Avaliação genética de bovinos da raça Nelore em diferentes condições de criação

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Viana, Alexandra Fabielle Pereira lattes
Orientador(a): Rorato, Paulo Roberto Nogara lattes
Banca de defesa: Prestes, Alan Miranda lattes, Alves Filho, Dari Celestino lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Santa Maria
Centro de Ciências Rurais
Programa de Pós-Graduação: Programa de Pós-Graduação em Zootecnia
Departamento: Zootecnia
País: Brasil
Palavras-chave em Português:
Desempenho pós desmama
Escores visuais
Idade ao primeiro parto
Índice de seleção
Palavras-chave em Inglês:
Age at first calving
Post-weaning performance
Selection indices
Área do conhecimento CNPq:
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
Link de acesso: http://repositorio.ufsm.br/handle/1/18617
Resumo: The objective of this study was to estimate genetic parameters for the productive, reproductive and morphological characteristics of Nellore animals, to verify how the breeding values of the traits are distributed in different Brazilian states and to suggest a selection index by state/sex. The genetic parameters were estimated by uncharacteristic analysis under animal model, using the MLRM method. Estimate genetic values (EBV) of higher heritability characteristics and age at first calving were explored by principal component analysis. Participating males of performance test and grass-fed showed better EBVD400, EBVP550 and EBVPE550, however, the test participants in stable had the best VGs for the visual scores. For females the best EBVD400 were from the animals in stable, regardless of the age of weaning. In state of PR they are the best EBVP550 and EBVD400 in males and females, however, in MG the best EBVs for the reproductive characteristics of males and females. Principal component analysis assists in determining the characteristics that explain most of the data variation and also through the principal component 1 is a good alternative in the elaboration of selection index that can be defined considering the environmental differences.
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spelling 2019-10-18T12:49:44Z2019-10-18T12:49:44Z2019-02-25http://repositorio.ufsm.br/handle/1/18617The objective of this study was to estimate genetic parameters for the productive, reproductive and morphological characteristics of Nellore animals, to verify how the breeding values of the traits are distributed in different Brazilian states and to suggest a selection index by state/sex. The genetic parameters were estimated by uncharacteristic analysis under animal model, using the MLRM method. Estimate genetic values (EBV) of higher heritability characteristics and age at first calving were explored by principal component analysis. Participating males of performance test and grass-fed showed better EBVD400, EBVP550 and EBVPE550, however, the test participants in stable had the best VGs for the visual scores. For females the best EBVD400 were from the animals in stable, regardless of the age of weaning. In state of PR they are the best EBVP550 and EBVD400 in males and females, however, in MG the best EBVs for the reproductive characteristics of males and females. Principal component analysis assists in determining the characteristics that explain most of the data variation and also through the principal component 1 is a good alternative in the elaboration of selection index that can be defined considering the environmental differences.Objetivou-se estimar parâmetros genéticos para as características produtivas, reprodutivas e morfológicas de animais da raça Nelore, verificar como os valores genéticos estão distribuídos em diferentes estados brasileiros e sugerir um índice de seleção por estado/sexo. Os parâmetros genéticos foram estimados mediante análise unicaracterística sob modelo animal, utilizando-se o método REML. Na análise de componentes principais utilizou-se apenas os valores genéticos (VGs) das características de maior herdabilidade. Os machos participantes de prova de desempenho e mantidos a pasto apresentaram melhor VGD400, VGP550, VGPE550, enquanto os participantes de prova e estabulados tiveram os melhores VGs para os escores visuais. Para fêmeas os melhores VGD400 foram dos animais estabulados, independentemente da idade de desmame. No estado do PR estão os melhores VGP550 e VGD400 em machos e fêmeas, enquanto em MG os melhores VGs para as características reprodutivas de machos e fêmeas. A análise de componentes principais auxilia na determinação das características que explicam a maior parte da variação dos dados e, também, por meio do componente principal 1, é uma boa alternativa na elaboração de um índice de seleção, que pode ser definido considerando as diferenças ambientais.