Pedigree analyses in the breeding program for nellore cattle.

Detalhes bibliográficos
Autor(a) principal: VOZZI, P. A.
Data de Publicação: 2007
Outros Autores: MARCONDES, C. R., BEZERRA, L. A. F., LÔBO, R. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/408887
Resumo: Parameters based on the probability of gene origin were used to describe genetic variability in three reproductive groups from the Breeding Program for Nellore Cattle (PMGRN). The three reproductive populations (cows in reproductive age, bulls from artificial insemination centers and young bulls in progeny test) generated medium to low values. The effective number of founders (Nf), the effective number of ancestors (Na) and the remaining genomes (Ng) suggest low founder representativeness, high genetic contribution by some ancestors, considerable loss of founder alleles and lack of allelic representativeness in bulls kept in artificial insemination centers and young sires in progeny test in relation to the diversity on the farms participating in the PMGRN. The parameters based on the probability of gene origin in the three reproductive groups were: 84.3, 53 and 54.2 (Nf); 71, 36.6 and 30 (Na) and 51.4, 19.3 and 19 (Ng) for cows, bulls from artificial insemination centers and young sires in progeny test, respectively. Future matings and the introduction of selected progeny reproduction may decrease the parameters based on the probability of gene origin in each reproductive group, thereby increasing considerably the additive relationship in the three reproductive groups and consequently increasing the probability of inbreeding in the future. Strategies to maintain genetic variability in bull populations must be implemented
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spelling Pedigree analyses in the breeding program for nellore cattle.Nellore CattleGado NeloreGenética AnimalReprodução AnimalpedigreeParameters based on the probability of gene origin were used to describe genetic variability in three reproductive groups from the Breeding Program for Nellore Cattle (PMGRN). The three reproductive populations (cows in reproductive age, bulls from artificial insemination centers and young bulls in progeny test) generated medium to low values. The effective number of founders (Nf), the effective number of ancestors (Na) and the remaining genomes (Ng) suggest low founder representativeness, high genetic contribution by some ancestors, considerable loss of founder alleles and lack of allelic representativeness in bulls kept in artificial insemination centers and young sires in progeny test in relation to the diversity on the farms participating in the PMGRN. The parameters based on the probability of gene origin in the three reproductive groups were: 84.3, 53 and 54.2 (Nf); 71, 36.6 and 30 (Na) and 51.4, 19.3 and 19 (Ng) for cows, bulls from artificial insemination centers and young sires in progeny test, respectively. Future matings and the introduction of selected progeny reproduction may decrease the parameters based on the probability of gene origin in each reproductive group, thereby increasing considerably the additive relationship in the three reproductive groups and consequently increasing the probability of inbreeding in the future. Strategies to maintain genetic variability in bull populations must be implementedP. A. Vozzi, pós-graduação FMRP-USP; CINTIA RIGHETTI MARCONDES, CPATU; L. A. F. Bezerra, USP; R. B. Lôbo, UNIDERP.VOZZI, P. A.MARCONDES, C. R.BEZERRA, L. A. F.LÔBO, R. B.2013-06-27T23:30:36Z2013-06-27T23:30:36Z2008-01-2320072013-06-27T23:30:36Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGenetics Molecular Research, v. 6, n. 4, p. 1044-1050, 2007.http://www.alice.cnptia.embrapa.br/alice/handle/doc/408887enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2013-09-20T13:18:46Zoai:www.alice.cnptia.embrapa.br:doc/408887Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542013-09-20T13:18:46falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542013-09-20T13:18:46Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Pedigree analyses in the breeding program for nellore cattle.
title Pedigree analyses in the breeding program for nellore cattle.
spellingShingle Pedigree analyses in the breeding program for nellore cattle.
VOZZI, P. A.
Nellore Cattle
Gado Nelore
Genética Animal
Reprodução Animal
pedigree
title_short Pedigree analyses in the breeding program for nellore cattle.
title_full Pedigree analyses in the breeding program for nellore cattle.
title_fullStr Pedigree analyses in the breeding program for nellore cattle.
title_full_unstemmed Pedigree analyses in the breeding program for nellore cattle.
title_sort Pedigree analyses in the breeding program for nellore cattle.
author VOZZI, P. A.
author_facet VOZZI, P. A.
MARCONDES, C. R.
BEZERRA, L. A. F.
LÔBO, R. B.
author_role author
author2 MARCONDES, C. R.
BEZERRA, L. A. F.
LÔBO, R. B.
author2_role author
author
author
dc.contributor.none.fl_str_mv P. A. Vozzi, pós-graduação FMRP-USP; CINTIA RIGHETTI MARCONDES, CPATU; L. A. F. Bezerra, USP; R. B. Lôbo, UNIDERP.
dc.contributor.author.fl_str_mv VOZZI, P. A.
MARCONDES, C. R.
BEZERRA, L. A. F.
LÔBO, R. B.
dc.subject.por.fl_str_mv Nellore Cattle
Gado Nelore
Genética Animal
Reprodução Animal
pedigree
topic Nellore Cattle
Gado Nelore
Genética Animal
Reprodução Animal
pedigree
description Parameters based on the probability of gene origin were used to describe genetic variability in three reproductive groups from the Breeding Program for Nellore Cattle (PMGRN). The three reproductive populations (cows in reproductive age, bulls from artificial insemination centers and young bulls in progeny test) generated medium to low values. The effective number of founders (Nf), the effective number of ancestors (Na) and the remaining genomes (Ng) suggest low founder representativeness, high genetic contribution by some ancestors, considerable loss of founder alleles and lack of allelic representativeness in bulls kept in artificial insemination centers and young sires in progeny test in relation to the diversity on the farms participating in the PMGRN. The parameters based on the probability of gene origin in the three reproductive groups were: 84.3, 53 and 54.2 (Nf); 71, 36.6 and 30 (Na) and 51.4, 19.3 and 19 (Ng) for cows, bulls from artificial insemination centers and young sires in progeny test, respectively. Future matings and the introduction of selected progeny reproduction may decrease the parameters based on the probability of gene origin in each reproductive group, thereby increasing considerably the additive relationship in the three reproductive groups and consequently increasing the probability of inbreeding in the future. Strategies to maintain genetic variability in bull populations must be implemented
publishDate 2007
dc.date.none.fl_str_mv 2007
2008-01-23
2013-06-27T23:30:36Z
2013-06-27T23:30:36Z
2013-06-27T23:30:36Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Genetics Molecular Research, v. 6, n. 4, p. 1044-1050, 2007.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/408887
identifier_str_mv Genetics Molecular Research, v. 6, n. 4, p. 1044-1050, 2007.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/408887
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
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