Table 11.
Genetic correlations between growth traits, ultrasound traits, and carcass traits adjusted to a fixed carcass fatness endpoint1,2
| BWT | WWT | PWWT | ADG50 | ADG100 | |
|---|---|---|---|---|---|
| HCW | 0.11 ± 0.07 | 0.21 ± 0.06 | 0.18 ± 0.05 | 0.20 ± 0.06 | 0.11 ± 0.06 |
| SMY | −0.14 ± 0.07 | −0.19 ± 0.05 | −0.22 ± 0.05 | −0.18 ± 0.05 | −0.15 ± 0.06 |
| LEG | −0.08 ± 0.06 | −0.10 ± 0.05 | −0.17 ± 0.05 | −0.09 ± 0.05 | −0.16 ± 0.05 |
| LOIN | −0.19 ± 0.07 | −0.19 ± 0.05 | −0.19 ± 0.05 | −0.18 ± 0.06 | −0.14 ± 0.06 |
| SHOUL | −0.22 ± 0.06 | −0.23 ± 0.05 | −0.24 ± 0.05 | −0.22 ± 0.05 | −0.15 ± 0.06 |
| AVGCONF | −0.19 ± 0.06 | −0.18 ± 0.05 | −0.24 ± 0.05 | −0.18 ± 0.05 | −0.21 ± 0.05 |
| CINDEX | −0.08 ± 0.07 | −0.20 ± 0.06 | −0.23 ± 0.06 | −0.21 ± 0.06 | −0.17 ± 0.06 |
| PRICE | 0.06 ± 0.07 | 0.09 ± 0.06 | 0.06 ± 0.06 | 0.09 ± 0.06 | 0.03 ± 0.06 |
| WTUS | EMDUSa | EMDUSw | FATUSa | FATUSw | |
| HCW | 0.13 ± 0.16 | 0.50 ± 0.21 | 0.33 ± 0.15 | 0.01 ± 0.17 | −0.11 ± 0.16 |
| SMY | −0.22 ± 0.14 | 0.20 ± 0.18 | 0.41 ± 0.13 | 0.16 ± 0.15 | 0.38 ± 0.15 |
| LEG | −0.25 ± 0.14 | 0.17 ± 0.18 | 0.38 ± 0.13 | 0.13 ± 0.14 | 0.35 ± 0.14 |
| LOIN | −0.24 ± 0.16 | −0.04 ± 0.20 | 0.16 ± 0.15 | 0.15 ± 0.17 | 0.41 ± 0.16 |
| SHOUL | −0.21 ± 0.15 | 0.35 ± 0.21 | 0.48 ± 0.14 | 0.21 ± 0.17 | 0.43 ± 0.16 |
| AVGCONF | −0.19 ± 0.14 | 0.17 ± 0.19 | 0.34 ± 0.13 | 0.25 ± 0.15 | 0.46 ± 0.14 |
| CINDEX | −0.09 ± 0.15 | 0.20 ± 0.19 | 0.30 ± 0.14 | 0.18 ± 0.16 | 0.28 ± 0.16 |
| PRICE | 0.12 ± 0.17 | 0.69 ± 0.19 | 0.56 ± 0.14 | 0.12 ± 0.18 | 0.03 ± 0.17 |
1Correlation coefficients are followed by their approximate standard error.
2ADG50 = pre-weaning average daily gain; ADG100 = post-weaning average daily gain; AVGCONF = average carcass conformation score; BWT = birthweight; CINDEX = carcass price grid value; EMDUS = ultrasonically measured eye muscle depth; FATUS = ultrasonically measured fat depth; HCW = hot carcass weight; LEG = leg carcass conformation score; LOIN = loin carcass conformation score; PRICE = total carcass value; PWWT = post-weaning weight; SHOUL = shoulder conformation score; SMY = predicted saleable meat yield; WTUS = scanning weight; WWT = weaning weight. Ultrasound eye muscle and fat depth measurements adjusted to a constant age (EMDUSa, FATUSa) or scanning weight (EMDUSw, FATUSw).