Itema,b | Control | CB1 | CB2 | CB3 | Antibiotic | Pooled SE | P-value |
|---|
Dressing (%) | 90.5 | 89.3 | 90.0 | 89.7 | 88.8 | 0.4 | 0.0764 |
Abdominal fat (%) | 1.50ab | 1.23c | 1.30bc | 1.27c | 1.57a | 0.08 | 0.0339 |
Eviscerated yield (%) | 71.2 | 71.5 | 71.8 | 72.1 | 72.0 | 0.6 | 0.8087 |
Breast muscle (%) | 26.8b | 27.8b | 28.0ab | 29.9a | 27.5 b | 0.7 | 0.0367 |
Thigh muscle (%) | 22.5 | 22.0 | 21.8 | 22.3 | 21.2 | 0.5 | 0.4417 |
- Means with different letters within the same row differ (P < 0.05).
- Control = basal diet; CB1 = the basal diet supplemented with 2.5 × 108 cfu of C. butyricum/kg; CB2 = the basal diet supplemented with 5 × 108 cfu of C. butyricum/kg; CB3 = the basal diet supplemented with 1 × 109 cfu of C. butyricum/kg; Antibiotic = the basal diet supplemented with 150 mg of aureomycin/kg.
- aEach value represents the mean of 8 cages with one chick per cage (n = 8 per treatment).
- bDressing, abdominal fat and eviscerated yield percentages were calculated by dividing these traits by final live weight after fasting. The percentages of breast muscle and thigh muscle were calculated as a percentage of eviscerated carcass weight.
