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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas; Embrapa Pecuária Sul. |
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Data corrente: |
27/11/2018 |
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Data da última atualização: |
27/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
JUNQUEIRA, V. S.; LOPES, P. S.; RESENDE, M. D. V. de; SILVA, F. F. e; LOURENÇO, D. A. L.; YOKOO, M. J. I.; CARDOSO, F. F. |
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Afiliação: |
Vinícius Silva Junqueira, UFV; Paulo Sávio Lopes, UFV; MARCOS DEON VILELA DE RESENDE, CNPF; Fabyano Fonseca e Silva, UFV; Daniela Andressa Lino Lourenço, University of Georgia; Marcos Jun Iti Yokoo, UFPEL; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Impact of embryo transfer phenotypic records on large-scale beef cattle genetic evaluations. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, Viçosa, MG, v. 47, e20170033, 2018. |
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Páginas: |
4 p. |
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DOI: |
10.1590/rbz4720170033 |
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Idioma: |
Inglês |
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Conteúdo: |
We aimed to evaluate the impact of using embryo transfer (ET) information on weaning weight estimated breeding values (EBV) and its accuracy. Data from Hereford and Braford cattle, raised under extensive conditions in Southern Brazil, were used. A model that included ET information in addition to maternal (genetic and permanent environmental) effects as a function of foster dams was compared to a model without ET information. Accuracy of both bulls and calves increased due to inclusion of ET records in 0.04 and 0.12 points, respectively. In general, the inclusion of ET records provided a greater amount of phenotypic variance and most accurate EBV for sires and progeny. The results obtained in this study encourage the use of ET phenotypic records in large-scale genetic evaluation programs, especially for bulls that have most of their progeny coming from ET. Most of the Brazilian genetic evaluation programs do not use phenotypic records of ET animals. Therefore, breeding values are predicted based only on parentage average, which implies in underestimated accuracies. Considering that ET has been widely used in Brazil and that such information improves genetic predictions, we suggest modifying the traditional adopted models by considering ET information in the Brazilian genetic evaluations. |
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Palavras-Chave: |
Assisted reproduction; Foster dam; Genetic groups. |
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Thesagro: |
Bovino; Gado de Corte. |
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Thesaurus Nal: |
Accuracy; Beef cattle. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02181naa a2200301 a 4500
001 2100193
005 2018-11-27
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1590/rbz4720170033$2DOI
100 1 $aJUNQUEIRA, V. S.
245 $aImpact of embryo transfer phenotypic records on large-scale beef cattle genetic evaluations.$h[electronic resource]
260 $c2018
300 $a4 p.
520 $aWe aimed to evaluate the impact of using embryo transfer (ET) information on weaning weight estimated breeding values (EBV) and its accuracy. Data from Hereford and Braford cattle, raised under extensive conditions in Southern Brazil, were used. A model that included ET information in addition to maternal (genetic and permanent environmental) effects as a function of foster dams was compared to a model without ET information. Accuracy of both bulls and calves increased due to inclusion of ET records in 0.04 and 0.12 points, respectively. In general, the inclusion of ET records provided a greater amount of phenotypic variance and most accurate EBV for sires and progeny. The results obtained in this study encourage the use of ET phenotypic records in large-scale genetic evaluation programs, especially for bulls that have most of their progeny coming from ET. Most of the Brazilian genetic evaluation programs do not use phenotypic records of ET animals. Therefore, breeding values are predicted based only on parentage average, which implies in underestimated accuracies. Considering that ET has been widely used in Brazil and that such information improves genetic predictions, we suggest modifying the traditional adopted models by considering ET information in the Brazilian genetic evaluations.
650 $aAccuracy
650 $aBeef cattle
650 $aBovino
650 $aGado de Corte
653 $aAssisted reproduction
653 $aFoster dam
653 $aGenetic groups
700 1 $aLOPES, P. S.
700 1 $aRESENDE, M. D. V. de
700 1 $aSILVA, F. F. e
700 1 $aLOURENÇO, D. A. L.
700 1 $aYOKOO, M. J. I.
700 1 $aCARDOSO, F. F.
773 $tRevista Brasileira de Zootecnia, Viçosa, MG$gv. 47, e20170033, 2018.
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Embrapa Florestas (CNPF) |
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