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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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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
03/10/2022 |
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Data da última atualização: |
03/10/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COMIN, H.; CAMPOS, G. S.; DOMINGUES, R.; GASPAR, E. B.; SOLLERO, B. P.; CARDOSO, F. F. |
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Afiliação: |
HELENA B. COMIN, Universidade Federal de Pelotas; G. S. CAMPOS, Universidade Estadual Paulista; ROBERT DOMINGUES, CPPSUL; EMANUELLE BALDO GASPAR, CPPSUL; BRUNA PENA SOLLERO, GPM; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Genetic parameters and accuracy of traditional and genomic breeding values for resistance to infectious bovine keratoconjunctivitis in Hereford. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Livestock Science, v. 264, 105078, Oct. 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
A B S T R A C T The objectives of this research were to estimate genetic parameters using a threshold animal model by traditional (pedigree and phenotype), single-step genomic BLUP (ssGBLUP) and Weighted ssGBLUP (WssGBLUP) methods, and assess the relative increase in accuracy with the addition of genomic information on the estimation of breeding values for the incidence of infectious bovine keratoconjunctivitis (IBK) in Hereford cattle. The data used in this study were obtained from animals belonging to four farms of Delta G breeders association and genetically evaluated by the Delta G breeding program, born between 2015 and 2017, totaling 293,716 individuals in the pedigree data and 1,579 phenotypes for IBK (1 = absence of disease or 2 = presence of disease). The genotypic data, after quality control, retained 37,505 SNP markers and 1,401 samples. A Bayesian framework and a threshold animal model were used to estimate variance components and to predict breeding values. Animals with genotype and phenotype for the traits studied were divided into 3 groups by random and k-means clustering cross-validation strategies. The estimate of direct heritability for resistance to IBK was 0.12 ± 0.01 and 0.10 ± 0.01 through PBLUP and ssGBLUP methods. The mean realized prediction accuracies based on linear regression statistics were 0.36, 0.65 and 0.70, respectively for PBLUP, ssGBLUP and WssGBLUP; therefore, the use of the genomic relationship matrices was superior to the pedigree-based method. When using the WssGBLUP method, there was an additional increase in prediction accuracy when compared to the ssGBLUP method, which was already substantially better than PBLUP. The prediction of breeding values using genomic information by the single-step methods should result in more accurate selection decisions compared to traditional pedigree evaluations and, consequently, genomic selection can be readily applied with moderately high reliability to help reduce the incidence of IBK in Hereford cattle. MenosA B S T R A C T The objectives of this research were to estimate genetic parameters using a threshold animal model by traditional (pedigree and phenotype), single-step genomic BLUP (ssGBLUP) and Weighted ssGBLUP (WssGBLUP) methods, and assess the relative increase in accuracy with the addition of genomic information on the estimation of breeding values for the incidence of infectious bovine keratoconjunctivitis (IBK) in Hereford cattle. The data used in this study were obtained from animals belonging to four farms of Delta G breeders association and genetically evaluated by the Delta G breeding program, born between 2015 and 2017, totaling 293,716 individuals in the pedigree data and 1,579 phenotypes for IBK (1 = absence of disease or 2 = presence of disease). The genotypic data, after quality control, retained 37,505 SNP markers and 1,401 samples. A Bayesian framework and a threshold animal model were used to estimate variance components and to predict breeding values. Animals with genotype and phenotype for the traits studied were divided into 3 groups by random and k-means clustering cross-validation strategies. The estimate of direct heritability for resistance to IBK was 0.12 ± 0.01 and 0.10 ± 0.01 through PBLUP and ssGBLUP methods. The mean realized prediction accuracies based on linear regression statistics were 0.36, 0.65 and 0.70, respectively for PBLUP, ssGBLUP and WssGBLUP; therefore, the use of the genomic relationship matrices was superior to the pedigree-based ... Mostrar Tudo |
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Palavras-Chave: |
Resistência a doença; Seleção genômica. |
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Thesagro: |
Gado de Corte; Parâmetro Genético. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02742naa a2200229 a 4500
001 2147076
005 2022-10-03
008 2022 bl uuuu u00u1 u #d
100 1 $aCOMIN, H.
