Table 1.
Phenotypic analysis of cloned MSTN-KO Meishan pigs.
| Phenotype index | MSTN+/+ (n = 3) | MSTN+/− (n = 3) |
|---|---|---|
| Growth performance | ||
| ADWG (g/d) | 412.4 ± 10.10a | 447.7 ± 10.25b |
| FCR | 4.2 ± 0.08a | 3.71 ± 0.07b |
| Carcass performance | ||
| Longissimus size (cm2) | 31.17 ± 1.12a | 43.39 ± 2.69b |
| Backfat thickness (cm) | 2.49 ± 0.43a | 1.30 ± 0.21b |
| Lean ratio (%) | 49.40 ± 0.98a | 67.86 ± 1.32b |
| Meat quality | ||
| IMF (%) | 3.46 ± 0.16a | 1.28 ± 0.11b |
| Tenderness (N) | 68.10 ± 3.99a | 77.55 ± 3.28b |
| Hematology | ||
| LDL (mmol/L) | 1.52 ± 0.08a | 0.84 ± 0.07b |
| TG (mmol/L) | 0.44 ± 0.03a | 0.28 ± 0.02b |
Values with different superscripts in the same row are considered significantly different.
ADWG average daily weight gain, FCR feed conversion ratio, IMF intramuscular fat, LDL low-density lipoprotein, TG triglyceride.