Table 5.
Accuracy of prediction of phenotypes in cross-validation
| Breed | Model | Parameter | Trait | |||
|---|---|---|---|---|---|---|
| CI | Milk yield | Fat yield | Protein yield | |||
| Holstein | A | BV | 0.080 (0.008) | 0.346 (0.011) | 0.270 (0.017) | 0.266 (0.018) |
| A + D | BV | 0.080 (0.008) | 0.347 (0.011) | 0.270 (0.017) | 0.267 (0.018) | |
| DV | 0.025 (0.014) | 0.038 (0.014) | 0.038 (0.003) | 0.035 (0.008) | ||
| BV + DV | 0.082 (0.011) | 0.348 (0.011) | 0.273 (0.017) | 0.269 (0.018) | ||
| A vs. A + D | P value (BVA vs. BVA + D) | 0.9476 | 0.0169 | 0.4517 | 0.2360 | |
| P value (BVA vs. [BV + DV]A + D) | 0.5456 | 0.0694 | 0.0060 | 0.0202 | ||
| Jersey | A | BV | 0.094 (0.007) | 0.368 (0.017) | 0.243 (0.025) | 0.256 (0.025) |
| A + D | BV | 0.094 (0.007) | 0.367 (0.018) | 0.244 (0.026) | 0.255 (0.026) | |
| DV | 0.005 (0.014) | 0.046 (0.006) | 0.059 (0.018) | 0.071 (0.015) | ||
| BV + DV | 0.094 (0.007) | 0.370 (0.017) | 0.250 (0.024) | 0.262 (0.023) | ||
| A vs. A + D | P value (BVA vs. BVA + D) | 0.6069 | 0.8485 | 0.7820 | 0.6068 | |
| P value (BVA vs. [BV + DV]A + D) | 0.6000 | 0.1275 | 0.1355 | 0.1727 | ||
Average correlations between estimated genetic effects (breeding values [BV], dominance deviations [DV] or total genetic values [BV + DV]) obtained from models A (additive effects only) and A + D (additive and dominance effects) and adjusted phenotypes for calving interval (CI), milk, fat and protein yield in Holstein and Jersey cows based on fivefold cross validation
Standard errors (SE) in parentheses