Table 5.
Regression equations to predict the carcass chemical fat (CFch) and empty body chemical fat (EBFch)1
| Statistic | |||||
|---|---|---|---|---|---|
| Equation no. | Equation2 | No. | RMSE3 | r 2 | P-value |
| CFch, kg | |||||
| [32] | CFch = −26.57832 (5.34680†) + 0.17635 (0.01285†) × SBW | 39 | 7.87 | 0.831 | <0.0001 |
| [33] | CFch = 11.03675 (2.89406†) + 2.74138 (0.20448†) × SF | 39 | 8.46 | 0.825 | <0.0001 |
| [34] | CFch = 9.24595 (2.29708†) + 39.18126 (2.19905†) × HHF | 39 | 6.67 | 0.896 | <0.0001 |
| [35] | CFch = −124.58706 (11.16720†) + 1.48117 (0.50238**) × HBW + 1.58685 (0.31338†) × RD | 38 | 7.04 | 0.866 | <0.0001 |
| [36] | CFch = −14.25500 (5.72338*) + 0.11260 (0.002067†) × SBW + 1.06169 (0.29013†) × SF | 39 | 6.81 | 0.874 | <0.0001 |
| [37] | CFch = 0.04119 (0.00875†) × SBW + 31.16144 (3.50651†) × HHF | 39 | 6.32 | 0.983 | <0.0001 |
| [38] | CFch = 36.22536 (2.42635†) × HHF + 1.18618 (0.41119**) × HBW − 0.23176 (0.10276*) × GC | 39 | 6.13 | 0.985 | <0.0001 |
| [39] | CFch = −83.80479 (15.38547†) + 0.99235 (0.25591†) × SF + 1.03508 (0.30240**) × RD + 1.05872 (0.45477*) × PGL | 38 | 5.97 | 0.904 | <0.0001 |
| EBFch, kg | |||||
| [40] | EBFch = −44.23711 (7.68119†) + 0.31118 (0.01847†) × SBW | 39 | 11.31 | 0.882 | <0.0001 |
| [41] | EBFch = 7.95763 (2.20494†) + 1.63143 (0.04460†) × CFch | 39 | 5.54 | 0.972 | <0.0001 |
| [42] | EBFch = 20.40204 (3.19200†) + 67.66538 (3.05578†) × HHF | 39 | 9.27 | 0.928 | <0.0001 |
| [43] | EBFch = −22.86750 (7.92366**) + 0.19657 (0.02856†) × SBW + 2.01026 (0.39413†) × SF | 40 | 9.43 | 0.924 | <0.0001 |
| [44] | EBFch = 0.09081 (0.01110†) × SBW + 49.99575 (4.4559†) × HHF | 39 | 8.02 | 0.992 | <0.0001 |
| [45] | EBFch = −214.54508 (19.34077†) + 3.58432 (0.86318†) × HBW + 2.10080 (0.53683†) × RD | 39 | 12.2 | 0.862 | <0.0001 |
| [46] | EBFch = −103.10948 (27.55943†) + 0.23388 (0.04474†) × SBW + 2.06942 (0.97643*) × HBW | 40 | 11.6 | 0.884 | <0.0001 |
| [47] | EBFch = −55.21285 (19.73035†) + 51.00698 (5.03122†) × HHF + 2.06807 (0.53448†) × HBW | 39 | 7.89 | 0.945 | <0.0001 |
1
Values within parentheses are SE of the parameter estimate. Intercepts that were not different from 0 were removed from the final equation.
2
SBW = shrunk BW (kg); SF = subcutaneous fat (kg); HHF = 9th to 11th rib section fat (kg); HBW = hook bone width (cm); RD = rib depth (cm); GC = girth circumference (cm); PGL = pelvic girdle length (cm).
3
RMSE = root mean square error.
*P < 0.05; **P < 0.01; †P < 0.001.