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| Registros recuperados : 267 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
23/01/2008 |
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Data da última atualização: |
23/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
VOZZI, P. A.; MARCONDES, C. R.; BEZERRA, L. A. F.; LÔBO, R. B. |
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Afiliação: |
P. A. Vozzi, pós-graduação FMRP-USP; CINTIA RIGHETTI MARCONDES, CPATU; L. A. F. Bezerra, USP; R. B. Lôbo, UNIDERP. |
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Título: |
Pedigree analyses in the breeding program for nellore cattle. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Genetics Molecular Research, v. 6, n. 4, p. 1044-1050, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
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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Palavras-Chave: |
Nellore Cattle. |
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Thesagro: |
Gado Nelore; Genética Animal; Reprodução Animal. |
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Thesaurus NAL: |
pedigree. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84893/1/gmr352.pdf
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Marc: |
LEADER 02060naa a2200217 a 4500
001 1408887
005 2022-11-23
008 2007 bl uuuu u00u1 u #d
100 1 $aVOZZI, P. A.
245 $aPedigree analyses in the breeding program for nellore cattle.$h[electronic resource]
260 $c2007
520 $aParameters 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
650 $apedigree
650 $aGado Nelore
650 $aGenética Animal
650 $aReprodução Animal
653 $aNellore Cattle
700 1 $aMARCONDES, C. R.
700 1 $aBEZERRA, L. A. F.
700 1 $aLÔBO, R. B.
773 $tGenetics Molecular Research$gv. 6, n. 4, p. 1044-1050, 2007.
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Embrapa Amazônia Oriental (CPATU) |
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