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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/10/2007 |
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Data da última atualização: |
16/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MELO, C. M. R. de; PACKER, I. U.; COSTA, C. N.; MACHADO, P. F. |
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Afiliação: |
C. M. R. de Melo, UFSC; I. U. Packer, ESALQ/USP; Cláudio Nápolis Costa, Embrapa Gado de Leite; P. F. Machado, ESALQ/USP. |
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Título: |
Genetic parameters for test day milk yields of first lactation Holstein cows by random regression models. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Animal. The International Journal of Animal Biosciences, Cambridge, v. 1, n. 3, p. 325-334, 2007. |
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DOI: |
https://doi.org/10.1017/S1751731107685036 |
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Idioma: |
Inglês |
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Conteúdo: |
Covariance components for test day milk yield using 263 390 first lactation records of 32 448 Holstein cows were estimated using random regression animal models by restricted maximum likelihood. Three functions were used to adjust the lactation curve: the five-parameter logarithmic Ali and Schaeffer function (AS), the three-parameter exponential Wilmink function in its standard form (W) and in a modified form (W*), by reducing the range of covariate, and the combination of Legendre polynomial and W (LEG+W). Heterogeneous residual variance (RV) for different classes (4 and 29) of days in milk was considered in adjusting the functions. Estimates of RV were quite similar, rating from 4.15 to 5.29 kg2. Heritability estimates for AS (0.29 to 0.42), LEG+W (0.28 to 0.42) and W* (0.33 to 0.40) were similar, but heritability estimates used W (0.25 to 0.65) were highest than those estimated by the other functions, particularly at the end of lactation. Genetic correlations between milk yield on consecutive test days were close to unity, but decreased as the interval between test days increased. The AS function with homogeneous RV model had the best fit among those evaluated. |
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Palavras-Chave: |
Genetic parameters; random regression model; test day model; variance components. |
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Thesaurus Nal: |
milk yield. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/596115/1/Genetic-parameters-for-test-day-milk-yields-of-first-lactation-Holstein.pdf
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Marc: |
LEADER 01957naa a2200229 a 4500
001 1596115
005 2024-02-16
008 2007 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1017/S1751731107685036$2DOI
100 1 $aMELO, C. M. R. de
245 $aGenetic parameters for test day milk yields of first lactation Holstein cows by random regression models.$h[electronic resource]
260 $c2007
520 $aCovariance components for test day milk yield using 263 390 first lactation records of 32 448 Holstein cows were estimated using random regression animal models by restricted maximum likelihood. Three functions were used to adjust the lactation curve: the five-parameter logarithmic Ali and Schaeffer function (AS), the three-parameter exponential Wilmink function in its standard form (W) and in a modified form (W*), by reducing the range of covariate, and the combination of Legendre polynomial and W (LEG+W). Heterogeneous residual variance (RV) for different classes (4 and 29) of days in milk was considered in adjusting the functions. Estimates of RV were quite similar, rating from 4.15 to 5.29 kg2. Heritability estimates for AS (0.29 to 0.42), LEG+W (0.28 to 0.42) and W* (0.33 to 0.40) were similar, but heritability estimates used W (0.25 to 0.65) were highest than those estimated by the other functions, particularly at the end of lactation. Genetic correlations between milk yield on consecutive test days were close to unity, but decreased as the interval between test days increased. The AS function with homogeneous RV model had the best fit among those evaluated.
650 $amilk yield
653 $aGenetic parameters
653 $arandom regression model
653 $atest day model
653 $avariance components
700 1 $aPACKER, I. U.
700 1 $aCOSTA, C. N.
700 1 $aMACHADO, P. F.
