Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models.
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010574 |
Resumo: | 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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Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models.Bayesian methodREML methodSurvival in herdProductive lifeThe 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.ELISANDRA L. KERN, UFRGSJAIME A. COBUCI, UFRGSCLAUDIO NAPOLIS COSTA, CNPGLJOSÉ BRACCINI NETO, UFRGSGABRIEL S. CAMPOS, UFPELCONCEPTA M. MCMANUS, UNBInstituto Nacional de Ciência e Tecnologia - Informação Genético-Sanitária da Pecuária Brasileira.KERN, E. L.COBUCI, J. A.COSTA, C. N.BRACCINI NETO, J.CAMPOS, G. S.MCMANUS, C. M.2024-02-05T11:32:21Z2024-02-05T11:32:21Z2015-03-042014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleArchiv fur Tierzucht, v. 57, n. 33, p. 1-12, 2014.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010574enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2024-02-05T11:32:21Zoai:www.alice.cnptia.embrapa.br:doc/1010574Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542024-02-05T11:32:21falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542024-02-05T11:32:21Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
title |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
spellingShingle |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. KERN, E. L. Bayesian method REML method Survival in herd Productive life |
title_short |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
title_full |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
title_fullStr |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
title_full_unstemmed |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
title_sort |
Genetic parameters for longevity measures in Brazilian Holstein cattle using linear and threshold models. |
author |
KERN, E. L. |
author_facet |
KERN, E. L. COBUCI, J. A. COSTA, C. N. BRACCINI NETO, J. CAMPOS, G. S. MCMANUS, C. M. |
author_role |
author |
author2 |
COBUCI, J. A. COSTA, C. N. BRACCINI NETO, J. CAMPOS, G. S. MCMANUS, C. M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
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. |
dc.contributor.author.fl_str_mv |
KERN, E. L. COBUCI, J. A. COSTA, C. N. BRACCINI NETO, J. CAMPOS, G. S. MCMANUS, C. M. |
dc.subject.por.fl_str_mv |
Bayesian method REML method Survival in herd Productive life |
topic |
Bayesian method REML method Survival in herd Productive life |
description |
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. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2015-03-04 2024-02-05T11:32:21Z 2024-02-05T11:32:21Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Archiv fur Tierzucht, v. 57, n. 33, p. 1-12, 2014. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010574 |
identifier_str_mv |
Archiv fur Tierzucht, v. 57, n. 33, p. 1-12, 2014. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010574 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503557418844160 |