Population structure of Nellore cattle in northeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900005 |
Resumo: | The objective of this study was to evaluate the population genetic structure of Nellore cattle in northeastern Brazil. Pedigree information was collected from 175,231 animals born from 1967 to 2007. Probability of gene origin, inbreeding, average relatedness coefficient (AR), completeness pedigree, effective population size and generation interval were calculated. Generation interval was high due to the long period of time animals were used as reproducers. The bottleneck effect was evidenced as a result of intensive use of limited breeders over the last years. Low values were observed in the effective number of founder animals (434) and ancestors (427) comparing with the number on the base (175,231) and reference populations (130,038). Generally, the variability explained by the founders and ancestors is considered low. The average coefficient of inbreeding (0.11%) and AR (0.14%) estimated for this population is considered low and can be partly explained by the increased population effective number in recent periods; however, it may be underestimated by shallow pedigree. |
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Revista Brasileira de Zootecnia (Online) |
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Population structure of Nellore cattle in northeastern Brazileffective sizegeneration intervalsinbreedingpedigreeThe objective of this study was to evaluate the population genetic structure of Nellore cattle in northeastern Brazil. Pedigree information was collected from 175,231 animals born from 1967 to 2007. Probability of gene origin, inbreeding, average relatedness coefficient (AR), completeness pedigree, effective population size and generation interval were calculated. Generation interval was high due to the long period of time animals were used as reproducers. The bottleneck effect was evidenced as a result of intensive use of limited breeders over the last years. Low values were observed in the effective number of founder animals (434) and ancestors (427) comparing with the number on the base (175,231) and reference populations (130,038). Generally, the variability explained by the founders and ancestors is considered low. The average coefficient of inbreeding (0.11%) and AR (0.14%) estimated for this population is considered low and can be partly explained by the increased population effective number in recent periods; however, it may be underestimated by shallow pedigree.Sociedade Brasileira de Zootecnia2013-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900005Revista Brasileira de Zootecnia v.42 n.9 2013reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982013000900005info:eu-repo/semantics/openAccessBarbosa,Ana Carla BorgesMalhado,Carlos Henrique MendesCarneiro,Paulo Luiz SouzaMuniz,Lorena Mirelle SantosAmbrosini,Diego PagungCarrillo,José AdriánMartins-Filho,Raimundoeng2013-08-06T00:00:00Zoai:scielo:S1516-35982013000900005Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2013-08-06T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Population structure of Nellore cattle in northeastern Brazil |
title |
Population structure of Nellore cattle in northeastern Brazil |
spellingShingle |
Population structure of Nellore cattle in northeastern Brazil Barbosa,Ana Carla Borges effective size generation intervals inbreeding pedigree |
title_short |
Population structure of Nellore cattle in northeastern Brazil |
title_full |
Population structure of Nellore cattle in northeastern Brazil |
title_fullStr |
Population structure of Nellore cattle in northeastern Brazil |
title_full_unstemmed |
Population structure of Nellore cattle in northeastern Brazil |
title_sort |
Population structure of Nellore cattle in northeastern Brazil |
author |
Barbosa,Ana Carla Borges |
author_facet |
Barbosa,Ana Carla Borges Malhado,Carlos Henrique Mendes Carneiro,Paulo Luiz Souza Muniz,Lorena Mirelle Santos Ambrosini,Diego Pagung Carrillo,José Adrián Martins-Filho,Raimundo |
author_role |
author |
author2 |
Malhado,Carlos Henrique Mendes Carneiro,Paulo Luiz Souza Muniz,Lorena Mirelle Santos Ambrosini,Diego Pagung Carrillo,José Adrián Martins-Filho,Raimundo |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Barbosa,Ana Carla Borges Malhado,Carlos Henrique Mendes Carneiro,Paulo Luiz Souza Muniz,Lorena Mirelle Santos Ambrosini,Diego Pagung Carrillo,José Adrián Martins-Filho,Raimundo |
dc.subject.por.fl_str_mv |
effective size generation intervals inbreeding pedigree |
topic |
effective size generation intervals inbreeding pedigree |
description |
The objective of this study was to evaluate the population genetic structure of Nellore cattle in northeastern Brazil. Pedigree information was collected from 175,231 animals born from 1967 to 2007. Probability of gene origin, inbreeding, average relatedness coefficient (AR), completeness pedigree, effective population size and generation interval were calculated. Generation interval was high due to the long period of time animals were used as reproducers. The bottleneck effect was evidenced as a result of intensive use of limited breeders over the last years. Low values were observed in the effective number of founder animals (434) and ancestors (427) comparing with the number on the base (175,231) and reference populations (130,038). Generally, the variability explained by the founders and ancestors is considered low. The average coefficient of inbreeding (0.11%) and AR (0.14%) estimated for this population is considered low and can be partly explained by the increased population effective number in recent periods; however, it may be underestimated by shallow pedigree. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982013000900005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.42 n.9 2013 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318150887407616 |