Table 2.
Items | Control | Antibiotic | Probiotics | Synbiotics | SEM | P-values |
---|---|---|---|---|---|---|
group | group | group | group | |||
Carcass weight (kg) | ||||||
65 days of age | 5.00ab | 4.71b | 5.27a | 4.82b | 0.108 | 0.006 |
95 days of age | 8.25a | 6.36b | 7.73ab | 7.32ab | 0.445 | 0.037 |
125 days of age | 13.83 | 16.40 | 14.60 | 16.25 | 0.817 | 0.091 |
Muscle percentage (%) | ||||||
65 days of age | 21.56 | 21.09 | 22.49 | 21.17 | 0.491 | 0.191 |
95 days of age | 21.23 | 20.67 | 22.00 | 21.51 | 0.389 | 0.130 |
125 days of age | 23.87a | 23.11ab | 23.53a | 22.44b | 0.236 | 0.002 |
Fat percentage (%) | ||||||
65 days of age | 12.14 | 12.10 | 13.31 | 11.78 | 0.396 | 0.052 |
95 days of age | 15.24a | 12.47b | 15.29a | 15.01a | 0.662 | 0.011 |
125 days of age | 17.73b | 21.49a | 22.28a | 20.89a | 0.548 | <0.0001 |
Bone percentage (%) | ||||||
65 days of age | 11.80 | 11.89 | 11.95 | 11.98 | 0.190 | 0.915 |
95 days of age | 10.13 | 10.44 | 10.57 | 9.99 | 0.273 | 0.424 |
125 days of age | 9.15 | 8.55 | 9.60 | 9.25 | 0.261 | 0.069 |
Leaf fat ratio (g/kg) | ||||||
65 days of age | 6.93 | 6.04 | 7.05 | 6.75 | 0.376 | 0.248 |
95 days of age | 11.41a | 8.09b | 7.77b | 11.17a | 0.587 | <0.0001 |
125 days of age | 16.77b | 17.88b | 21.54a | 19.33ab | 0.925 | 0.005 |
Backfat thickness (mm) | ||||||
65 days of age | 13.27b | 12.78b | 14.65a | 13.90ab | 0.396 | 0.014 |
95 days of age | 18.79 | 16.78 | 18.46 | 16.98 | 0.611 | 0.060 |
125 days of age | 24.75b | 28.81a | 27.53a | 28.15a | 0.832 | 0.009 |
Loin-eye muscle area (cm 2 ) | ||||||
65 days of age | 4.21 | 4.29 | 4.45 | 4.19 | 0.200 | 0.788 |
95 days of age | 4.33ab | 4.22b | 4.39ab | 5.01a | 0.200 | 0.038 |
125 days of age | 7.20a | 7.36a | 7.67a | 5.57b | 0.282 | <0.0001 |
Data are presented as means with pooled SEM. Values in the same row with different superscript letters were significantly different (P < 0.05). The replicates per group at 65 and 95 days of age were 8; at 125 days of age, the replicates of the control group, antibiotic group, probiotics group, and synbiotics group were 8, 6, 8, and 6, respectively.