Application of single-step genomic evaluation using social genetic effect model for growth in pig

OBJECTIVE: Social genetic effects (SGE) are an important genetic component for growth, group productivity, and welfare in pigs. The present study was conducted to evaluate i) the feasibility of the single-step genomic best linear unbiased prediction (ssGBLUP) approach with the inclusion of SGE in th...

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Veröffentlicht in:Asian-Australasian journal of animal sciences. - 1998. - 32(2019), 12 vom: 10. Dez., Seite 1836-1843
1. Verfasser: Hong, Joon Ki (VerfasserIn)
Weitere Verfasser: Kim, Young Sin, Cho, Kyu Ho, Lee, Deuk Hwan, Min, Ye Jin, Cho, Eun Seok
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Asian-Australasian journal of animal sciences
Schlagworte:Journal Article Accuracy Breeding Value Landrace Single-step Genomic Best Linear Unbiased Prediction (BLUP) Social Genetic Effects Yorkshire
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520 |a OBJECTIVE: Social genetic effects (SGE) are an important genetic component for growth, group productivity, and welfare in pigs. The present study was conducted to evaluate i) the feasibility of the single-step genomic best linear unbiased prediction (ssGBLUP) approach with the inclusion of SGE in the model in pigs, and ii) the changes in the contribution of heritable SGE to the phenotypic variance with different scaling ω constants for genomic relationships 
520 |a METHODS: The dataset included performance tested growth rate records (average daily gain) from 13,166 and 21,762 pigs Landrace (LR) and Yorkshire (YS), respectively. A total of 1,041 (LR) and 964 (YS) pigs were genotyped using the Illumina PorcineSNP60 v2 BeadChip panel. With the BLUPF90 software package, genetic parameters were estimated using a modified animal model for competitive traits. Giving a fixed weight to pedigree relationships (τ: 1), several weights (ωxx, 0.1 to 1.0; with a 0.1 interval) were scaled with the genomic relationship for best model fit with Akaike information criterion (AIC) 
520 |a RESULTS: The genetic variances and total heritability estimates (T2) were mostly higher with ssGBLUP than in the pedigree-based analysis. The model AIC value increased with any level of ω other than 0.6 and 0.5 in LR and YS, respectively, indicating the worse fit of those models. The theoretical accuracies of direct and social breeding value were increased by decreasing ω in both breeds, indicating the better accuracy of ω0.1 models. Therefore, the optimal values of ω to minimize AIC and to increase theoretical accuracy were 0.6 in LR and 0.5 in YS 
520 |a CONCLUSION: In conclusion, single-step ssGBLUP model fitting SGE showed significant improvement in accuracy compared with the pedigree-based analysis method; therefore, it could be implemented in a pig population for genomic selection based on SGE, especially in South Korean populations, with appropriate further adjustment of tuning parameters for relationship matrices 
650 4 |a Journal Article 
650 4 |a Accuracy 
650 4 |a Breeding Value 
650 4 |a Landrace 
650 4 |a Single-step Genomic Best Linear Unbiased Prediction (BLUP) 
650 4 |a Social Genetic Effects 
650 4 |a Yorkshire 
700 1 |a Kim, Young Sin  |e verfasserin  |4 aut 
700 1 |a Cho, Kyu Ho  |e verfasserin  |4 aut 
700 1 |a Lee, Deuk Hwan  |e verfasserin  |4 aut 
700 1 |a Min, Ye Jin  |e verfasserin  |4 aut 
700 1 |a Cho, Eun Seok  |e verfasserin  |4 aut 
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