Escores visuais e associação com características de crescimento em bovinos da raça Angus
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/4333 |
Resumo: | The objective of this study was to estimate the (co) variances and genetic associations between the visual scores of conformation and precocity at weaning and at yearling, respectively WC, WP and YC, YP with the characteristics of average daily gain (BWG: from birth to weaning and WYG: from weaning to yearling) and rate of weight gain (BWR: from birth to weaning and BYR: from weaning to yearling) for Angus cattle. The (co)variances components were estimated by multi-traits analysis using an animal model by Bayesian Inference Method, assuming a linear model for average daily gain and for rate of weight gain and a non-linear (threshold) for WC, WP, YC and YP. The a posteriori means for direct heritability were 0.12 (WC), 0.17 (WP), 0.15 (BWG and BWR), 0.17 (YC), 0.19 (YP) and 0.16 (WYG and BYR). The genetic correlation between the weaning and yearling scores with the direct effect for the average daily gain and rate of weight gain traits ranged from -0.05 to 0.60 for conformation and -0.15 to 0.60 for precocity; the genetic correlation of the scores with average daily gain and rate of weight gain presented similar behavior. Therefore, correlated response of equal magnitude is expected for scores, if the selection was directed to average daily gain or rate of weight gain. |
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Escores visuais e associação com características de crescimento em bovinos da raça AngusVisual scores and association with characteristics of growth in cattle AngusAmostragem de gibbsCaracterísticas produtivasGado de corteMétodo de Monte CarloBeef cattleGibbs samplingMonte Carlo methodProduction traitsCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAThe objective of this study was to estimate the (co) variances and genetic associations between the visual scores of conformation and precocity at weaning and at yearling, respectively WC, WP and YC, YP with the characteristics of average daily gain (BWG: from birth to weaning and WYG: from weaning to yearling) and rate of weight gain (BWR: from birth to weaning and BYR: from weaning to yearling) for Angus cattle. The (co)variances components were estimated by multi-traits analysis using an animal model by Bayesian Inference Method, assuming a linear model for average daily gain and for rate of weight gain and a non-linear (threshold) for WC, WP, YC and YP. The a posteriori means for direct heritability were 0.12 (WC), 0.17 (WP), 0.15 (BWG and BWR), 0.17 (YC), 0.19 (YP) and 0.16 (WYG and BYR). The genetic correlation between the weaning and yearling scores with the direct effect for the average daily gain and rate of weight gain traits ranged from -0.05 to 0.60 for conformation and -0.15 to 0.60 for precocity; the genetic correlation of the scores with average daily gain and rate of weight gain presented similar behavior. Therefore, correlated response of equal magnitude is expected for scores, if the selection was directed to average daily gain or rate of weight gain.Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorO objetivo deste estudo foi estimar as (co)variâncias e as associações genéticas entre os escores visuais de conformação e precocidade à desmama ao sobreano, respectivamente CD, PrD e CS, PrS, com as características de ganho médio diário de peso (GMD: do nascimento à desmama; GMS: da desmama ao sobreano) e velocidade de ganho de peso (VD: do nascimento à desmama e VS: da desmama ao sobreano) para bovinos da raça Angus. Os componentes de (co)variâncias foram estimados por um modelo animal tetra-característica usando o Método de Inferência Bayesiana, assumindo um modelo linear para o ganho médio diário e velocidade de ganho de peso e um modelo não-linear (de limiar) para CD, CS, PrD e PrS. As médias a posteriori para a herdabilidade direta foram: 0,12 (CD); 0,17 (PrD); 0,15 (GMD e VD); 0,17 (CS); 0,19 (PrS) e 0,16 (GMS e VS). As correlações genéticas estimadas entre os escores à desmana e ao sobreano com o efeito direto para as caracteristicas de crescimento variaram de -0,05 a 0,60 para conformação e de -0,15 a 0,60 para precocidade; a correlação genética dos escores com ganho médio diário ou com velocidade de ganho de peso apresentou comportamento semelhante. Portanto, resposta correlacionada de igual magnitude é esperada para os escores, se a selação for direcionada para ganho médio diario de peso ou velocidade de ganho de peso.Universidade Federal de Santa MariaBRZootecniaUFSMPrograma de Pós-Graduação em ZootecniaRorato, Paulo Roberto Nogarahttp://lattes.cnpq.br/6804416984369871Mello, Fernanda Cristina Bredahttp://lattes.cnpq.br/9702654931601290Boligon, Arione Augustihttp://lattes.cnpq.br/5203662694720338Cobuci, Jaime Araujohttp://lattes.cnpq.br/2682793411821068Pacheco, Paulo Santanahttp://lattes.cnpq.br/9700645244479913Everling, Dionéia Magda2017-06-142017-06-142012-02-27info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfapplication/pdfEVERLING, Dionéia Magda. Visual scores and association with characteristics of growth in cattle Angus. 