Table 8.
Accuracy and bias of genomic selection using cows of one breed to predict bulls of the other breed and the relationship matrix using either the whole set of 71,726 SNPs (G W) or the SNPs with effects in the same directions in both breeds (G S) or the SNPs with effects in different directions in both breeds (G D)
| Phenotype | BB cows: TC bulls | TC cows: BB bulls | ||||
|---|---|---|---|---|---|---|
| G W | G S | G D | G W | G S | G D | |
| Accuracy | ||||||
| Navel score | 0.32 | 0.46 | −0.09 | 0.14 | 0.20 | −0.12 |
| Coat score | 0.08 | 0.23 | −0.20 | 0.09 | 0.05 | 0.03 |
| Coat colour | −0.06 | 0.13 | −0.17 | 0.05 | 0.27 | −0.26 |
| Body condition | 0.22 | 0.18 | 0.07 | 0.10 | 0.15 | −0.02 |
| Yearling weight | 0.09 | 0.18 | −0.04 | 0.10 | 0.21 | −0.05 |
| Average | 0.13 | 0.24 | −0.09 | 0.10 | 0.18 | −0.08 |
| Bias | ||||||
| Navel score | 1.95 | 1.93 | −0.71 | 0.43 | 0.45 | −0.49 |
| Coat score | 0.82 | 0.93 | −1.25 | 0.41 | 0.26 | 0.10 |
| Coat colour | −0.50 | 0.84 | −1.24 | 0.46 | 1.04 | −1.15 |
| Body condition | 1.04 | 0.44 | −0.07 | 0.47 | 0.39 | −0.07 |
| Yearling weight | 1.32 | 1.00 | −0.25 | 0.70 | 0.91 | −0.29 |
| Average | 1.13 | 1.03 | −0.71 | 0.49 | 0.61 | −0.45 |