Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista de Ciências Agrárias (Belém. Online) |
Texto Completo: | https://ajaes.ufra.edu.br/index.php/ajaes/article/view/71 |
Resumo: | Abstract: We estimated the heritability and genetic correlation for milk production in first lactation (PL) and age at first calving (AFC) of animals of Brown Swiss breed. Records of 2,981 parities, calving between 1980 and 2002 In the estimation of the components of (co) variance were used Bayesian inference was used by the Gibbs sampler, with chain size of 1,500,000 rounds and burning period of 500,000 rounds. The sampling frequency was 500 rounds. Estimated for milk yield and age at first calving means were equal to 5347.47 ± 1849.13 kg and 29.65 ± 4.51 months, respectively. The heritability estimates for milk yield and age at first calving were equal to 0.23 and 0.18, respectively. The genetic correlation between them was equal to -0.31. Heritability estimates for the traits evaluated satisfactory performance indicate that genetic gains can be made in breeding for these characteristics and that simultaneous selection for both traits can be performed. |
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Revista de Ciências Agrárias (Belém. Online) |
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Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inferenceEstimação de parâmetros genéticos da produção leiteira e idade ao primeiro parto de vacas Pardo-Suíças por meio de inferência bayesianaAbstract: We estimated the heritability and genetic correlation for milk production in first lactation (PL) and age at first calving (AFC) of animals of Brown Swiss breed. Records of 2,981 parities, calving between 1980 and 2002 In the estimation of the components of (co) variance were used Bayesian inference was used by the Gibbs sampler, with chain size of 1,500,000 rounds and burning period of 500,000 rounds. The sampling frequency was 500 rounds. Estimated for milk yield and age at first calving means were equal to 5347.47 ± 1849.13 kg and 29.65 ± 4.51 months, respectively. The heritability estimates for milk yield and age at first calving were equal to 0.23 and 0.18, respectively. The genetic correlation between them was equal to -0.31. Heritability estimates for the traits evaluated satisfactory performance indicate that genetic gains can be made in breeding for these characteristics and that simultaneous selection for both traits can be performed.Resumo: Estimou-se a herdabilidade e a correlação genética para a produção de leite na primeira lactação (PL) e idade ao primeiro parto (IPP) de animais da raça Pardo-Suíça. Foram utilizados registros de 2.981 lactações, com partos ocorridos entre os anos de 1980 a 2002. Na estimação dos componentes de (co) variâncias foi utilizada a inferência Bayesiana, por meio de amostrador de Gibbs, com tamanho de cadeia de 1.500.000 rounds e período de queima de 500.000 rounds. A freqüência de amostragem foi de 500 rounds. As médias estimadas para produção de leite e idade ao primeiro parto foram iguais a 5.347,47±1.849,13 kg e 29,65±4,51 meses, respectivamente. As estimativas de herdabilidade obtidas para a produção de leite e idade ao primeiro parto foram iguais a 0,23 e 0,18, respectivamente. A correlação genética entre elas foi igual a -0,31. As herdabilidades obtidas para as características de desempenho avaliadas indicam que ganhos genéticos satisfatórios podem ser obtidos no melhoramento para essas características e que a seleção simultânea para ambas as características pode ser realizada. Universidade Federal Rural da Amazônia/UFRA2011-03-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/71Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 53 No 1 (2010): RCA; 59-63Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 53 n. 1 (2010): RCA; 59-632177-87601517-591Xreponame:Revista de Ciências Agrárias (Belém. Online)instname:Universidade Federal Rural da Amazônia (UFRA)instacron:UFRAporhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/71/38Brcko, Carolina CarvalhoAraújo, Cláudio Vieira deAraújo, Simone InoeRenno, Francisco PalmaMarcondes, Cintia Righettiinfo:eu-repo/semantics/openAccess2018-12-18T19:11:28Zoai:ojs.www.periodicos.ufra.edu.br:article/71Revistahttps://ajaes.ufra.edu.br/index.php/ajaes/PUBhttps://ajaes.ufra.edu.br/index.php/ajaes/oaiallan.lobato@ufra.edu.br || ajaes.suporte@gmail.com2177-87601517-591Xopendoar:2018-12-18T19:11:28Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)false |
dc.title.none.fl_str_mv |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference Estimação de parâmetros genéticos da produção leiteira e idade ao primeiro parto de vacas Pardo-Suíças por meio de inferência bayesiana |
title |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
spellingShingle |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference Brcko, Carolina Carvalho |
title_short |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
title_full |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
title_fullStr |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
title_full_unstemmed |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
title_sort |
Estimation of genetic parameters of milk production and age at first calving cows Pardo-Swiss via Bayesian inference |
author |
Brcko, Carolina Carvalho |
author_facet |
Brcko, Carolina Carvalho Araújo, Cláudio Vieira de Araújo, Simone Inoe Renno, Francisco Palma Marcondes, Cintia Righetti |
author_role |
author |
author2 |
Araújo, Cláudio Vieira de Araújo, Simone Inoe Renno, Francisco Palma Marcondes, Cintia Righetti |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Brcko, Carolina Carvalho Araújo, Cláudio Vieira de Araújo, Simone Inoe Renno, Francisco Palma Marcondes, Cintia Righetti |
description |
Abstract: We estimated the heritability and genetic correlation for milk production in first lactation (PL) and age at first calving (AFC) of animals of Brown Swiss breed. Records of 2,981 parities, calving between 1980 and 2002 In the estimation of the components of (co) variance were used Bayesian inference was used by the Gibbs sampler, with chain size of 1,500,000 rounds and burning period of 500,000 rounds. The sampling frequency was 500 rounds. Estimated for milk yield and age at first calving means were equal to 5347.47 ± 1849.13 kg and 29.65 ± 4.51 months, respectively. The heritability estimates for milk yield and age at first calving were equal to 0.23 and 0.18, respectively. The genetic correlation between them was equal to -0.31. Heritability estimates for the traits evaluated satisfactory performance indicate that genetic gains can be made in breeding for these characteristics and that simultaneous selection for both traits can be performed. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-03-12 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/71 |
url |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/71 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/71/38 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
dc.source.none.fl_str_mv |
Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 53 No 1 (2010): RCA; 59-63 Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 53 n. 1 (2010): RCA; 59-63 2177-8760 1517-591X reponame:Revista de Ciências Agrárias (Belém. Online) instname:Universidade Federal Rural da Amazônia (UFRA) instacron:UFRA |
instname_str |
Universidade Federal Rural da Amazônia (UFRA) |
instacron_str |
UFRA |
institution |
UFRA |
reponame_str |
Revista de Ciências Agrárias (Belém. Online) |
collection |
Revista de Ciências Agrárias (Belém. Online) |
repository.name.fl_str_mv |
Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA) |
repository.mail.fl_str_mv |
allan.lobato@ufra.edu.br || ajaes.suporte@gmail.com |
_version_ |
1797231625976676352 |