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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
18/03/2011 |
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Data da última atualização: |
15/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COSTA, C. N.; CARVALHEIRA, J.; COBUCI, J. A.; FREITAS, A. F. de; THOMPSON, G. |
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Afiliação: |
CLAUDIO NAPOLIS COSTA, CNPGL; J. CARVALHEIRA, UNIVERSITY OF PORTO, PORTUGAL; JAIME ARAÚJO COBUCI, UFRS; ARY FERREIRA DE FREITAS, Pesquisador aposentado do CNPGL; G. THOMPSON, UNIVERSITY OF PORTO, PORTUGAL. |
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Título: |
Estimation of genetic parameters of test day fat and protein yields in Brazilian Holstein cattle using an autoregressive multiple lactation animal model. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
South African Journal of Animal Science, v. 39, n. 5, p. 165-168, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
This study was aimed to estimate variance components and genetic parameters for daily fat and protein yields of Brazilian Holstein cattle, using an autoregressive test day multiple lactations (AR) animal model. Data consisted of test day (TD) records produced by Holstein cows under milk recording supervised by the Brazilian Holstein Association, calving from 1993 to 2004. Medium to high heritability estimates (from 0.18 to 0.30 and from 0.30 to 0.43 for fat and protein TD yields, respectively) suggest opportunities for larger genetic gain by selection. Results from this study confirm the potential of using TD yields to replace the lactation model to estimate breeding values of Holstein cows in Brazil. Further studies are needed to compare these results with other modelling approaches e.g., the RR model. |
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Palavras-Chave: |
Milk components; Selection; Test-day model; Variance components. |
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Thesaurus Nal: |
dairy cattle. |
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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/doc/881486/1/Estimation-of-genetic-parameters-of-test-day-fat-and-protein-yields.pdf
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Marc: |
LEADER 01563naa a2200229 a 4500
001 1881486
005 2024-02-15
008 2010 bl uuuu u00u1 u #d
100 1 $aCOSTA, C. N.
245 $aEstimation of genetic parameters of test day fat and protein yields in Brazilian Holstein cattle using an autoregressive multiple lactation animal model.$h[electronic resource]
260 $c2010
520 $aThis study was aimed to estimate variance components and genetic parameters for daily fat and protein yields of Brazilian Holstein cattle, using an autoregressive test day multiple lactations (AR) animal model. Data consisted of test day (TD) records produced by Holstein cows under milk recording supervised by the Brazilian Holstein Association, calving from 1993 to 2004. Medium to high heritability estimates (from 0.18 to 0.30 and from 0.30 to 0.43 for fat and protein TD yields, respectively) suggest opportunities for larger genetic gain by selection. Results from this study confirm the potential of using TD yields to replace the lactation model to estimate breeding values of Holstein cows in Brazil. Further studies are needed to compare these results with other modelling approaches e.g., the RR model.
650 $adairy cattle
653 $aMilk components
653 $aSelection
653 $aTest-day model
653 $aVariance components
700 1 $aCARVALHEIRA, J.
700 1 $aCOBUCI, J. A.
700 1 $aFREITAS, A. F. de
700 1 $aTHOMPSON, G.
773 $tSouth African Journal of Animal Science$gv. 39, n. 5, p. 165-168, 2010.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
30/04/2002 |
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Data da última atualização: |
30/04/2002 |
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Autoria: |
PIZZAMIGLIO, M. A.; GUTIERREZ, A. P.; SANTOS, W. J. dos; GALLAGHER, K. D.; OLIVEIRA, W. S. de; FUJITA, Z. |
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Título: |
Phenological Patterns ans Sampling Decision Rules For Arthropods in Cotton Fields in Paraná, Brazil: Before Boll Weevil. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.24, n.3, p. 337-345, mar.1989 |
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Idioma: |
Inglês |
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Conteúdo: |
Several species of arthropods commonly found in untreated cotton in Paraná, Brazil, were sampled using the aceurate whole plant bag sampling method (WPBS). The data provide important background information for cotton prior to the expected increase ín insecticide use for the control of the newly introduced cotton bofl weevil (Anthonomus grandis Boh.) ín Paraná, Brazíl, Decision sampling rules base on Taylor's powcr law were developed for inany of the conimon species. ne relationship between the proportion of infested plants and the average density of arthropods per plant for cotton aphid and the cotton stem borer were, assessed for the cotton aphid. (Aphis gossypii Glover, 1876) and the stem borer (Eufinobothrus brasiliensis (Hambleton, 1937)). These functions may be used in the fleld to estímate the mean density of these pests in the field from presence-absence observations.
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Palavras-Chave: |
presence-absence sampling; whole plant bag sampling method. |
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Thesaurus NAL: |
cotton. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01595naa a2200217 a 4500
001 1107069
005 2002-04-30
008 1989 bl uuuu u00u1 u #d
100 1 $aPIZZAMIGLIO, M. A.
245 $aPhenological Patterns ans Sampling Decision Rules For Arthropods in Cotton Fields in Paraná, Brazil$bBefore Boll Weevil.
260 $c1989
520 $aSeveral species of arthropods commonly found in untreated cotton in Paraná, Brazil, were sampled using the aceurate whole plant bag sampling method (WPBS). The data provide important background information for cotton prior to the expected increase ín insecticide use for the control of the newly introduced cotton bofl weevil (Anthonomus grandis Boh.) ín Paraná, Brazíl, Decision sampling rules base on Taylor's powcr law were developed for inany of the conimon species. ne relationship between the proportion of infested plants and the average density of arthropods per plant for cotton aphid and the cotton stem borer were, assessed for the cotton aphid. (Aphis gossypii Glover, 1876) and the stem borer (Eufinobothrus brasiliensis (Hambleton, 1937)). These functions may be used in the fleld to estímate the mean density of these pests in the field from presence-absence observations.
650 $acotton
653 $apresence-absence sampling
653 $awhole plant bag sampling method
700 1 $aGUTIERREZ, A. P.
700 1 $aSANTOS, W. J. dos
700 1 $aGALLAGHER, K. D.
700 1 $aOLIVEIRA, W. S. de
700 1 $aFUJITA, Z.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.24, n.3, p. 337-345, mar.1989
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Embrapa Unidades Centrais (AI-SEDE) |
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