Table 4.
Product quality traits of Longissimus thoracis et lumborum muscle divergent in feed efficiency (FE)
| Trait | High-FEa | Low-FEa | SE | P-value |
|---|---|---|---|---|
| Fat depth (mm) | 14.6 | 15.5 | 0.95 | 0.364 |
| Muscle depth (mm) | 54.6 | 56.8 | 2.36 | 0.367 |
| Lean (%) | 56.2 | 55.5 | 0.87 | 0.477 |
| IMF (%) | 1.49 | 1.89 | 0.19 | 0.046 |
| Drip loss (%) | 4.71 | 4.16 | 0.68 | 0.428 |
| WBSF day 1 pm (N)b | 37.0 | 31.8 | 2.33 | 0.036 |
| WBSF day 7 pm (N)b | 28.9 | 26.4 | 1.46 | 0.089 |
| Cook loss day 1 pm (%) | 36.4 | 34.0 | 0.67 | 0.001 |
| Cook loss day 7 pm (%) | 37.8 | 37.2 | 0.58 | 0.250 |
aLeast square means for each trait; bWBSF Warner Bratzler shear force (higher values indicate decreased tenderness).