Table 2.
Number of records and means for carcass dissection and measures traits1 and estimates of phenotypic variances and heritability (h2)2
| Trait | No. | Mean | Phenotypic variance | CV (%) | Heritability (h2) |
|---|---|---|---|---|---|
| Carcass measures | |||||
| HCW, kg | 1331 | 21.1 | 5.03 | 10.6 | 0.35 ± 0.10 |
| DP, % | 1262 | 43.6 | 6.53 | 5.9 | 0.21 ± 0.11 |
| FATGR, mm | 1336 | 10.7 | 10.95 | 30.9 | 0.23 ± 0.11 |
| FATC, mm | 1281 | 3.3 | 2.58 | 49.1 | 0.29 ± 0.10 |
| FAT5, mm | 1288 | 5.6 | 4.60 | 38.0 | 0.21 ± 0.08 |
| EMW, mm | 1289 | 59.5 | 14.51 | 6.4 | 0.29 ± 0.09 |
| EMD, mm | 1289 | 27.4 | 8.38 | 10.6 | 0.12 ± 0.08 |
| EMA, cm2 | 1289 | 13.1 | 3.18 | 13.6 | 0.19 ± 0.08 |
| Carcass dissection | |||||
| LMY, % | 1249 | 58.4 | 3.891 | 3.4 | 0.29 ± 0.11 |
| WTLL, g | 1292 | 319.4 | 2205.9 | 14.7 | 0.46 ± 0.10 |
| WTTOP, g | 1291 | 541.3 | 3700.5 | 11.2 | 0.34 ± 0.11 |
| WTRND, g | 1293 | 426.9 | 2054.0 | 10.6 | 0.38 ± 0.11 |
| FATLL, g | 1290 | 159.0 | 3015.9 | 34.5 | 0.17 ± 0.10 |
| BONE, g | 1289 | 912.4 | 7757.5 | 9.7 | 0.29 ± 0.11 |
1HCW = hot carcass weight; DP = dressing percent, FATGR = carcass fat depth at the GR site; FATC = carcass fat depth at the C site; FAT5 = carcass fat depth at the 5th rib; EMW = eye muscle width; EMD = eye muscle depth; EMA = eye muscle area; LMY = lean meat yield; WTLL = loin muscle weight; WTTOP = topside weight; WTRND = round weight; FATLL = weight of fat trim of the loin; BONE = hind leg bone weight.
2Source: Mortimer et al. (2017b).