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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
28/10/1994 |
Data da última atualização: |
28/10/1994 |
Autoria: |
MAGALHAES, J. C. A. J. de; PEREIRA, J.; MIRANDA, L. N. de; LOBATO, E.; SAMPAIO, J. B. R. |
Título: |
Efeito da aplicacao de calcario, gesso e materia organica na formacao de cafezais em solos de cerrado. |
Ano de publicação: |
1991 |
Fonte/Imprenta: |
In: EMBRAPA. Centro de Pesquisa Agropecuaria dos Cerrados (Planaltina, DF). Relatorio tecnico anual do Centro de Pesquisa Agropecuaria dos Cerrados 1985/1987. Planaltina, 1991. |
Páginas: |
p.204-207. |
Idioma: |
Português |
Palavras-Chave: |
Coffee; Cultura perene. |
Thesagro: |
Café; Calcário; Cerrado; Coffea Arábica; Gesso; Matéria Orgânica. |
Thesaurus Nal: |
gypsum; liming; organic matter; perennials. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00966naa a2200313 a 4500 001 1549544 005 1994-10-28 008 1991 bl uuuu u00u1 u #d 100 1 $aMAGALHAES, J. C. A. J. de 245 $aEfeito da aplicacao de calcario, gesso e materia organica na formacao de cafezais em solos de cerrado. 260 $c1991 300 $ap.204-207. 650 $agypsum 650 $aliming 650 $aorganic matter 650 $aperennials 650 $aCafé 650 $aCalcário 650 $aCerrado 650 $aCoffea Arábica 650 $aGesso 650 $aMatéria Orgânica 653 $aCoffee 653 $aCultura perene 700 1 $aPEREIRA, J. 700 1 $aMIRANDA, L. N. de 700 1 $aLOBATO, E. 700 1 $aSAMPAIO, J. B. R. 773 $tIn: EMBRAPA. Centro de Pesquisa Agropecuaria dos Cerrados (Planaltina, DF). Relatorio tecnico anual do Centro de Pesquisa Agropecuaria dos Cerrados 1985/1987. Planaltina, 1991.
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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. |
Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
11/04/2013 |
Data da última atualização: |
09/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
PEREIRA, R. J.; BIGNARDI, A. B.; EL FARO, L.; VERNEQUE, R. da S.; VERCESI FILHO, A. E.; ALBUQUERQUE, L. G. |
Afiliação: |
R. J. PEREIRA, UNESP; A. B. BIGNARDI, UNESP; L. EL FARO, APTA; RUI DA SILVA VERNEQUE, CNPGL; A. E. VERCESI FILHO, APTA; L. G. ALBUQUERQUE, UNESP. |
Título: |
Random regression models using legendre polynomials or linear splines for test-day milk yield of dairy Gyr (Bos indicus) cattle. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Journal of Dairy Science, v. 96, n. 1, p. 565-574, 2013. |
DOI: |
https://doi.org/10.3168/jds.2011-5051 |
Idioma: |
Inglês |
Conteúdo: |
Studies investigating the use of random regression models for genetic evaluation of milk production in Zebu cattle are scarce. In this study, 59,744 test-day milk yield records from 7,810 first lactations of purebred dairy Gyr (Bos indicus) and crossbred (dairy Gyr × Holstein) cows were used to compare random regression models in which additive genetic and permanent environmental effects were modeled using orthogonal Legendre polynomials or linear spline functions. Residual variances were modeled considering 1, 5, or 10 classes of days in milk. Five classes fitted the changes in residual variances over the lactation adequately and were used for model comparison. The model that fitted linear spline functions with 6 knots provided the lowest sum of residual variances across lactation. On the other hand, according to the deviance information criterion (DIC) and Bayesian information criterion (BIC), a model using third-order and fourth-order Legendre polynomials for additive genetic and permanent environmental effects, respectively, provided the best fit. However, the high rank correlation (0.998) between this model and that applying third-order Legendre polynomials for additive genetic and permanent environmental effects, indicates that, in practice, the same bulls would be selected by both models. The last model, which is less parameterized, is a parsimonious option for fitting dairy Gyr breed test-day milk yield records. |
Palavras-Chave: |
Estrias; Função covariancia; Modelo de regressão randomica; Polinomial ortogonal. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 02247naa a2200241 a 4500 001 1955583 005 2024-02-09 008 2013 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3168/jds.2011-5051$2DOI 100 1 $aPEREIRA, R. J. 245 $aRandom regression models using legendre polynomials or linear splines for test-day milk yield of dairy Gyr (Bos indicus) cattle.$h[electronic resource] 260 $c2013 520 $aStudies investigating the use of random regression models for genetic evaluation of milk production in Zebu cattle are scarce. In this study, 59,744 test-day milk yield records from 7,810 first lactations of purebred dairy Gyr (Bos indicus) and crossbred (dairy Gyr × Holstein) cows were used to compare random regression models in which additive genetic and permanent environmental effects were modeled using orthogonal Legendre polynomials or linear spline functions. Residual variances were modeled considering 1, 5, or 10 classes of days in milk. Five classes fitted the changes in residual variances over the lactation adequately and were used for model comparison. The model that fitted linear spline functions with 6 knots provided the lowest sum of residual variances across lactation. On the other hand, according to the deviance information criterion (DIC) and Bayesian information criterion (BIC), a model using third-order and fourth-order Legendre polynomials for additive genetic and permanent environmental effects, respectively, provided the best fit. However, the high rank correlation (0.998) between this model and that applying third-order Legendre polynomials for additive genetic and permanent environmental effects, indicates that, in practice, the same bulls would be selected by both models. The last model, which is less parameterized, is a parsimonious option for fitting dairy Gyr breed test-day milk yield records. 653 $aEstrias 653 $aFunção covariancia 653 $aModelo de regressão randomica 653 $aPolinomial ortogonal 700 1 $aBIGNARDI, A. B. 700 1 $aEL FARO, L. 700 1 $aVERNEQUE, R. da S. 700 1 $aVERCESI FILHO, A. E. 700 1 $aALBUQUERQUE, L. G. 773 $tJournal of Dairy Science$gv. 96, n. 1, p. 565-574, 2013.
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