Genetic diversity of Brazilian Brahman cattle by pedigree analysis

Detalhes bibliográficos
Autor(a) principal: Cavani, Ligia
Data de Publicação: 2018
Outros Autores: Silva, Rafael Medeiros de Oliveira, Carreño, Luis Orlando Duitama, Ono, Rafael Keith, Bertipaglia, Tássia Souza, Farah, Michel Marques, Millen, Danilo Domingues, da Fonseca, Ricardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/25118
Resumo: The objective of this work was to evaluate the genetic diversity of Brahman cattle in Brazil with pedigree analysis. Genealogical records of a subpopulation were used considering all pedigree information (Pt) and the pedigree information divided into two periods (P1, from 1994 to 2004; and P2, from 2005 to 2012) or according to the raising system (Ppt, animals on pasture; or Pst, on stable). Estimates were obtained for average inbreeding coefficients, generation intervals (GI), number of equivalent known generation (CGE), number of founders (Nf), effective number of founders (fe), effective number of ancestors (fa), and founder genome equivalents (fg). The average inbreeding coefficients were 11.97, 7.79, 11.95, 11.74, and 11.31% for Pt, P1, P2, Ppt, and Pst, respectively. Average GI was 4.4 years, whereas CGE was 3.18. The fe values were similar to those of fa, which were greater than those of fg. The fe/fa and fg/fe ratios were close to 1, which indicates no genetic bottleneck and small losses by genetic drift. The genetic diversity in the Brazilian population of Brahman breed is not significantly reduced.
id EMBRAPA-4_85d770a531a9ab940771f155b96b6454
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/25118
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Genetic diversity of Brazilian Brahman cattle by pedigree analysisDiversidade genética de bovinos Brahman no Brasil por meio da análise de pedigreebeef cattle; founders; genetic bottleneck; inbreedingbovino de corte; fundadores; gargalo genético; endogamiaThe objective of this work was to evaluate the genetic diversity of Brahman cattle in Brazil with pedigree analysis. Genealogical records of a subpopulation were used considering all pedigree information (Pt) and the pedigree information divided into two periods (P1, from 1994 to 2004; and P2, from 2005 to 2012) or according to the raising system (Ppt, animals on pasture; or Pst, on stable). Estimates were obtained for average inbreeding coefficients, generation intervals (GI), number of equivalent known generation (CGE), number of founders (Nf), effective number of founders (fe), effective number of ancestors (fa), and founder genome equivalents (fg). The average inbreeding coefficients were 11.97, 7.79, 11.95, 11.74, and 11.31% for Pt, P1, P2, Ppt, and Pst, respectively. Average GI was 4.4 years, whereas CGE was 3.18. The fe values were similar to those of fa, which were greater than those of fg. The fe/fa and fg/fe ratios were close to 1, which indicates no genetic bottleneck and small losses by genetic drift. The genetic diversity in the Brazilian population of Brahman breed is not significantly reduced.O objetivo deste trabalho foi avaliar a diversidade genética de bovinos da raça Brahman no Brasil com análise de pedigree. Registros genealógicos de uma subpopulação foram usados, tendo-se considerado toda a informação de pedigree (Pt) e a informação de pedigree dividida em dois períodos (P1, de 1994 a 2004; e P2, de 2005 a 2012) ou de acordo com sistema de criação (Ppt, animais a pasto; ou Pst, estabulados). Foram obtidas as estimativas de coeficientes médios de endogamia, intervalos de geração (IG), número equivalente de gerações conhecidas (EGC), número de fundadores (Nf), número efetivo de fundadores (fe), número efetivo de ancestrais (fa) e número efetivo de genomas remanescentes (fg). Os coeficientes médios de endogamia foram de 11,97, 7,79, 11,95, 11,74 e 11,31% para Pt, P1, P2, Ppt e Pst, respectivamente. O IG médio foi de 4,4 anos, enquanto o EGC médio foi de 3,18. O fe foi próximo de fa, cujos valores foram maiores que os de fg. As razões fe/fa e fg/fe foram próximas de 1, o que indica ausência de gargalo genético e pequenas perdas por deriva genética. A diversidade genética na raça Brahman no Brasil não está significativamente reduzida.