Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1017/S0021859617000028 http://hdl.handle.net/11449/174390 |
Resumo: | Genetic parameters for visual assessment traits measured at 487 days of age (body structure (BS), finishing precocity (FP) and muscling (MS)), body weight at 450 days of age (W450), age at first calving (AFC), heifer pregnancy (HP) and stayability (STAY, i.e. the probability of a cow to produce at least three calves before reaching 76 months of age) were estimated in Nellore cattle, seeking to include these traits in the selection criteria for dams. The statistical models included additive genetic and residual random effects using single- and two-trait Bayesian analyses. The average heritability estimates were equal to 0·37 for BS, 0·42 for FP, 0·37 for MS and 0·48 for W450. Age at first calving had a low average heritability estimate (0·13), while HP and STAY estimates were higher (0·36 and 0·24, respectively). The genetic correlations between AFC, HP and STAY with visual assessment traits and body weight were favourable, indicating that selecting animals with higher BS, FP, MS and W450 values will result in the indirect selection of animals with lower AFC and successful scores for HP and STAY. The selection of heifers that present an early pregnancy should anticipate AFC and improve HP in the current herd. Except for AFC, the heritability and genetic correlation estimates between the studied traits justify their inclusion in the selection criteria of the Nellore breeding programme. |
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Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattleGenetic parameters for visual assessment traits measured at 487 days of age (body structure (BS), finishing precocity (FP) and muscling (MS)), body weight at 450 days of age (W450), age at first calving (AFC), heifer pregnancy (HP) and stayability (STAY, i.e. the probability of a cow to produce at least three calves before reaching 76 months of age) were estimated in Nellore cattle, seeking to include these traits in the selection criteria for dams. The statistical models included additive genetic and residual random effects using single- and two-trait Bayesian analyses. The average heritability estimates were equal to 0·37 for BS, 0·42 for FP, 0·37 for MS and 0·48 for W450. Age at first calving had a low average heritability estimate (0·13), while HP and STAY estimates were higher (0·36 and 0·24, respectively). The genetic correlations between AFC, HP and STAY with visual assessment traits and body weight were favourable, indicating that selecting animals with higher BS, FP, MS and W450 values will result in the indirect selection of animals with lower AFC and successful scores for HP and STAY. The selection of heifers that present an early pregnancy should anticipate AFC and improve HP in the current herd. Except for AFC, the heritability and genetic correlation estimates between the studied traits justify their inclusion in the selection criteria of the Nellore breeding programme.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Departamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/nDepartamento de Zootecnia Universidade Federal da Paraíba (UFPB) Centro de Ciências Agrárias - Campus II, Rodovia BR 079 - Km 12Brasil Com Z - Zootecnia Tropical Rua Juca Quito, 800 - Sala 5Associação Nacional de Criadores e Pesquisadores (ANCP), Rua João Godoy, 463Departamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/nUniversidade Estadual Paulista (Unesp)Universidade Federal da Paraíba (UFPB)Rua Juca QuitoAssociação Nacional de Criadores e Pesquisadores (ANCP)Paterno, F. M. [UNESP]Buzanskas, M. E.Koury Filho, W.Lôbo, R. B.Queiroz, S. A. [UNESP]2018-12-11T17:10:54Z2018-12-11T17:10:54Z2017-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article679-687application/pdfhttp://dx.doi.org/10.1017/S0021859617000028Journal of Agricultural Science, v. 155, n. 4, p. 679-687, 2017.1469-51460021-8596http://hdl.handle.net/11449/17439010.1017/S00218596170000282-s2.0-850164105232-s2.0-85016410523.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Agricultural Science0,5630,563info:eu-repo/semantics/openAccess2024-01-17T06:26:55Zoai:repositorio.unesp.br:11449/174390Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-17T06:26:55Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
title |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
spellingShingle |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle Paterno, F. M. [UNESP] |
title_short |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
title_full |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
title_fullStr |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
title_full_unstemmed |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
title_sort |
Genetic analysis of visual assessment and body weight traits and their relationships with reproductive traits in Nellore cattle |
author |
Paterno, F. M. [UNESP] |
author_facet |
Paterno, F. M. [UNESP] Buzanskas, M. E. Koury Filho, W. Lôbo, R. B. Queiroz, S. A. [UNESP] |
author_role |
author |
author2 |
Buzanskas, M. E. Koury Filho, W. Lôbo, R. B. Queiroz, S. A. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal da Paraíba (UFPB) Rua Juca Quito Associação Nacional de Criadores e Pesquisadores (ANCP) |
dc.contributor.author.fl_str_mv |
Paterno, F. M. [UNESP] Buzanskas, M. E. Koury Filho, W. Lôbo, R. B. Queiroz, S. A. [UNESP] |
description |
Genetic parameters for visual assessment traits measured at 487 days of age (body structure (BS), finishing precocity (FP) and muscling (MS)), body weight at 450 days of age (W450), age at first calving (AFC), heifer pregnancy (HP) and stayability (STAY, i.e. the probability of a cow to produce at least three calves before reaching 76 months of age) were estimated in Nellore cattle, seeking to include these traits in the selection criteria for dams. The statistical models included additive genetic and residual random effects using single- and two-trait Bayesian analyses. The average heritability estimates were equal to 0·37 for BS, 0·42 for FP, 0·37 for MS and 0·48 for W450. Age at first calving had a low average heritability estimate (0·13), while HP and STAY estimates were higher (0·36 and 0·24, respectively). The genetic correlations between AFC, HP and STAY with visual assessment traits and body weight were favourable, indicating that selecting animals with higher BS, FP, MS and W450 values will result in the indirect selection of animals with lower AFC and successful scores for HP and STAY. The selection of heifers that present an early pregnancy should anticipate AFC and improve HP in the current herd. Except for AFC, the heritability and genetic correlation estimates between the studied traits justify their inclusion in the selection criteria of the Nellore breeding programme. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-01 2018-12-11T17:10:54Z 2018-12-11T17:10:54Z |
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/10.1017/S0021859617000028 Journal of Agricultural Science, v. 155, n. 4, p. 679-687, 2017. 1469-5146 0021-8596 http://hdl.handle.net/11449/174390 10.1017/S0021859617000028 2-s2.0-85016410523 2-s2.0-85016410523.pdf |
url |
http://dx.doi.org/10.1017/S0021859617000028 http://hdl.handle.net/11449/174390 |
identifier_str_mv |
Journal of Agricultural Science, v. 155, n. 4, p. 679-687, 2017. 1469-5146 0021-8596 10.1017/S0021859617000028 2-s2.0-85016410523 2-s2.0-85016410523.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Agricultural Science 0,563 0,563 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
679-687 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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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1797790321637064704 |