245 $aGenetic parameters and accuracy of traditional and genomic breeding values for resistance to infectious bovine keratoconjunctivitis in Hereford.$h[electronic resource]
260 $c2022
520 $aA B S T R A C T The objectives of this research were to estimate genetic parameters using a threshold animal model by traditional (pedigree and phenotype), single-step genomic BLUP (ssGBLUP) and Weighted ssGBLUP (WssGBLUP) methods, and assess the relative increase in accuracy with the addition of genomic information on the estimation of breeding values for the incidence of infectious bovine keratoconjunctivitis (IBK) in Hereford cattle. The data used in this study were obtained from animals belonging to four farms of Delta G breeders association and genetically evaluated by the Delta G breeding program, born between 2015 and 2017, totaling 293,716 individuals in the pedigree data and 1,579 phenotypes for IBK (1 = absence of disease or 2 = presence of disease). The genotypic data, after quality control, retained 37,505 SNP markers and 1,401 samples. A Bayesian framework and a threshold animal model were used to estimate variance components and to predict breeding values. Animals with genotype and phenotype for the traits studied were divided into 3 groups by random and k-means clustering cross-validation strategies. The estimate of direct heritability for resistance to IBK was 0.12 ± 0.01 and 0.10 ± 0.01 through PBLUP and ssGBLUP methods. The mean realized prediction accuracies based on linear regression statistics were 0.36, 0.65 and 0.70, respectively for PBLUP, ssGBLUP and WssGBLUP; therefore, the use of the genomic relationship matrices was superior to the pedigree-based method. When using the WssGBLUP method, there was an additional increase in prediction accuracy when compared to the ssGBLUP method, which was already substantially better than PBLUP. The prediction of breeding values using genomic information by the single-step methods should result in more accurate selection decisions compared to traditional pedigree evaluations and, consequently, genomic selection can be readily applied with moderately high reliability to help reduce the incidence of IBK in Hereford cattle.
650 $aGado de Corte
650 $aParâmetro Genético
653 $aResistência a doença
653 $aSeleção genômica
700 1 $aCAMPOS, G. S.
700 1 $aDOMINGUES, R.
700 1 $aGASPAR, E. B.
700 1 $aSOLLERO, B. P.
700 1 $aCARDOSO, F. F.
773 $tLivestock Science$gv. 264, 105078, Oct. 2022.
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Embrapa Pecuária Sul (CPPSUL) |
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| 15. |  | OLIVEIRA, K. da S. V.; TEIXEIRA, B. B.; CARDOSO, F. F.; SOLLERO, B. P. Comparações entre touros jovens e provados como disseminadores de potencial genético. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 11., 2015, Santa Maria, RS. Melhoramento animal da academia ao campo: uma parceria em construção: anais. Santa Maria, RS: SBMA: UFSM, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 18. | | SOLLERO, B. P.; CARDOSO, F. F.; GASPAR, E. B.; MINHO, A. P.; GULIAS-GOMES, C. C. A genômica como alternativa para enfrentar problemas sanitários de bovinos de corte: o melhoramento genético, potencializado pelas ferramentas genômicas, surge como alternativa promissora para o aumento da eficiência produtiva. Beefworld, Campinas, ano 4, n. 16, p. 86-88, jun./jul. 2015.| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 20. | | SANTOS, P. A. dos; REIMANN, F. A.; SOLLERO, B. P.; MINHO, A. P.; CARDOSO, F. F. Identificação de genes candidatos relacionados ao carcinoma ocular bovino de acordo com a base de dados MESH (Medical Subject Headings). In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 7., 2017, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2017. p. 25. Claudia Cristina Gulias Gomes, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 71 | |
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