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Table 4 Accuracy and unbiasedness of genomic prediction of growth and reproductive traits performed with the BayesC π method as assessed with 20 replicates of five-fold CV

From: The superiority of multi-trait models with genotype-by-environment interactions in a limited number of environments for genomic prediction in pigs

Population1 Method2 Measurement3 AGE4 BFT4 NBA4 TNB4
Beijing ST-BayesC π _single Accuracy 0.306 ± 0.028a 0.328 ± 0.023a 0.156 ± 0.032a 0.179 ± 0.035a
Unbiasedness 1.218 ± 0.278 1.013 ± 0.212 1.182 ± 0.343 1.112 ± 0.302
ST-BayesC π _combined Accuracy 0.304 ± 0.032a 0.328 ± 0.038a 0.154 ± 0.035a 0.180 ± 0.034a
Unbiasedness 1.287 ± 0.265 0.853 ± 0.274 1.152 ± 0.362 1.124 ± 0.293
MT-BayesC π Accuracy 0.312 ± 0.035b 0.347 ± 0.026b 0.183 ± 0.029b 0.201 ± 0.031b
Unbiasedness 1.160 ± 0.217 1.056 ± 0.224 1.065 ± 0.236 0.992 ± 0.272
Fujian ST-BayesC π _single Accuracy 0.243 ± 0.023a 0.262 ± 0.024a 0.164 ± 0.043a 0.152 ± 0.044a
Unbiasedness 1.052 ± 0.263 1.032 ± 0.232 1.115 ± 0.321 1.076 ± 0.362
ST-BayesC π _combined Accuracy 0.244 ± 0.025a 0.264 ± 0.028a 0.165 ± 0.047a 0.154 ± 0.047a
Unbiasedness 0.874 ± 0.134 1.330 ± 0.254 1.245 ± 0.308 1.222 ± 0.353
MT-BayesC π Accuracy 0.275 ± 0.024b 0.284 ± 0.021b 0.181 ± 0.051b 0.183 ± 0.049b
Unbiasedness 1.034 ± 0.197 1.088 ± 0.256 1.143 ± 0.363 1.059 ± 0.345
  1. 1 Yorkshire pig populations from Beijing and Fujian with similar genetic backgrounds
  2. 2 ST-GBLUP_single: single-trait GBLUP model with a single population as the reference population; ST-GBLUP_combined: single-trait GBLUP model two populations combined as the reference population; MT-GBLUP: multi-trait GBLUP model in which values of the same trait in different populations were considered different traits
  3. 3 Accuracy: the correlation between GEBVs and corrected phenotypic values in the validation population; Unbiasedness: the regression of corrected phenotypic values on GEBVs
  4. 4 AGE: days to 100 kg; BFT: backfat thickness at 100 kg; NBA: number of piglets born alive; TNB: total number of piglets born
  5. a, b Values with different superscript letters significantly differ (P < 0.05)