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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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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/11/2022 |
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Data da última atualização: |
30/11/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; LORINI, I.; HENNING, A. A.; HENNING, F. A.; OLIVEIRA, M. A. de; HIRAKURI, M. H. |
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Afiliação: |
JOSE DE BARROS FRANCA NETO, CNPSO; FRANCISCO CARLOS KRZYZANOWSKI, CNPSO; IRINEU LORINI, IL CONSULTORIA EMPRESARIAL LTDA; ADEMIR ASSIS HENNING, CNPSO; FERNANDO AUGUSTO HENNING, CNPSO; MARCELO ALVARES DE OLIVEIRA, CNPSO; MARCELO HIROSHI HIRAKURI, CNPSO. |
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Título: |
Uso do teste de tetrazólio para a avaliação da qualidade de grãos de soja produzidos no Brasil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE SOJA, 9., 2022, Foz do iguaçu, PR. Desafios para a produtividade sustentável no Mercosul: resumos. Brasília, DF: Embrapa, 2022. Regina Maria Villas Bôas de Campos Leite, Adeney de Freitas Bueno, editores técnicos. resumo 246. |
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Páginas: |
p. 269. |
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Idioma: |
Português |
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Thesagro: |
Dano Mecânico; Grão; Soja; Teste de Tetrazólio. |
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Thesaurus NAL: |
Grains; Postharvest injuries; Soybeans. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149010/1/CBSoja-2022-269.pdf
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Marc: |
LEADER 00990nam a2200265 a 4500
001 2149010
005 2022-11-30
008 2022 bl uuuu u00u1 u #d
100 1 $aFRANÇA-NETO, J. B.
245 $aUso do teste de tetrazólio para a avaliação da qualidade de grãos de soja produzidos no Brasil.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE SOJA, 9., 2022, Foz do iguaçu, PR. Desafios para a produtividade sustentável no Mercosul: resumos. Brasília, DF: Embrapa, 2022. Regina Maria Villas Bôas de Campos Leite, Adeney de Freitas Bueno, editores técnicos. resumo 246.$c2022
300 $ap. 269.
650 $aGrains
650 $aPostharvest injuries
650 $aSoybeans
650 $aDano Mecânico
650 $aGrão
650 $aSoja
650 $aTeste de Tetrazólio
700 1 $aKRZYZANOWSKI, F. C.
700 1 $aLORINI, I.
700 1 $aHENNING, A. A.
700 1 $aHENNING, F. A.
700 1 $aOLIVEIRA, M. A. de
700 1 $aHIRAKURI, M. H.
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Embrapa Soja (CNPSO) |
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