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dc.contributor.authorVOZZI, P. A.pt_BR
dc.contributor.authorMARCONDES, C. R.pt_BR
dc.contributor.authorBEZERRA, L. A. F.pt_BR
dc.contributor.authorLÔBO, R. B.pt_BR
dc.date.accessioned2013-06-27T23:30:36Z-
dc.date.available2013-06-27T23:30:36Z-
dc.date.created2008-01-23pt_BR
dc.date.issued2007pt_BR
dc.identifier.citationGenetics Molecular Research, v. 6, n. 4, p. 1044-1050, 2007.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/408887pt_BR
dc.descriptionParameters 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 implementedpt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectNellore Cattlept_BR
dc.titlePedigree analyses in the breeding program for nellore cattle.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-06-27T23:30:36Zpt_BR
dc.subject.thesagroGado Nelorept_BR
dc.subject.thesagroGenética Animalpt_BR
dc.subject.thesagroReprodução Animalpt_BR
dc.subject.nalthesauruspedigreept_BR
riaa.ainfo.id408887pt_BR
riaa.ainfo.lastupdate2013-06-27pt_BR
dc.contributor.institutionP. A. Vozzi, pós-graduação FMRP-USP; CINTIA RIGHETTI MARCONDES, CPATU; L. A. F. Bezerra, USP; R. B. Lôbo, UNIDERP.pt_BR
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