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| Registros recuperados : 3 | |
| 1. |  | ABIJAOUDE, J. A.; MORAND-FEHR, P.; HERVIEU, J. Quantitative appreciation of alimentary preferences of dairy goats when offered complete diets. In: INTERNATIONAL CONFERENCE ON GOATS, 6., 1996, Beijing, China. Proceedings... Beijing, China: International Academic, 1996. v. 2, p. 553-557.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 2. | | ABIJAOUDE, J. A.; MORAND-FEHR, P.; HERVIEU, J.; GIGER-REVERDIN, S.; SCHMIDELY; SAUVANT, D. Effect of nature of starch on ruminal characteristics, blood parameters, glucose and insulin kinetics and milk performances of dairy goats. In: INTERNATIONAL CONFERENCE ON GOATS, 6., 1996, Beijing, China. Proceedings... Beijing, China: International Academic, 1996. v. 2, p. 639-642.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 3. | | ABIJAOUDÉ, J. A.; MORAND-FEHR, P.; TESSIER, J.; SCHMIDELY, P.; SAUVANT, D. Influence of forage: concentrate ratio and type of starch in the diet on feeding behaviour, dietary preferences, digestion, metabolism and performance of dairy goats in mid lactation. Animal Science, v. 71, n. 2, p. 359-368, 2000.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 3 | |
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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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Circulação/Nível: |
B - 1 |
|
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://www.alice.cnptia.embrapa.br/alice/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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