GENETIC PARAMETER AND TREND FOR PRODUCTIVE TRAITS OF NELLORE CATTLE
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1799874788194254848 |