2012. 79 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2012.http://repositorio.ufsm.br/handle/1/4333porinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2022-08-11T15:47:05Zoai:repositorio.ufsm.br:1/4333Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-08-11T15:47:05Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Escores visuais e associação com características de crescimento em bovinos da raça Angus Visual scores and association with characteristics of growth in cattle Angus |
title |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
spellingShingle |
Escores visuais e associação com características de crescimento em bovinos da raça Angus Everling, Dionéia Magda Amostragem de gibbs Características produtivas Gado de corte Método de Monte Carlo Beef cattle Gibbs sampling Monte Carlo method Production traits CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
title_full |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
title_fullStr |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
title_full_unstemmed |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
title_sort |
Escores visuais e associação com características de crescimento em bovinos da raça Angus |
author |
Everling, Dionéia Magda |
author_facet |
Everling, Dionéia Magda |
author_role |
author |
dc.contributor.none.fl_str_mv |
Rorato, Paulo Roberto Nogara http://lattes.cnpq.br/6804416984369871 Mello, Fernanda Cristina Breda http://lattes.cnpq.br/9702654931601290 Boligon, Arione Augusti http://lattes.cnpq.br/5203662694720338 Cobuci, Jaime Araujo http://lattes.cnpq.br/2682793411821068 Pacheco, Paulo Santana http://lattes.cnpq.br/9700645244479913 |
dc.contributor.author.fl_str_mv |
Everling, Dionéia Magda |
dc.subject.por.fl_str_mv |
Amostragem de gibbs Características produtivas Gado de corte Método de Monte Carlo Beef cattle Gibbs sampling Monte Carlo method Production traits CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
topic |
Amostragem de gibbs Características produtivas Gado de corte Método de Monte Carlo Beef cattle Gibbs sampling Monte Carlo method Production traits CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The objective of this study was to estimate the (co) variances and genetic associations between the visual scores of conformation and precocity at weaning and at yearling, respectively WC, WP and YC, YP with the characteristics of average daily gain (BWG: from birth to weaning and WYG: from weaning to yearling) and rate of weight gain (BWR: from birth to weaning and BYR: from weaning to yearling) for Angus cattle. The (co)variances components were estimated by multi-traits analysis using an animal model by Bayesian Inference Method, assuming a linear model for average daily gain and for rate of weight gain and a non-linear (threshold) for WC, WP, YC and YP. The a posteriori means for direct heritability were 0.12 (WC), 0.17 (WP), 0.15 (BWG and BWR), 0.17 (YC), 0.19 (YP) and 0.16 (WYG and BYR). The genetic correlation between the weaning and yearling scores with the direct effect for the average daily gain and rate of weight gain traits ranged from -0.05 to 0.60 for conformation and -0.15 to 0.60 for precocity; the genetic correlation of the scores with average daily gain and rate of weight gain presented similar behavior. Therefore, correlated response of equal magnitude is expected for scores, if the selection was directed to average daily gain or rate of weight gain. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02-27 2017-06-14 2017-06-14 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
EVERLING, Dionéia Magda. Visual scores and association with characteristics of growth in cattle Angus. 2012. 79 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/4333 |
identifier_str_mv |
EVERLING, Dionéia Magda. Visual scores and association with characteristics of growth in cattle Angus. 2012. 79 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2012. |
url |
http://repositorio.ufsm.br/handle/1/4333 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Zootecnia UFSM Programa de Pós-Graduação em Zootecnia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Zootecnia UFSM Programa de Pós-Graduação em Zootecnia |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
_version_ |
1805922122196844544 |