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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
08/07/2017 |
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Data da última atualização: |
27/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CANAZA-CAYO, A. W.; LOPES, P. S.; COBUCI, J. A.; MARTINS, M. F.; SILVA, M. V. G. B. |
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Afiliação: |
Ali William Canaza-Cayo, National University of Altiplano, Puno, Peru; Paulo Sávio Lopes, UFV; Jaime Araújo Cobuci, UFRGS; MARTA FONSECA MARTINS, CNPGL; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL. |
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Título: |
Genetic parameters of milk production and reproduction traits of Girolando cattle in Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Italian Journal of Animal Science, v. 16, 2017. |
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Páginas: |
9 p. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to estimate the heritability and genetic, phenotypic, and environmental correlations between 305-day milk yield (305MY), age at first calving (AFC), calving interval (CI) and dry period length (DPL), as well as to compare the productive and reproductive performances of several groups of Girolando cows during their first, second and third parturitions in Brazil. Genetic parameters were estimated using uni- and bi-trait analyses via restricted maximum likelihood (REML). Heritability estimates were similar between uni- and bi-trait analyses and varied from 0.20 to 0.28, 0.00 to 0.08 and 0.07 to 0.14 for 305MY, CI and DPL, respectively, whereas AFC was 0.20. Genetic correlations between 305MY and AFC (?0.49) or DPL (?0.40 to ?0.79) show a favourable association. However, an unfavourable genetic association was verified between 305MY and CI (0.59) in the first calving. Environmental and phenotypic correlations between 305MY and CI or DPL showed a favourable association (?0.25 to ?0.42 and ?0.14 to ?0.44). Concerning the cow breed group, a decrease in 305MY was observed as the fraction of the Gyr breed increased, whereas animals from the 1/2 Holstein +1/2 Gyr crossbreeding group yielded better performances for AFC and CI. These results reveal large genetic, phenotypic and environmental variations that could be used in selection programmes. |
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Palavras-Chave: |
Genetic parameters. |
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Thesaurus Nal: |
Girolando; milk yield; reproductive traits. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02048naa a2200229 a 4500
001 2072292
005 2023-01-27
008 2017 bl uuuu u00u1 u #d
100 1 $aCANAZA-CAYO, A. W.
245 $aGenetic parameters of milk production and reproduction traits of Girolando cattle in Brazil.$h[electronic resource]
260 $c2017
300 $a9 p.
520 $aThe objective of this study was to estimate the heritability and genetic, phenotypic, and environmental correlations between 305-day milk yield (305MY), age at first calving (AFC), calving interval (CI) and dry period length (DPL), as well as to compare the productive and reproductive performances of several groups of Girolando cows during their first, second and third parturitions in Brazil. Genetic parameters were estimated using uni- and bi-trait analyses via restricted maximum likelihood (REML). Heritability estimates were similar between uni- and bi-trait analyses and varied from 0.20 to 0.28, 0.00 to 0.08 and 0.07 to 0.14 for 305MY, CI and DPL, respectively, whereas AFC was 0.20. Genetic correlations between 305MY and AFC (?0.49) or DPL (?0.40 to ?0.79) show a favourable association. However, an unfavourable genetic association was verified between 305MY and CI (0.59) in the first calving. Environmental and phenotypic correlations between 305MY and CI or DPL showed a favourable association (?0.25 to ?0.42 and ?0.14 to ?0.44). Concerning the cow breed group, a decrease in 305MY was observed as the fraction of the Gyr breed increased, whereas animals from the 1/2 Holstein +1/2 Gyr crossbreeding group yielded better performances for AFC and CI. These results reveal large genetic, phenotypic and environmental variations that could be used in selection programmes.
650 $aGirolando
650 $amilk yield
650 $areproductive traits
653 $aGenetic parameters
700 1 $aLOPES, P. S.
700 1 $aCOBUCI, J. A.
700 1 $aMARTINS, M. F.
700 1 $aSILVA, M. V. G. B.
773 $tItalian Journal of Animal Science$gv. 16, 2017.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Origem |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
20/11/2017 |
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Data da última atualização: |
20/11/2017 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
VERNETTI JUNIOR, F. de J. |
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Afiliação: |
FRANCISCO DE JESUS VERNETTI JUNIOR, CPACT. |
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Título: |
Comportamento de Cultivares de Soja GMR 5 na Embrapa Clima Temperado. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: VERNETTI JUNIOR, F. de J. (Ed.). Resultados de pesquisa de soja na Embrapa Clima Temperado - 2015. Pelotas: Embrapa Clima Temperado, 2017. 53 p. (Embrapa Clima Temperado. Documentos, 432). |
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Páginas: |
p. 9-16 |
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Idioma: |
Português |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/166979/1/Documento-432-Incluido.pdf
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Marc: |
LEADER 00548naa a2200133 a 4500
001 2080141
005 2017-11-20
008 2017 bl uuuu u00u1 u #d
100 1 $aVERNETTI JUNIOR, F. de J.
245 $aComportamento de Cultivares de Soja GMR 5 na Embrapa Clima Temperado.$h[electronic resource]
260 $c2017
300 $ap. 9-16
650 $aSoja
773 $tIn: VERNETTI JUNIOR, F. de J. (Ed.). Resultados de pesquisa de soja na Embrapa Clima Temperado - 2015. Pelotas: Embrapa Clima Temperado, 2017. 53 p. (Embrapa Clima Temperado. Documentos, 432).
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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