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em ZootecniaUFSMBrasilZootecniaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessDesempenho pós desmamaEscores visuaisIdade ao primeiro partoÍndice de seleçãoAge at first calvingPost-weaning performanceSelection indicesCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAAvaliação genética de bovinos da raça Nelore em diferentes condições de criaçãoGenetic evaluation of nellore breed bovine in different creation conditionsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisRorato, Paulo Roberto Nogarahttp://lattes.cnpq.br/6804416984369871Mello, Fernanda Cristina Bredahttp://lattes.cnpq.br/9702654931601290Prestes, Alan Mirandahttp://lattes.cnpq.br/5914334583507434Alves Filho, Dari Celestinohttp://lattes.cnpq.br/2140386505744337http://lattes.cnpq.br/2479211380942761Viana, Alexandra Fabielle Pereira500400000002600bb5914a5-24ef-4ddb-98d2-5e4c9314762b7c1a8cd6-4073-449b-8c7c-e99bc5623567ec315b8a-dbe9-4ab9-b15c-763bf3dc86d9c26a6629-5349-45f8-a8c6-496184109d1f870ac487-876a-4f7c-88c2-de6a35353d23reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGZOOTECNIA_2019_VIANA_ALEXANDRA.pdfDIS_PPGZOOTECNIA_2019_VIANA_ALEXANDRA.pdfDissertação de Mestradoapplication/pdf720939http://repositorio.ufsm.br/bitstream/1/18617/1/DIS_PPGZOOTECNIA_2019_VIANA_ALEXANDRA.pdfef4849a62625518b3ccbc188f21a7ce1MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
dc.title.alternative.eng.fl_str_mv Genetic evaluation of nellore breed bovine in different creation conditions
title Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
spellingShingle Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
Viana, Alexandra Fabielle Pereira
Desempenho pós desmama
Escores visuais
Idade ao primeiro parto
Índice de seleção
Age at first calving
Post-weaning performance
Selection indices
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
title_short Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
title_full Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
title_fullStr Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
title_full_unstemmed Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
title_sort Avaliação genética de bovinos da raça Nelore em diferentes condições de criação
author Viana, Alexandra Fabielle Pereira
author_facet Viana, Alexandra Fabielle Pereira
author_role author
dc.contributor.advisor1.fl_str_mv Rorato, Paulo Roberto Nogara
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/6804416984369871
dc.contributor.advisor-co1.fl_str_mv Mello, Fernanda Cristina Breda
dc.contributor.advisor-co1Lattes.fl_str_mv http://lattes.cnpq.br/9702654931601290
dc.contributor.referee1.fl_str_mv Prestes, Alan Miranda
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/5914334583507434
dc.contributor.referee2.fl_str_mv Alves Filho, Dari Celestino
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/2140386505744337
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/2479211380942761
dc.contributor.author.fl_str_mv Viana, Alexandra Fabielle Pereira
contributor_str_mv Rorato, Paulo Roberto Nogara
Mello, Fernanda Cristina Breda
Prestes, Alan Miranda
Alves Filho, Dari Celestino
dc.subject.por.fl_str_mv Desempenho pós desmama
Escores visuais
Idade ao primeiro parto
Índice de seleção
topic Desempenho pós desmama
Escores visuais
Idade ao primeiro parto
Índice de seleção
Age at first calving
Post-weaning performance
Selection indices
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
dc.subject.eng.fl_str_mv Age at first calving
Post-weaning performance
Selection indices
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
description The objective of this study was to estimate genetic parameters for the productive, reproductive and morphological characteristics of Nellore animals, to verify how the breeding values of the traits are distributed in different Brazilian states and to suggest a selection index by state/sex. The genetic parameters were estimated by uncharacteristic analysis under animal model, using the MLRM method. Estimate genetic values (EBV) of higher heritability characteristics and age at first calving were explored by principal component analysis. Participating males of performance test and grass-fed showed better EBVD400, EBVP550 and EBVPE550, however, the test participants in stable had the best VGs for the visual scores. For females the best EBVD400 were from the animals in stable, regardless of the age of weaning. In state of PR they are the best EBVP550 and EBVD400 in males and females, however, in MG the best EBVs for the reproductive characteristics of males and females. Principal component analysis assists in determining the characteristics that explain most of the data variation and also through the principal component 1 is a good alternative in the elaboration of selection index that can be defined considering the environmental differences.
publishDate 2019
dc.date.accessioned.fl_str_mv 2019-10-18T12:49:44Z
dc.date.available.fl_str_mv 2019-10-18T12:49:44Z
dc.date.issued.fl_str_mv 2019-02-25
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/18617
url http://repositorio.ufsm.br/handle/1/18617
dc.language.iso.fl_str_mv por
language por
dc.relation.cnpq.fl_str_mv 500400000002
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dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
Centro de Ciências Rurais
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Zootecnia
dc.publisher.initials.fl_str_mv UFSM
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Zootecnia
publisher.none.fl_str_mv Universidade Federal de Santa Maria
Centro de Ciências Rurais
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
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instname_str Universidade Federal de Santa Maria (UFSM)
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institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
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