| Live weight | Level of significance | |||
|---|---|---|---|---|
| Light | Medium | Heavy | ||
| Muscle fiber area (μm2) | ||||
| Mean | 3,716b (91.4)1 | 4,008b (126) | 4,452a (156) | *** |
| Type I fiber | 2,990 (120) | 3,112 (158) | 2,979 (203) | NS |
| Type IIA fiber | 2,322b (104) | 2,435b (137) | 2,999a (178) | ** |
| Type IIB fiber | 4,077b (112) | 4,209b (141) | 4,827a (191) | ** |
| Total Fiber number (×1000) | 1,188b (39.4) | 1,316a (51.0) | 1,436a (72.2) | *** |
| Area percentage of fiber type (%) | ||||
| Type I fiber | 6.19 (0.44) | 6.13 (0.58) | 6.54 (0.75) | NS |
| Type IIA fiber | 7.08 (0.47) | 6.66 (0.61) | 7.19 (0.80) | NS |
| Type IIB fiber | 86.7 (0.62) | 87.2 (0.80) | 86.3 (1.05) | NS |
| Number percentage of fiber type (%) | ||||
| Type I fiber | 7.83 (0.57) | 7.78 (0.74) | 9.71 (0.96) | NS |
| Type IIA fiber | 11.5 (0.76) | 11.0 (1.00) | 10.7 (1.29) | NS |
| Type IIB fiber | 80.7 (0.80) | 81.2 (1.05) | 79.6 (1.37) | NS |