Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis

Detalhes bibliográficos
Autor(a) principal: de Faria, Lydio Cosac
Data de Publicação: 2011
Outros Autores: de Queiroz, Sandra Aidar, Vozzi, Pedro Alejandro, Lôbo, Raysildo Barbosa, Magnabosco, Cláudio de Ulhôa, de Oliveira, João Ademir
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/8373
Resumo: This work aimed to analyse the genetic variability of Brahman breed in Brazil, through the analysis of 15,851 pedigrees. The data file was divided into two periods: 1998–2001 and 2002–2005. The genetic variability was evaluated by the following parameters, based on the probability of gene origin: number of ancestors, effective number of founders, effective number of remaining genomes, and the relationship and inbreeding coefficients. The values for the number of founders showed that the population is expanding, although the effective number of founders has been reduced from one period to the other. The results were different for the number of ancestors and the remaining genomes, which grew by 23% in the studied periods. The inbreeding coefficient decreased in the studied periods, but the "inter se" relationship coefficient increased. Few ancestors showed great genetic contribution to the population, which indicates the use of small number of individuals in the reproduction. Brahman breed population in Brazil is expanding, characterized by the decreasing of the inbreeding coefficients and the increasing of the effective number of ancestors and remaining genotypes. Nevertheless, the breed genetic variability shows increasing "inter se" relationships and a great concentration of gene heritage of few individuals in the population.
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spelling Genetic variability detection in Brahman cattle in Brazil trough pedigree analysisVariabilidade genética da raça Brahman no Brasil detectada por meio de análise de pedigreerelationship coefficient; inbreeding; effective number of ancestors; effective number of founders; effective number of remaining genomescoeficiente de parentesco; endogamia; número efetivo de ancestrais; número efetivo de fundadores; número efetivo de genomas remanescentesThis work aimed to analyse the genetic variability of Brahman breed in Brazil, through the analysis of 15,851 pedigrees. The data file was divided into two periods: 1998–2001 and 2002–2005. The genetic variability was evaluated by the following parameters, based on the probability of gene origin: number of ancestors, effective number of founders, effective number of remaining genomes, and the relationship and inbreeding coefficients. The values for the number of founders showed that the population is expanding, although the effective number of founders has been reduced from one period to the other. The results were different for the number of ancestors and the remaining genomes, which grew by 23% in the studied periods. The inbreeding coefficient decreased in the studied periods, but the "inter se" relationship coefficient increased. Few ancestors showed great genetic contribution to the population, which indicates the use of small number of individuals in the reproduction. Brahman breed population in Brazil is expanding, characterized by the decreasing of the inbreeding coefficients and the increasing of the effective number of ancestors and remaining genotypes. Nevertheless, the breed genetic variability shows increasing "inter se" relationships and a great concentration of gene heritage of few individuals in the population.O objetivo deste trabalho foi analisar a variabilidade genética da raça Brahman no Brasil, por meio da análise de 15.851 pedigrees. O arquivo de dados foi dividido em dois períodos: 1998–2001 e 2002–2005. A variabilidade genética foi avaliada por parâmetros baseados na probabilidade de origem do gene: número efetivo de ancestrais, número efetivo de fundadores, número efetivo de genomas remanescentes e coeficientes de parentesco e de endogamia. Os valores encontrados quanto ao número de fundadores mostraram que a população está em expansão, embora o número efetivo de fundadores tenha diminuído de um período para outro. Os resultados foram diferentes em relação ao número de ancestrais e genomas remanescentes, que apresentaram crescimento de 23% nos períodos avaliados. O coeficiente de endogamia diminuiu nos períodos estudados, porém o coeficiente de parentesco "inter se" cresceu. Poucos ancestrais apresentaram grande contribuição genética para a população, o que evidencia a utilização de poucos indivíduos na reprodução. A raça Brahman, no Brasil, encontra-se em expansão, caracterizada pela diminuição do coeficiente de endogamia e aumento nos números efetivos de fundadores e de genótipos remanescentes. Entretanto, a variabilidade genética da raça mostra aumento do parentesco "inter se" e grande concentração do patrimônio genético de poucos indivíduos na população. