| Parameters | Food processing | P-value | |||||
| PBO | PB1 | PB2 | PB3 | PB4 | |||
| Carcass | Lw (g) | 1185.40 ± 137.49 | 1200.85 ± 80.69 | 1134.87 ± 185.72 | 1065.18 ± 82.51 | 1086.27 ± 39.72 | 0.001 |
| Cw (g) | 1082.57 ± 108.10 | 1106.18 ± 106.51 | 1039.53 ± 194.38 | 961.95 ± 64.01 | 976.50 ± 28.75 | 0.001 | |
| Cy (%) | 91.45 ± 3 | 91.99 ± 2.78 | 63.15 ± 2.38 | 90.37 ± 1.33 | 89.91 ± 44.96 | 0.001 | |
| Skin color | 1.00 ± 0 | 1.00 ± 0 | 1.00 ± 0 | 1.00 ± 0 | 1.00 ± 0 | Ns | |
| Belly fat color | 1.00 ± 0 | 1.00 ± 0 | 2.00 ± 0 | 2.00 ± 0 | 2.00 ± 0 | Ns | |
| Internal organs (g) | Liver | 24.23 ± 6.43 | 27 ± 2.41 | 25.87 ± 2.91 | 19.93 ± 1.71 | 23.10 ± 0.4 | 0.28 |
| Heart | 5.33 ± 0.40 | 6.93 ± 0.82 | 6.70 ± 3.86 | 4.80 ± 0.49 | 4.53 ± 0.25 | 0.49 | |
| Rat | 2.63 ± 0.50 | 2.23 ± 1.05 | 1.70 ± 0.46 | 1.85 ± 0.47 | 2.73 ± 0.55 | 0.82 | |
| Gizzard | 46.90 ± 14.25 | 48.9 ± 0.69 | 43.40 ± 15.72 | 40.93 ± 9.66 | 44.60 ± 11.98 | 0.50 | |
| Testicles | 4.40 ± 2.62 | 1.95 ± 13.24 | 3.80 ± 5.83 | 3.75 ± 3.04 | 3.47 ± 1.29 | 0.36 | |
| Physicochemical parameters | pH | 5.80 ± 0.36 | 6.345 ± 0.58 | 6.25 ± 0.37 | 6.25 ± 0.37 | 6.125 ± 0.33 | 0.99 |
| Temperature | 31.57 ± 0.32 | 31.175 ± 0.85 | 31.30 ± 0.66 | 31.23 ± 0.88 | 32.175 ± 0.72 | 0.90 | |