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| Registros recuperados : 4 | |
| Registros recuperados : 4 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
20/09/2016 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CANAZA-CAYO, A. W.; SILVA, M. V. G. B.; COBUCI, J. A.; MARTINS, M. F.; LOPES, P. S. |
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Afiliação: |
ALI WILLIAM CANAZA-CAYO, UNAP, Peru; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JAIME ARAUJO COBUCI, UFRGS; MARTA FONSECA MARTINS, CNPGL; PAULO SÁVIO LOPES, UFV. |
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Título: |
Effect of inclusion or non-inclusion of short lactations and cow and/or dam genetic group on genetic evaluation of Girolando dairy cattle. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 15, n. 2, gmr.15027768, 2016. |
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DOI: |
http://dx.doi.org/10.4238/gmr.15027768 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate the effects of inclusion or non-inclusion of short lactations and cow (CGG) and/or dam (DGG) genetic group on the genetic evaluation of 305-day milk yield (MY305), age at first calving (AFC), and first calving interval (FCI) of Girolando cows. Covariance components were estimated by the restricted maximum likelihood method in an animal model of single trait analyses. The heritability estimates for MY305, AFC, and FCI ranged from 0.23 to 0.29, 0.40 to 0.44, and 0.13 to 0.14, respectively, when short lactations were not included, and from 0.23 to 0.28, 0.39 to 0.43, and 0.13 to 0.14, respectively, when short lactations were included. The inclusion of short lactations caused little variation in the variance components and heritability estimates of traits, but their non-inclusion resulted in the re-ranking of animals. Models with CGG or DGG fixed effects had higher heritability estimates for all traits compared with models that consider these two effects simultaneously. We recommend using the model with fixed effects of CGG and inclusion of short lactations for the genetic evaluation of Girolando cattle. |
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Palavras-Chave: |
Genetic group; Short lactation; Variance components. |
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Thesaurus NAL: |
Girolando; heritability. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147629/1/Cnpgl-2016-GMR-Effect.pdf
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Marc: |
LEADER 01954naa a2200241 a 4500
001 2053168
005 2024-02-06
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4238/gmr.15027768$2DOI
100 1 $aCANAZA-CAYO, A. W.
245 $aEffect of inclusion or non-inclusion of short lactations and cow and/or dam genetic group on genetic evaluation of Girolando dairy cattle.$h[electronic resource]
260 $c2016
520 $aThe objective of this study was to evaluate the effects of inclusion or non-inclusion of short lactations and cow (CGG) and/or dam (DGG) genetic group on the genetic evaluation of 305-day milk yield (MY305), age at first calving (AFC), and first calving interval (FCI) of Girolando cows. Covariance components were estimated by the restricted maximum likelihood method in an animal model of single trait analyses. The heritability estimates for MY305, AFC, and FCI ranged from 0.23 to 0.29, 0.40 to 0.44, and 0.13 to 0.14, respectively, when short lactations were not included, and from 0.23 to 0.28, 0.39 to 0.43, and 0.13 to 0.14, respectively, when short lactations were included. The inclusion of short lactations caused little variation in the variance components and heritability estimates of traits, but their non-inclusion resulted in the re-ranking of animals. Models with CGG or DGG fixed effects had higher heritability estimates for all traits compared with models that consider these two effects simultaneously. We recommend using the model with fixed effects of CGG and inclusion of short lactations for the genetic evaluation of Girolando cattle.
650 $aGirolando
650 $aheritability
653 $aGenetic group
653 $aShort lactation
653 $aVariance components
700 1 $aSILVA, M. V. G. B.
700 1 $aCOBUCI, J. A.
700 1 $aMARTINS, M. F.
700 1 $aLOPES, P. S.
773 $tGenetics and Molecular Research$gv. 15, n. 2, gmr.15027768, 2016.
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Embrapa Gado de Leite (CNPGL) |
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