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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
24/07/2019 |
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Data da última atualização: |
01/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS, G. S.; REIMANN, F. A.; SCHIMDT, P. I.; CARDOSO, L. L.; SOLLERO, B. P.; BRACCINI, J.; YOKOO, M. J. I.; BOLIGON, A. A.; CARDOSO, F. F. |
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Afiliação: |
G. S. Campos, UFPEL; F. A. Reimann, UFPEL; P. I. Schimdt, UFPEL; L. L. Cardoso; BRUNA PENA SOLLERO, CPPSUL; J. Braccini, UFRGS; MARCOS JUN ITI YOKOO, CPPSUL; A. A. Boligon, UFPEL; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Threshold and linear models for genetic evaluation of visual scores in Hereford and Braford cattle. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Animal Production Science, v. 59, n. 4, p. 619-627, 2019. |
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DOI: |
doi.org/10.1071/AN17436 |
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Idioma: |
Inglês |
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Conteúdo: |
Data from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the threshold model would be recommended to perform genetic evaluation of navel score in this population. However, linear and threshold models showed similar predictive ability for conformation, precocity, muscling and size scores. MenosData from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the thres... Mostrar Tudo |
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Palavras-Chave: |
Inferência bayesiana. |
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Thesagro: |
Criação; Gado de Corte; Melhoramento Genético Animal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02568naa a2200277 a 4500
001 2110830
005 2019-10-01
008 2019 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1071/AN17436$2DOI
100 1 $aCAMPOS, G. S.
245 $aThreshold and linear models for genetic evaluation of visual scores in Hereford and Braford cattle.$h[electronic resource]
260 $c2019
520 $aData from 127 539 Hereford and Braford cattle were used to compare estimates of genetic parameters for navel, conformation, precocity, muscling and size visual scores at yearling, using linear and threshold animal models. In a second step, these models were cross-validated using a multinomial logistic regression in order to quantify the association between phenotype and genetic merit for each trait. For navel score, higher heritability was obtained with the threshold model (0.42 ± 0.02) in relation to the linear model (0.22 ± 0.02). However, similar heritability was estimated in both models for conformation, precocity, muscling and size, with values of 0.18 ± 0.01, 0.19 ± 0.01, 0.19 ± 0.01 and 0.26 ± 0.01, respectively, using linear model, and of 0.19 ± 0.01, 0.19 ± 0.01, 0.20 ± 0.01, and 0.29 ± 0.01, respectively, using threshold model. For navel score, Spearman correlations between sires? breeding values predicted using linear and threshold models ranged from 0.60 (1% of the best sires are selected) to 0.96 (all sires are selected). For conformation, precocity, muscling and size scores, low changes in sires? rank are expected using these models (Spearman correlations >0.86), regardless of the proportion of sires selected. Except for navel with the linear model, the direction of the associations between phenotype and genetic merit were in accordance with its expectation, as there were increases in the phenotype per unit of change in the breeding value. Thus, the threshold model would be recommended to perform genetic evaluation of navel score in this population. However, linear and threshold models showed similar predictive ability for conformation, precocity, muscling and size scores.
650 $aCriação
650 $aGado de Corte
650 $aMelhoramento Genético Animal
653 $aInferência bayesiana
700 1 $aREIMANN, F. A.
700 1 $aSCHIMDT, P. I.
700 1 $aCARDOSO, L. L.
700 1 $aSOLLERO, B. P.
700 1 $aBRACCINI, J.
700 1 $aYOKOO, M. J. I.
700 1 $aBOLIGON, A. A.
700 1 $aCARDOSO, F. F.
773 $tAnimal Production Science$gv. 59, n. 4, p. 619-627, 2019.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Biblioteca |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
18/02/2009 |
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Data da última atualização: |
21/11/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
POZZOBON, M. T.; PEÑALOZA, A. del P. S.; GOEDERT, C. de O.; BRASILEIRO-VIDAL, A. C.; BRAMMER, S. P.; SCAGLIUSI, S. M. M.; SANTOS, S. dos; LIMA, G. S. de; RIBEIRO, M. R.; SILVA, R. C.; COSTA, C. T. da; OLIVEIRA, A. R. da S. |
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Afiliação: |
MARISA TONIOLO POZZOBON, Cenargen; ANDRÉA DEL PILAR DE SOUZA PEÑALOZA, Cenargen; CLARA OLIVEIRA GOEDERT, Cenargen; Ana Christina Brasileiro Vidal, UFPE; SANDRA PATUSSI BRAMMER, CNPT; SANDRA MARIA MANSUR SCAGLIUSI, CNPT; SILEUZA DOS SANTOS, Cenargen; Guilherme Sena de Lima, Bolsista Cenargen; Milene Rocha Ribeiro, Bolsista Cenargen; Rafael de Carvalho Silva, Bolsista Cenargen; Cibele Tesser da Costa, Embrapa Trigo; Ana Rafaela da Silva Oliveira, UFPE. |
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Título: |
Integridade fisiológica e genética de germoplasma de trigo (Triticum aestivum L.) armazenados em longo prazo. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 2., 2008, Passo Fundo. Atas e resumos... Passo Fundo: Comissão Brasileira de Pesquisa de Trigo e Triticale: Embrapa Trigo: Embrapa Transferência de Tecnologia, 2008. |
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Páginas: |
3 p. |
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Descrição Física: |
1 CD-ROM. Melhoramento, 56. |
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Idioma: |
Português |
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Notas: |
Área: Melhoramento, Aptidão Industrial e Sementes. |
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Thesagro: |
Melhoramento genético vegetal. |
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Thesaurus NAL: |
Germplasm conservation; Wheat. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPT-2010/39883/1/resumosmelhoramento.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/186505/1/CNPT-ID39883.pdf
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Marc: |
LEADER 01159nam a2200289 a 4500
001 1851683
005 2018-11-21
008 2008 bl uuuu u00u1 u #d
100 1 $aPOZZOBON, M. T.
245 $aIntegridade fisiológica e genética de germoplasma de trigo (Triticum aestivum L.) armazenados em longo prazo.$h[electronic resource]
260 $aIn: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 2., 2008, Passo Fundo. Atas e resumos... Passo Fundo: Comissão Brasileira de Pesquisa de Trigo e Triticale: Embrapa Trigo: Embrapa Transferência de Tecnologia$c2008
300 $a3 p.$c1 CD-ROM. Melhoramento, 56.
500 $aÁrea: Melhoramento, Aptidão Industrial e Sementes.
650 $aGermplasm conservation
650 $aWheat
650 $aMelhoramento genético vegetal
700 1 $aPEÑALOZA, A. del P. S.
700 1 $aGOEDERT, C. de O.
700 1 $aBRASILEIRO-VIDAL, A. C.
700 1 $aBRAMMER, S. P.
700 1 $aSCAGLIUSI, S. M. M.
700 1 $aSANTOS, S. dos
700 1 $aLIMA, G. S. de
700 1 $aRIBEIRO, M. R.
700 1 $aSILVA, R. C.
700 1 $aCOSTA, C. T. da
700 1 $aOLIVEIRA, A. R. da S.
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Embrapa Trigo (CNPT) |
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