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirade Faria, Lydio Cosacde Queiroz, Sandra AidarVozzi, Pedro AlejandroLôbo, Raysildo BarbosaMagnabosco, Cláudio de Ulhôade Oliveira, João Ademir2011-01-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/8373Pesquisa Agropecuaria Brasileira; v.45, n.10, out. 2010; 1133-1140Pesquisa Agropecuária Brasileira; v.45, n.10, out. 2010; 1133-11401678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/8373/6120info:eu-repo/semantics/openAccess2014-11-12T15:48:26Zoai:ojs.seer.sct.embrapa.br:article/8373Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-11-12T15:48:26Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
Variabilidade genética da raça Brahman no Brasil detectada por meio de análise de pedigree
title Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
spellingShingle Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
de Faria, Lydio Cosac
relationship coefficient; inbreeding; effective number of ancestors; effective number of founders; effective number of remaining genomes
coeficiente de parentesco; endogamia; número efetivo de ancestrais; número efetivo de fundadores; número efetivo de genomas remanescentes
title_short Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
title_full Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
title_fullStr Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
title_full_unstemmed Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
title_sort Genetic variability detection in Brahman cattle in Brazil trough pedigree analysis
author de Faria, Lydio Cosac
author_facet de Faria, Lydio Cosac
de Queiroz, Sandra Aidar
Vozzi, Pedro Alejandro
Lôbo, Raysildo Barbosa
Magnabosco, Cláudio de Ulhôa
de Oliveira, João Ademir
author_role author
author2 de Queiroz, Sandra Aidar
Vozzi, Pedro Alejandro
Lôbo, Raysildo Barbosa
Magnabosco, Cláudio de Ulhôa
de Oliveira, João Ademir
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv de Faria, Lydio Cosac
de Queiroz, Sandra Aidar
Vozzi, Pedro Alejandro
Lôbo, Raysildo Barbosa
Magnabosco, Cláudio de Ulhôa
de Oliveira, João Ademir
dc.subject.por.fl_str_mv relationship coefficient; inbreeding; effective number of ancestors; effective number of founders; effective number of remaining genomes
coeficiente de parentesco; endogamia; número efetivo de ancestrais; número efetivo de fundadores; número efetivo de genomas remanescentes
topic relationship coefficient; inbreeding; effective number of ancestors; effective number of founders; effective number of remaining genomes
coeficiente de parentesco; endogamia; número efetivo de ancestrais; número efetivo de fundadores; número efetivo de genomas remanescentes
description This work aimed to analyse the genetic variability of Brahman breed in Brazil, through the analysis of 15,851 pedigrees. The data file was divided into two periods: 1998–2001 and 2002–2005. The genetic variability was evaluated by the following parameters, based on the probability of gene origin: number of ancestors, effective number of founders, effective number of remaining genomes, and the relationship and inbreeding coefficients. The values for the number of founders showed that the population is expanding, although the effective number of founders has been reduced from one period to the other. The results were different for the number of ancestors and the remaining genomes, which grew by 23% in the studied periods. The inbreeding coefficient decreased in the studied periods, but the "inter se" relationship coefficient increased. Few ancestors showed great genetic contribution to the population, which indicates the use of small number of individuals in the reproduction. Brahman breed population in Brazil is expanding, characterized by the decreasing of the inbreeding coefficients and the increasing of the effective number of ancestors and remaining genotypes. Nevertheless, the breed genetic variability shows increasing "inter se" relationships and a great concentration of gene heritage of few individuals in the population.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-27
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/8373
url https://seer.sct.embrapa.br/index.php/pab/article/view/8373
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/8373/6120
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.45, n.10, out. 2010; 1133-1140
Pesquisa Agropecuária Brasileira; v.45, n.10, out. 2010; 1133-1140
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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