Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis

Detalhes bibliográficos
Autor(a) principal: Vozzi,Pedro Alejandro
Data de Publicação: 2006
Outros Autores: Marcondes,Cíntia Righetti, Magnabosco,Cláudio de Ulhôa, Bezerra,Luiz Antonio Framartino, Lôbo,Raysildo Barbosa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Genetics and Molecular Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300014
Resumo: Parameters based on the probability of gene origin were used to describe the genetic variability in strains of Nellore and polled Nellore (Bos indicus) cattle that participated in the Program for Genetic Improvement of the Nellore Breed (Programa de Melhoramento Genético da Raça Nelore). The effective number of founders was 87.2 for Nellore and 107.9 for polled Nellore, while the number of ancestors was 59.8 for Nellore and 61.5 for polled Nellore and the remaining genomes were 39.4 for Nellore and 34.5 for polled Nellore cattle. The results indicate an intense use (by artificial insemination) of some sires and the absence of subdivisions in the population. The family structure in the two breeds was mainly caused by the genetic contribution of the same sires and only mating preferences for descendants of some founders are recorded in either breed. The results suggest that genetic variability needs monitoring in order to avoid the compromise of genetic improvement in economically important traits in the breeding program.
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spelling Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysisgenetic driftgenetic variability matingsNellorepedigree analysisprobability of gene originParameters based on the probability of gene origin were used to describe the genetic variability in strains of Nellore and polled Nellore (Bos indicus) cattle that participated in the Program for Genetic Improvement of the Nellore Breed (Programa de Melhoramento Genético da Raça Nelore). The effective number of founders was 87.2 for Nellore and 107.9 for polled Nellore, while the number of ancestors was 59.8 for Nellore and 61.5 for polled Nellore and the remaining genomes were 39.4 for Nellore and 34.5 for polled Nellore cattle. The results indicate an intense use (by artificial insemination) of some sires and the absence of subdivisions in the population. The family structure in the two breeds was mainly caused by the genetic contribution of the same sires and only mating preferences for descendants of some founders are recorded in either breed. The results suggest that genetic variability needs monitoring in order to avoid the compromise of genetic improvement in economically important traits in the breeding program.Sociedade Brasileira de Genética2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300014Genetics and Molecular Biology v.29 n.3 2006reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572006000300014info:eu-repo/semantics/openAccessVozzi,Pedro AlejandroMarcondes,Cíntia RighettiMagnabosco,Cláudio de UlhôaBezerra,Luiz Antonio FramartinoLôbo,Raysildo Barbosaeng2006-09-01T00:00:00Zoai:scielo:S1415-47572006000300014Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2006-09-01T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
title Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
spellingShingle Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
Vozzi,Pedro Alejandro
genetic drift
genetic variability matings
Nellore
pedigree analysis
probability of gene origin
title_short Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
title_full Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
title_fullStr Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
title_full_unstemmed Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
title_sort Structure and genetic variability in Nellore (Bos indicus) cattle by pedigree analysis
author Vozzi,Pedro Alejandro
author_facet Vozzi,Pedro Alejandro
Marcondes,Cíntia Righetti
Magnabosco,Cláudio de Ulhôa
Bezerra,Luiz Antonio Framartino
Lôbo,Raysildo Barbosa
author_role author
author2 Marcondes,Cíntia Righetti
Magnabosco,Cláudio de Ulhôa
Bezerra,Luiz Antonio Framartino
Lôbo,Raysildo Barbosa
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Vozzi,Pedro Alejandro
Marcondes,Cíntia Righetti
Magnabosco,Cláudio de Ulhôa
Bezerra,Luiz Antonio Framartino
Lôbo,Raysildo Barbosa
dc.subject.por.fl_str_mv genetic drift
genetic variability matings
Nellore
pedigree analysis
probability of gene origin
topic genetic drift
genetic variability matings
Nellore
pedigree analysis
probability of gene origin
description Parameters based on the probability of gene origin were used to describe the genetic variability in strains of Nellore and polled Nellore (Bos indicus) cattle that participated in the Program for Genetic Improvement of the Nellore Breed (Programa de Melhoramento Genético da Raça Nelore). The effective number of founders was 87.2 for Nellore and 107.9 for polled Nellore, while the number of ancestors was 59.8 for Nellore and 61.5 for polled Nellore and the remaining genomes were 39.4 for Nellore and 34.5 for polled Nellore cattle. The results indicate an intense use (by artificial insemination) of some sires and the absence of subdivisions in the population. The family structure in the two breeds was mainly caused by the genetic contribution of the same sires and only mating preferences for descendants of some founders are recorded in either breed. The results suggest that genetic variability needs monitoring in order to avoid the compromise of genetic improvement in economically important traits in the breeding program.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
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=S1415-47572006000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572006000300014
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 Genética
publisher.none.fl_str_mv Sociedade Brasileira de Genética
dc.source.none.fl_str_mv Genetics and Molecular Biology v.29 n.3 2006
reponame:Genetics and Molecular Biology
instname:Sociedade Brasileira de Genética (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Genética (SBG)
instacron_str SBG
institution SBG
reponame_str Genetics and Molecular Biology
collection Genetics and Molecular Biology
repository.name.fl_str_mv Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)
repository.mail.fl_str_mv ||editor@gmb.org.br
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