|
|
| 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: |
12/09/2021 |
Data da última atualização: |
29/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
DALTRO, D. dos S.; AMBROSINI, D. P.; NEGRI, R.; SILVA, M. V. G. B.; COBUCI, J. A. |
Afiliação: |
DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; DIEGO PAGUNG AMBROSINI, Instituto Federal do Amapá; RENATA NEGRI, Universidade Federal do Rio Grande do Sul; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JAIME ARAÚJO COBUCI, Universidade Federal do Rio Grande do Sul. |
Título: |
Homoscedastic or heteroscedastic inference in the genetic evaluation of a multi-breed dairy cattle. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Livestock Science, v. 250, 104567, 2021. |
Idioma: |
Inglês |
Conteúdo: |
The objective was to identify the best multi-breed model for the genetic evaluation of test-day milk yield (TDMY) in a Girolando population. The observations were measured from 2000 to 2014, totaling 122,507 observations of 13,544 first-lactation cows and a complete kinship matrix of 66,384 animals. Four different methodologies were evaluated: homoscedastic or heteroscedastic multi-breed model with Gaussian destruction (MAM-G-Ho or MAMG-He) and homoscedastic or heteroscedastic multi-breed model with Student?s t-distribution (MAM-T-Ho or MAM-T-He). The criteria for choosing the best model were the deviance information criterion (DIC), deviance based on the Conditional Predictive Ordinate (DCPO), and deviance based on the Bayes factors (DBF). According to the selection criteria, the MAM-T-He presented the lowest values of DIC, DCPO, and DBF, indicating a better quality of fit for the population in question. Heritability estimates were of medium magnitude for TDMY, varying from 0.27±0.02 to 0.39±0.03 in the different models. Spearman?s correlations based on estimated breeding values used to compare the ranking of animals between Student?s t and Gaussian models were low (0.63 to 0.72) when considering all sires or when considering 10, 20, or 30% of the best sires. These results support the implementation of robust models that account for sources of heteroscedasticity to increase the accuracy of genetic evaluations in the multi-breed population of the Girolando breed. |
Palavras-Chave: |
Correlação de Spearman; Herdabilidade; Modelo multi-raças. |
Thesagro: |
Gado Leiteiro; Genética Animal; Vaca Leiteira. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02203naa a2200241 a 4500 001 2134247 005 2021-12-29 008 2021 bl uuuu u00u1 u #d 100 1 $aDALTRO, D. dos S. 245 $aHomoscedastic or heteroscedastic inference in the genetic evaluation of a multi-breed dairy cattle.$h[electronic resource] 260 $c2021 520 $aThe objective was to identify the best multi-breed model for the genetic evaluation of test-day milk yield (TDMY) in a Girolando population. The observations were measured from 2000 to 2014, totaling 122,507 observations of 13,544 first-lactation cows and a complete kinship matrix of 66,384 animals. Four different methodologies were evaluated: homoscedastic or heteroscedastic multi-breed model with Gaussian destruction (MAM-G-Ho or MAMG-He) and homoscedastic or heteroscedastic multi-breed model with Student?s t-distribution (MAM-T-Ho or MAM-T-He). The criteria for choosing the best model were the deviance information criterion (DIC), deviance based on the Conditional Predictive Ordinate (DCPO), and deviance based on the Bayes factors (DBF). According to the selection criteria, the MAM-T-He presented the lowest values of DIC, DCPO, and DBF, indicating a better quality of fit for the population in question. Heritability estimates were of medium magnitude for TDMY, varying from 0.27±0.02 to 0.39±0.03 in the different models. Spearman?s correlations based on estimated breeding values used to compare the ranking of animals between Student?s t and Gaussian models were low (0.63 to 0.72) when considering all sires or when considering 10, 20, or 30% of the best sires. These results support the implementation of robust models that account for sources of heteroscedasticity to increase the accuracy of genetic evaluations in the multi-breed population of the Girolando breed. 650 $aGado Leiteiro 650 $aGenética Animal 650 $aVaca Leiteira 653 $aCorrelação de Spearman 653 $aHerdabilidade 653 $aModelo multi-raças 700 1 $aAMBROSINI, D. P. 700 1 $aNEGRI, R. 700 1 $aSILVA, M. V. G. B. 700 1 $aCOBUCI, J. A. 773 $tLivestock Science$gv. 250, 104567, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
21/06/2002 |
Data da última atualização: |
21/06/2002 |
Autoria: |
MONTEIRO, R. C.; FELFILI, J. M.; FRANCO, A. C.; SOUSA-SILVA, J. C.; FAGG, C. W. |
Título: |
Desenvolvimento inicial de Cybistax antisyphilitica (Mart.) em diferentes condicoes de sombreamento em viveiro. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE BOTANICA, 51., Brasilia, DF. Resumos. Brasilia: Sociedade de Botanica do Brasil, 2000. |
Páginas: |
p. 52. |
Idioma: |
Português |
Palavras-Chave: |
Indigenous organisms; Planta nativa. |
Thesagro: |
Cerrado; Cybistax Antisyphilitica. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00711naa a2200217 a 4500 001 1564984 005 2002-06-21 008 2000 bl uuuu u00u1 u #d 100 1 $aMONTEIRO, R. C. 245 $aDesenvolvimento inicial de Cybistax antisyphilitica (Mart.) em diferentes condicoes de sombreamento em viveiro. 260 $c2000 300 $ap. 52. 650 $aCerrado 650 $aCybistax Antisyphilitica 653 $aIndigenous organisms 653 $aPlanta nativa 700 1 $aFELFILI, J. M. 700 1 $aFRANCO, A. C. 700 1 $aSOUSA-SILVA, J. C. 700 1 $aFAGG, C. W. 773 $tIn: CONGRESSO NACIONAL DE BOTANICA, 51., Brasilia, DF. Resumos. Brasilia: Sociedade de Botanica do Brasil, 2000.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Cerrados (CPAC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|