brasileira. |
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Título: |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Archiv fur Tierzucht, v. 57, n. 33, p. 1-12, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim in this study was to estimate variance components and heritability of different longevity measures related to productive life and survival at a specified age, using linear and threshold models, to specify the more appropriate measure to express longevity in Brazilian Holstein cows. Production and reproduction records of Holstein cows were collected from 1991 to 2010, for cows born between 1987 and 2006. Variance components were obtained by restricted maximum likelihood (REML) for measures of productive life and a Bayesian analysis for survival measures. The heritability estimates for longevity measures ranged from 0.06 to 0.09, using the linear model and from 0.05 to 0.18 for traits using the threshold model. This suggests an inexpressive genetic gain using selection for these traits, whereas improvements in environmental factors which affect these animals may lead to greater phenotypic gains. Survival up to 48 months from first calving was the measureing point defined as the most appropriate to be included in future official genetic evaluations of Holstein cattle in Brazil. |
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Palavras-Chave: |
Bayesian method; Productive life; REML method; Survival in herd. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1010574/1/Genetic-parameters-for-longevity-measures-in-Brazilian-Holstein-cattle.pdf
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Marc: |
LEADER 01778naa a2200229 a 4500
001 2010574
005 2024-02-05
008 2014 bl uuuu u00u1 u #d
100 1 $aKERN, E. L.
245 $aGenetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models.$h[electronic resource]
260 $c2014
520 $aThe aim in this study was to estimate variance components and heritability of different longevity measures related to productive life and survival at a specified age, using linear and threshold models, to specify the more appropriate measure to express longevity in Brazilian Holstein cows. Production and reproduction records of Holstein cows were collected from 1991 to 2010, for cows born between 1987 and 2006. Variance components were obtained by restricted maximum likelihood (REML) for measures of productive life and a Bayesian analysis for survival measures. The heritability estimates for longevity measures ranged from 0.06 to 0.09, using the linear model and from 0.05 to 0.18 for traits using the threshold model. This suggests an inexpressive genetic gain using selection for these traits, whereas improvements in environmental factors which affect these animals may lead to greater phenotypic gains. Survival up to 48 months from first calving was the measureing point defined as the most appropriate to be included in future official genetic evaluations of Holstein cattle in Brazil.
653 $aBayesian method
653 $aProductive life
653 $aREML method
653 $aSurvival in herd
700 1 $aCOBUCI, J. A.
700 1 $aCOSTA, C. N.
700 1 $aBRACCINI NETO, J.
700 1 $aCAMPOS, G. S.
700 1 $aMCMANUS, C. M.
773 $tArchiv fur Tierzucht$gv. 57, n. 33, p. 1-12, 2014.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| 1. |  | SOUZA, A. R.; LOPES E. N.; SILVA, M. A.; LOPES, G. N.; DIAS, A. M. M. P.; QUERINO, R. B.; ALVARENGA, C. D.; STRIKIS, P. Primeiro registro de Asobara obliqua (papp,1969) (hymenoptera: braconidae, alysiinae) parasitando lonchaeidae em Ziziphus joazeiro mart. (Rhamnaceae) no Brasil. In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 10., Brasília, DF, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 2. | | QUERINO, R. B.; DIAS, A. M. M. P.; ALE-ROCHA, R.; COSTA, G. M. da; QUEIROZ, L. de O.; FEITOSA, M. C. B.; NASCIMENTO, E. T.; GONÇALVES, A. N. Composição da fauna de himenópteros parasitóides no dossel e no sub-bosque de uma reserva de floresta contínua na Amazônia Central, Manaus, Am, Brasil. In: SIMPÓSIO DE CONTROLE BIOLÓGICO, 10., Brasília, DF, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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