Pedigree analyses in the breeding program for nellore cattle.
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
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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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 |
eu_rights_str_mv |
openAccess |
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) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503379467108352 |