GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE

Detalhes bibliográficos
Autor(a) principal: César de Souza, Julio
Data de Publicação: 2018
Outros Autores: José Parisi da Fonseca, Fabrício, Campos da Silva, Luiz Otávio, Moreira da Silva de Arruda, Rosana, Gondo, Andrea, Antonio de Freitas, José
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência animal brasileira (Online)
Texto Completo: https://revistas.ufg.br/vet/article/view/e-25316
Resumo: The Midwest region has excelled as a beef producer and producing efficiently has been the goal of livestock farmers. This study aimed to estimate the genetic parameters and trends for weights at 240(W240) and 420(W420) days of age in Nellore cattle, reared in Goias state, Brazil. A total of 48,580 data for W240 and 28,685 for W420 were used. Genetic parameters were obtained by univariate analysis. The model included the fixed effects of contemporary group (birth season-dry and wet-, year of birth, sex and farm) and covariate age of cow. Direct and maternal effects were used as random effect for W240 and the direct effect for W420. The genetic trends were obtained by regression analysis of the genetic value of the animal on the year of birth. The results of direct heritability were 0.15 ± 0.02 for W240 and 0.24 ± 0.00 for W420. The annual genetic gain was 0.311 kg for W240 and 0.511 kg for 420 days of age (W420). The results indicate the possibility of obtaining higher genetic gains through selection; however, the selection is being more efficient at W420.Keywords: genetic gain; heritability; weight.
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spelling GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLEParâmetros e tendências genéticas para características produtivas de bovinos da raça neloreAnimal BehaviorGanho genéticoHerdabilidadePesoThe Midwest region has excelled as a beef producer and producing efficiently has been the goal of livestock farmers. This study aimed to estimate the genetic parameters and trends for weights at 240(W240) and 420(W420) days of age in Nellore cattle, reared in Goias state, Brazil. A total of 48,580 data for W240 and 28,685 for W420 were used. Genetic parameters were obtained by univariate analysis. The model included the fixed effects of contemporary group (birth season-dry and wet-, year of birth, sex and farm) and covariate age of cow. Direct and maternal effects were used as random effect for W240 and the direct effect for W420. The genetic trends were obtained by regression analysis of the genetic value of the animal on the year of birth. The results of direct heritability were 0.15 ± 0.02 for W240 and 0.24 ± 0.00 for W420. The annual genetic gain was 0.311 kg for W240 and 0.511 kg for 420 days of age (W420). The results indicate the possibility of obtaining higher genetic gains through selection; however, the selection is being more efficient at W420.Keywords: genetic gain; heritability; weight.A região Centro-Oeste tem se destacado como produtora de carne bovina e, para tanto, produzir com eficiência tem sido a meta dos produtores. Nesse sentido, objetivou-se estimar parâmetros e tendências genéticas para pesos aos 240 (P240) e 420 (P420) dias de idade em bovinos da raça Nelore, criados na região de Goiás, Brasil. Utilizaram-se 48.580 dados para P240 e 28.685 para P420. Os parâmetros genéticos foram obtidos por análises univariadas em que o modelo continha os efeitos fixos de grupo de contemporâneos (estação de nascimento - águas e seca -, ano de nascimento, sexo e fazenda) e a covariável idade da vaca. Como efeito aleatório, utilizou-se o efeito aditivo direto e materno para P240 e apenas direto para P420. As tendências genéticas foram obtidas por meio da análise de regressão do valor genético do animal sobre ano de nascimento. Os resultados obtidos de herdabilidade direta foram 0,15 ± 0,02 para P240 e 0,24 ± 0,00 para P420. O ganho genético anual foi de 0,274 kg para P240 e de 0,506 kg P420. Os resultados indicam a possibilidade de se obterem maiores ganhos genéticos por meio da seleção, que está sendo mais eficiente sobre o P420.Universidade Federal de Goiás2018-07-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa CientíficaResearchapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/e-2531610.1590/cab19025316Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 19 (2018): Continuous publication; 1-8Ciência Animal Brasileira / Brazilian Animal Science; v. 19 (2018): Publicação contínua; 1-81809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/e-25316/25776https://revistas.ufg.br/vet/article/view/e-25316/25777César de Souza, JulioJosé Parisi da Fonseca, FabrícioCampos da Silva, Luiz OtávioMoreira da Silva de Arruda, RosanaGondo, AndreaAntonio de Freitas, Joséinfo:eu-repo/semantics/openAccess2023-03-23T18:50:39Zoai:ojs.revistas.ufg.br:article/25316Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:56:00.559781Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
Parâmetros e tendências genéticas para características produtivas de bovinos da raça nelore
title GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
spellingShingle GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
César de Souza, Julio
Animal Behavior
Ganho genético
Herdabilidade
Peso
title_short GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
title_full GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
title_fullStr GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
title_full_unstemmed GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
title_sort GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
author César de Souza, Julio
author_facet César de Souza, Julio
José Parisi da Fonseca, Fabrício
Campos da Silva, Luiz Otávio
Moreira da Silva de Arruda, Rosana
Gondo, Andrea
Antonio de Freitas, José
author_role author
author2 José Parisi da Fonseca, Fabrício
Campos da Silva, Luiz Otávio
Moreira da Silva de Arruda, Rosana
Gondo, Andrea
Antonio de Freitas, José
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv César de Souza, Julio
José Parisi da Fonseca, Fabrício
Campos da Silva, Luiz Otávio
Moreira da Silva de Arruda, Rosana
Gondo, Andrea
Antonio de Freitas, José
dc.subject.por.fl_str_mv Animal Behavior
Ganho genético
Herdabilidade
Peso
topic Animal Behavior
Ganho genético
Herdabilidade
Peso
description The Midwest region has excelled as a beef producer and producing efficiently has been the goal of livestock farmers. This study aimed to estimate the genetic parameters and trends for weights at 240(W240) and 420(W420) days of age in Nellore cattle, reared in Goias state, Brazil. A total of 48,580 data for W240 and 28,685 for W420 were used. Genetic parameters were obtained by univariate analysis. The model included the fixed effects of contemporary group (birth season-dry and wet-, year of birth, sex and farm) and covariate age of cow. Direct and maternal effects were used as random effect for W240 and the direct effect for W420. The genetic trends were obtained by regression analysis of the genetic value of the animal on the year of birth. The results of direct heritability were 0.15 ± 0.02 for W240 and 0.24 ± 0.00 for W420. The annual genetic gain was 0.311 kg for W240 and 0.511 kg for 420 days of age (W420). The results indicate the possibility of obtaining higher genetic gains through selection; however, the selection is being more efficient at W420.Keywords: genetic gain; heritability; weight.
publishDate 2018
dc.date.none.fl_str_mv 2018-07-04
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Científica
Research
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/vet/article/view/e-25316
10.1590/cab19025316
url https://revistas.ufg.br/vet/article/view/e-25316
identifier_str_mv 10.1590/cab19025316
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/vet/article/view/e-25316/25776
https://revistas.ufg.br/vet/article/view/e-25316/25777
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
text/html
dc.publisher.none.fl_str_mv Universidade Federal de Goiás
publisher.none.fl_str_mv Universidade Federal de Goiás
dc.source.none.fl_str_mv Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 19 (2018): Continuous publication; 1-8
Ciência Animal Brasileira / Brazilian Animal Science; v. 19 (2018): Publicação contínua; 1-8
1809-6891
1518-2797
reponame:Ciência animal brasileira (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Ciência animal brasileira (Online)
collection Ciência animal brasileira (Online)
repository.name.fl_str_mv Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv ||revistacab@gmail.com
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