Genetic parameters for type traits in Holstein cows in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/98417 |
Resumo: | Data from 26,558 Holstein cows in 802 herds were used to estimate genetic, residual and phenotypic parameters for 22 type traits. The model included the fixed effects of herd-year, period of classification, classifier, stage of lactation and age of cows at calving (covariate) and random genetic and residual effects. Heritability for type traits ranged from 0.10 to 0.39. The genetic variability in these traits suggested the possibility for moderate genetic gains through selection. The phenotypic correlations were moderated, mainly in the section conformation. Genetic correlations between type traits ranged from -0.44 to 0.85. High genetic correlations indicated that breeding programs could be successful without including all type traits. The selection for the final score at the expense of other traits must be performed with restraint, because in the long term, this may promote undesirable changes in some type traits. |
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Campos, Rafael ViegasCobuci, Jaime AraújoCosta, Claudio NapolisBraccini Neto, José2014-07-23T02:05:46Z20121516-3598http://hdl.handle.net/10183/98417000874198Data from 26,558 Holstein cows in 802 herds were used to estimate genetic, residual and phenotypic parameters for 22 type traits. The model included the fixed effects of herd-year, period of classification, classifier, stage of lactation and age of cows at calving (covariate) and random genetic and residual effects. Heritability for type traits ranged from 0.10 to 0.39. The genetic variability in these traits suggested the possibility for moderate genetic gains through selection. The phenotypic correlations were moderated, mainly in the section conformation. Genetic correlations between type traits ranged from -0.44 to 0.85. High genetic correlations indicated that breeding programs could be successful without including all type traits. The selection for the final score at the expense of other traits must be performed with restraint, because in the long term, this may promote undesirable changes in some type traits.application/pdfengRevista brasileira de zootecnia= Brazilian journal of animal science [recurso eletrônico]. Viçosa, MG. Vol. 41, n. 10 (out. 2012), p. 2150-2161Gado leiteiroGenética animalGado holandesMelhoramento genetico animal(Co)variance componentsDairy cattleGenetic correlationsHeritabilityREMLF90SelectionGenetic parameters for type traits in Holstein cows in Brazilinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000874198.pdf000874198.pdfTexto completo (inglês)application/pdf164539http://www.lume.ufrgs.br/bitstream/10183/98417/1/000874198.pdfd44bd5a9780a5c7781b9e929ca072c65MD51TEXT000874198.pdf.txt000874198.pdf.txtExtracted Texttext/plain49962http://www.lume.ufrgs.br/bitstream/10183/98417/2/000874198.pdf.txt1ac612e5dd8414530cc9e589d7f83c8cMD52THUMBNAIL000874198.pdf.jpg000874198.pdf.jpgGenerated Thumbnailimage/jpeg1843http://www.lume.ufrgs.br/bitstream/10183/98417/3/000874198.pdf.jpg4c888bcdf71fe771ca84a0d414d554ddMD5310183/984172021-07-09 04:38:08.01436oai:www.lume.ufrgs.br:10183/98417Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-07-09T07:38:08Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Genetic parameters for type traits in Holstein cows in Brazil |
title |
Genetic parameters for type traits in Holstein cows in Brazil |
spellingShingle |
Genetic parameters for type traits in Holstein cows in Brazil Campos, Rafael Viegas Gado leiteiro Genética animal Gado holandes Melhoramento genetico animal (Co)variance components Dairy cattle Genetic correlations Heritability REMLF90 Selection |
title_short |
Genetic parameters for type traits in Holstein cows in Brazil |
title_full |
Genetic parameters for type traits in Holstein cows in Brazil |
title_fullStr |
Genetic parameters for type traits in Holstein cows in Brazil |
title_full_unstemmed |
Genetic parameters for type traits in Holstein cows in Brazil |
title_sort |
Genetic parameters for type traits in Holstein cows in Brazil |
author |
Campos, Rafael Viegas |
author_facet |
Campos, Rafael Viegas Cobuci, Jaime Araújo Costa, Claudio Napolis Braccini Neto, José |
author_role |
author |
author2 |
Cobuci, Jaime Araújo Costa, Claudio Napolis Braccini Neto, José |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Campos, Rafael Viegas Cobuci, Jaime Araújo Costa, Claudio Napolis Braccini Neto, José |
dc.subject.por.fl_str_mv |
Gado leiteiro Genética animal Gado holandes Melhoramento genetico animal |
topic |
Gado leiteiro Genética animal Gado holandes Melhoramento genetico animal (Co)variance components Dairy cattle Genetic correlations Heritability REMLF90 Selection |
dc.subject.eng.fl_str_mv |
(Co)variance components Dairy cattle Genetic correlations Heritability REMLF90 Selection |
description |
Data from 26,558 Holstein cows in 802 herds were used to estimate genetic, residual and phenotypic parameters for 22 type traits. The model included the fixed effects of herd-year, period of classification, classifier, stage of lactation and age of cows at calving (covariate) and random genetic and residual effects. Heritability for type traits ranged from 0.10 to 0.39. The genetic variability in these traits suggested the possibility for moderate genetic gains through selection. The phenotypic correlations were moderated, mainly in the section conformation. Genetic correlations between type traits ranged from -0.44 to 0.85. High genetic correlations indicated that breeding programs could be successful without including all type traits. The selection for the final score at the expense of other traits must be performed with restraint, because in the long term, this may promote undesirable changes in some type traits. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012 |
dc.date.accessioned.fl_str_mv |
2014-07-23T02:05:46Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/98417 |
dc.identifier.issn.pt_BR.fl_str_mv |
1516-3598 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000874198 |
identifier_str_mv |
1516-3598 000874198 |
url |
http://hdl.handle.net/10183/98417 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de zootecnia= Brazilian journal of animal science [recurso eletrônico]. Viçosa, MG. Vol. 41, n. 10 (out. 2012), p. 2150-2161 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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