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp)Associação Brasileira de Criadores de Zebu (ABCZ)Cavani, LigiaSilva, Rafael Medeiros de OliveiraCarreño, Luis Orlando DuitamaOno, Rafael KeithBertipaglia, Tássia SouzaFarah, Michel MarquesMillen, Danilo Dominguesda Fonseca, Ricardo2018-02-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/25118Pesquisa Agropecuaria Brasileira; v.53, n.1, jan. 2018; 74-79Pesquisa Agropecuária Brasileira; v.53, n.1, jan. 2018; 74-791678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/25118/14107https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25118/16918Direitos autorais 2018 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2018-02-22T15:18:51Zoai:ojs.seer.sct.embrapa.br:article/25118Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2018-02-22T15:18:51Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Genetic diversity of Brazilian Brahman cattle by pedigree analysis
Diversidade genética de bovinos Brahman no Brasil por meio da análise de pedigree
title Genetic diversity of Brazilian Brahman cattle by pedigree analysis
spellingShingle Genetic diversity of Brazilian Brahman cattle by pedigree analysis
Cavani, Ligia
beef cattle; founders; genetic bottleneck; inbreeding
bovino de corte; fundadores; gargalo genético; endogamia
title_short Genetic diversity of Brazilian Brahman cattle by pedigree analysis
title_full Genetic diversity of Brazilian Brahman cattle by pedigree analysis
title_fullStr Genetic diversity of Brazilian Brahman cattle by pedigree analysis
title_full_unstemmed Genetic diversity of Brazilian Brahman cattle by pedigree analysis
title_sort Genetic diversity of Brazilian Brahman cattle by pedigree analysis
author Cavani, Ligia
author_facet Cavani, Ligia
Silva, Rafael Medeiros de Oliveira
Carreño, Luis Orlando Duitama
Ono, Rafael Keith
Bertipaglia, Tássia Souza
Farah, Michel Marques
Millen, Danilo Domingues
da Fonseca, Ricardo
author_role author
author2 Silva, Rafael Medeiros de Oliveira
Carreño, Luis Orlando Duitama
Ono, Rafael Keith
Bertipaglia, Tássia Souza
Farah, Michel Marques
Millen, Danilo Domingues
da Fonseca, Ricardo
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv
Fundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp)
Associação Brasileira de Criadores de Zebu (ABCZ)
dc.contributor.author.fl_str_mv Cavani, Ligia
Silva, Rafael Medeiros de Oliveira
Carreño, Luis Orlando Duitama
Ono, Rafael Keith
Bertipaglia, Tássia Souza
Farah, Michel Marques
Millen, Danilo Domingues
da Fonseca, Ricardo
dc.subject.por.fl_str_mv beef cattle; founders; genetic bottleneck; inbreeding
bovino de corte; fundadores; gargalo genético; endogamia
topic beef cattle; founders; genetic bottleneck; inbreeding
bovino de corte; fundadores; gargalo genético; endogamia
description The objective of this work was to evaluate the genetic diversity of Brahman cattle in Brazil with pedigree analysis. Genealogical records of a subpopulation were used considering all pedigree information (Pt) and the pedigree information divided into two periods (P1, from 1994 to 2004; and P2, from 2005 to 2012) or according to the raising system (Ppt, animals on pasture; or Pst, on stable). Estimates were obtained for average inbreeding coefficients, generation intervals (GI), number of equivalent known generation (CGE), number of founders (Nf), effective number of founders (fe), effective number of ancestors (fa), and founder genome equivalents (fg). The average inbreeding coefficients were 11.97, 7.79, 11.95, 11.74, and 11.31% for Pt, P1, P2, Ppt, and Pst, respectively. Average GI was 4.4 years, whereas CGE was 3.18. The fe values were similar to those of fa, which were greater than those of fg. The fe/fa and fg/fe ratios were close to 1, which indicates no genetic bottleneck and small losses by genetic drift. The genetic diversity in the Brazilian population of Brahman breed is not significantly reduced.
publishDate 2018
dc.date.none.fl_str_mv 2018-02-16
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/25118
url https://seer.sct.embrapa.br/index.php/pab/article/view/25118
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/25118/14107
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25118/16918
dc.rights.driver.fl_str_mv Direitos autorais 2018 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2018 Pesquisa Agropecuária Brasileira
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.53, n.1, jan. 2018; 74-79
Pesquisa Agropecuária Brasileira; v.53, n.1, jan. 2018; 74-79
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
_version_ 1793416683901157376

Registros relacionados