773 $tAnimal. The International Journal of Animal Biosciences, Cambridge$gv. 1, n. 3, p. 325-334, 2007.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 17 | |
| 1. |  | PIZA, M. A.; COLNAGO, L. A.; MATTOSO, L. H. C. Morphology of blends of collagen and poly (o-ethoxyaniline). Acta Microscopica, Maracaibo, v. 10, p. 106-111. abr 2001. Supplement 1. Proceedings of The First Latin American Symposium on Scanning Microscopy, São Pedro, SP, april, 2001.| Biblioteca(s): Embrapa Instrumentação. |
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| 2. | | PIZA, M. A.; HERRMANN, P. S. P.; MATTOSO, L. H. C.; COLNAGO, L. A. Characterization of collagen films by optical, electron and atomic force microscopies. In: INTERNATIONAL SYMPOSIUM ON NATURAL POLYMERS AND COMPOSITES-ISNaPol, 2., 1998, Atibaia. Proceedings... Brasília: EMBRAPA-SPI, 1998. p. 195-198. Editores: Luiz Henrique Capparelli Mattoso, Elisabete Frollini, Alcides Leão.| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | PIZA, M. A.; PATERNO, L. G.; COLNAGO, L. A.; MATTOSO, L. H. C. Characterization of electrically conductive blends of collagen and poly (o-ethoxyaniline) by AFM and SEM. In: CONGRESSO BRASILEIRO DE MICROSCOPIA DE MATERIAIS - MICROMAT, 7., 2000, São Pedro, SP. MICROMAT 2000: abstracts... São Carlos: [UFSCar], 2000. p. 5, ref. RE001-007.| Biblioteca(s): Embrapa Instrumentação. |
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| 10. | | LEITE, L. S. F.; PIZA, M. A.; MOREIRA, F. K. V.; MATTOSO, L. H. C. Preparação e caracterização de bionanocompósitos à base de gelatina e nanocristais de celulose por casting contínuo. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais ... São Carlos: Embrapa Instrumentação, 2017. p. 209-2112. Editores: Caue Ribeiro de Oliveira, Elaine Cristina Paris, Luiz Henrique Capparelli Mattoso, Marcelo Porto Bemquerer, Maria Alice Martins, Odílio Benedito Garrido de Assis.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 11. | | PIZA, M. A.; PATERNO, L. G.; MATTOSO, L. H. C.; COLNAGO, L. A. Preparação e caracterização de blendas de colágeno e poli(o-etoxianilina) (POEA). In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 2., 1998, São Carlos. Anais do II SIAGRO. São Carlos: Embrapa Instrumentação Agropecuária, 2000. p. 221-227. Editores: Paulo Estevão Cruvinel, Luiz Alberto Colnago, André Torre-Neto.| Biblioteca(s): Embrapa Instrumentação. |
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| 12. | | PIZA, M. A.; PATERNO, L. G.; MATTOSO, L. H. C.; COLNAGO, L. A. Preparação e caracterização de filmes de colágeno e poli(o-etoxianilina) (POEA). In: SIMPÓSIO INTERUNIDADES DE CIÊNCIA E ENGENHARIA DE MATERIAIS-SICEM 98, 1., 1998, São Carlos, SP. Programa e resumos... São Carlos, SP : CETEPE, 1998. p. 25-26.| Biblioteca(s): Embrapa Instrumentação. |
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| 13. | | PATERNO, L. G.; FERREIRA, F. C.; CONSOLIN FILHO, N.; PIZA, M. A.; MATTOSO, L. H. C. Using the self-assembly technique for natural polymers systems. In: INTERNATIONAL SYMPOSIUM ON NATURAL POLYMERS AND COMPOSITES-ISNaPol/2000, 3.; WORKSHOP ON PROGRESS IN PRODUCTION AND PROCESSING OF CELLULOSIC FIBRES AND NATURAL POLYMERS, 2000, São Pedro. Natural polymers and composites. São Carlos: Embrapa Instrumentação Agropecuária: USP-IQSC; Botucatu: UNESP, 2000. p. 22-26. Editors: Luiz Henrique Capparelli Mattoso, Alcides Leão, Elisabete Frollini.| Biblioteca(s): Embrapa Instrumentação. |
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| 15. | | PIZA, M. A.; COLNAGO, L. A.; MATTOSO, L. H. C.; PATERNO, L. G.; VARELA, H.; TORRESI, R. M. Characterization of electrochemically active blends of collagen and poly(o-ethoxyaniline). In: INTERNATIONAL SYMPOSIUM ON NATURAL POLYMERS AND COMPOSITES-ISNaPol/2000, 3.; WORKSHOP ON PROGRESS IN PRODUCTION AND PROCESSING OF CELLULOSIC FIBRES AND NATURAL POLYMERS, 2000, São Pedro. Natural polymers and composites. São Carlos: Embrapa Instrumentação Agropecuária: USP-IQSC; Botucatu: UNESP, 2000. p. 310-314. Editors: Luiz Henrique Capparelli Mattoso, Alcides Leão, Elisabete Frollini.| Biblioteca(s): Embrapa Instrumentação. |
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| 16. | | PIZA, M. A.; PATERNO, L. G.; VARELA, H.; TORRESI, R. M.; SOUZA, E. A. M.; COLNAGO, L. A.; MATTOSO, L. H. C. Characterization of blends of collgen and poly(o-ethoxyaniline). In: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, July 2000, Austria. Book of abstracts. Austria: Elsevier, 2000. p.128, ref. WedA161.| Biblioteca(s): Embrapa Instrumentação. |
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| 17. | | MATTOSO, L. H. C.; FERREIRA, F. C.; HERRMANN, P. S. P.; MARTIN, A. R.; PEREIRA-DA-SILVA, M. A.; PATERNO, L. G.; PIZA, M. A.; CURVELO, A. A. S.; COLNAGO, L. A.; DENES, F. Atomic force microscopy as a tool for the evaluation of natural fibers and polymers surface. In: INTERNATIONAL CONFERENCE ON WOODFIBER-PLASTIC COMPOSITES, 5., 1999, Madison: Forest Products Society, 1999. p.43-56.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 17 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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