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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/09/2021 |
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Data da última atualização: |
29/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DALTRO, D. dos S.; AMBROSINI, D. P.; NEGRI, R.; SILVA, M. V. G. B.; COBUCI, J. A. |
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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. |
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Título: |
Homoscedastic or heteroscedastic inference in the genetic evaluation of a multi-breed dairy cattle. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Livestock Science, v. 250, 104567, 2021. |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Correlação de Spearman; Herdabilidade; Modelo multi-raças. |
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Thesagro: |
Gado Leiteiro; Genética Animal; Vaca Leiteira. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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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.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
31/01/2007 |
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Data da última atualização: |
25/05/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
MOTA, F. F. da; GOMES, E.; MARRIEL, I.; PAIVA, E.; SELDIN, L. |
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Afiliação: |
ELIANE APARECIDA GOMES, CNPMS; IVANILDO EVODIO MARRIEL, CNPMS. |
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Título: |
Molecular ecology based on 16S rDNA of bacterial communities from rhizospheres of sensitive and tolerant maize varieties under aluminum-stressing and non-stressing conditions thirty and ninety days after sowing. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 27.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 11.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 9.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 6., 2006, Bonito. Fertbio 2006: a busca das raízes: anais. Dourados: Embrapa Agropecuária Oeste, 2006. |
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Descrição Física: |
1 CD-ROM. |
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Série: |
(Embrapa Agropecuária Oeste. Documentos, 82). |
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Idioma: |
Inglês |
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Palavras-Chave: |
Maize; Rizhobacteria. |
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Thesaurus NAL: |
aluminum. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55885/1/Molecular-ecology.pdf
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Marc: |
LEADER 01009nam a2200205 a 4500
001 1490362
005 2018-05-25
008 2006 bl uuuu u00u1 u #d
100 1 $aMOTA, F. F. da
245 $aMolecular ecology based on 16S rDNA of bacterial communities from rhizospheres of sensitive and tolerant maize varieties under aluminum-stressing and non-stressing conditions thirty and ninety days after sowing.$h[electronic resource]
260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 27.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 11.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 9.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 6., 2006, Bonito. Fertbio 2006: a busca das raízes: anais. Dourados: Embrapa Agropecuária Oeste$c2006
300 $c1 CD-ROM.
490 $a(Embrapa Agropecuária Oeste. Documentos, 82).
650 $aaluminum
653 $aMaize
653 $aRizhobacteria
700 1 $aGOMES, E.
700 1 $aMARRIEL, I.
700 1 $aPAIVA, E.
700 1 $aSELDIN, L.
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Embrapa Milho e Sorgo (CNPMS) |
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