Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference

Detalhes bibliográficos
Autor(a) principal: Boligon, A. A. [UNESP]
Data de Publicação: 2012
Outros Autores: Baldi, Fernando [UNESP], Albuquerque, Lucia Galvão de [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4238/2012.October.17.2
http://hdl.handle.net/11449/4972
Resumo: We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW.
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spelling Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inferenceBayesian inferenceBeef cattleFertilityGenetic parameterWe estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista, Fac Ciencias & Agr & Vet, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias & Agr & Vet, Jaboticabal, SP, BrazilFunpec-editoraUniversidade Estadual Paulista (Unesp)Boligon, A. A. [UNESP]Baldi, Fernando [UNESP]Albuquerque, Lucia Galvão de [UNESP]2014-05-20T13:19:12Z2014-05-20T13:19:12Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4516-4524application/pdfhttp://dx.doi.org/10.4238/2012.October.17.2Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012.1676-5680http://hdl.handle.net/11449/497210.4238/2012.October.17.2WOS:000313960500096WOS000313960500096.pdf5866981114947883Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Research0,439info:eu-repo/semantics/openAccess2024-06-07T18:40:40Zoai:repositorio.unesp.br:11449/4972Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:08:58.410690Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
title Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
spellingShingle Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
Boligon, A. A. [UNESP]
Bayesian inference
Beef cattle
Fertility
Genetic parameter
title_short Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
title_full Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
title_fullStr Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
title_full_unstemmed Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
title_sort Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
author Boligon, A. A. [UNESP]
author_facet Boligon, A. A. [UNESP]
Baldi, Fernando [UNESP]
Albuquerque, Lucia Galvão de [UNESP]
author_role author
author2 Baldi, Fernando [UNESP]
Albuquerque, Lucia Galvão de [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Boligon, A. A. [UNESP]
Baldi, Fernando [UNESP]
Albuquerque, Lucia Galvão de [UNESP]
dc.subject.por.fl_str_mv Bayesian inference
Beef cattle
Fertility
Genetic parameter
topic Bayesian inference
Beef cattle
Fertility
Genetic parameter
description We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 (success) or 0 (failure) to heifers that calved or not, respectively, given that they had calved once before. Records from 127,430 Nellore animals were analyzed. Genetic parameters were estimated by Bayesian inference using a nonlinear (threshold) animal model for SR and a linear animal model for the other traits in three-trait analyses, including SR and WW in all analyses. The posterior means of heritability for SR, WW, WG, AFC, and MW were 0.18 +/- 0.02, 0.21 +/- 0.01, 0.30 +/- 0.01, 0.21 +/- 0.01, and 0.45 +/- 0.04, respectively. The posterior mean estimates of genetic correlations between SR and WW, WG, AFC, and MW were -0.20 +/- 0.06, 0.31 +/- 0.07, -0.77 +/- 0.05, and -0.15 +/- 0.09, respectively. Based on these genetic correlations, selection for higher gains for WG and younger AFC should result in an increase in heifer SR rates, while long-term selection for increasing WW should promote unfavorable responses in heifer SR. The use of breeding values for heifer SR as a selection criterion of Nellore bulls could increase heifer SR rate without significant changes in MW.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
2014-05-20T13:19:12Z
2014-05-20T13:19:12Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.4238/2012.October.17.2
Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012.
1676-5680
http://hdl.handle.net/11449/4972
10.4238/2012.October.17.2
WOS:000313960500096
WOS000313960500096.pdf
5866981114947883
url http://dx.doi.org/10.4238/2012.October.17.2
http://hdl.handle.net/11449/4972
identifier_str_mv Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 11, n. 4, p. 4516-4524, 2012.
1676-5680
10.4238/2012.October.17.2
WOS:000313960500096
WOS000313960500096.pdf
5866981114947883
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Genetics and Molecular Research
0,439
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4516-4524
application/pdf
dc.publisher.none.fl_str_mv Funpec-editora
publisher.none.fl_str_mv Funpec-editora
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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