Table 2.
Effects of feeding Bacillus licheniformis (BL) or/and olive cake meal (OCM) on growth performance and organ weights in broilers.
| Item | Control | OCM (2%) | OCM (4%) | BL | OCM (2%)/BL | OCM (4%)/BL | p Value | ||
|---|---|---|---|---|---|---|---|---|---|
| BL | OCM | BL × OCM | |||||||
| Initial body weight (g) | 46 ± 0.57 | 46 ± 0.41 | 45.5 ± 0.64 | 45.5 ± 0.28 | 45.3 ± 0.48 | 45.75 ± 0.63 | 0.061 | 0.12 | 0.23 |
| Body weight gain (WG, g/35 day) | 2010 ± 27 d | 2052 ± 13 cd | 2090 ± 34 bc | 2071 ± 11 bcd | 2137 ± 32 ab | 2180 ± 15 a | 0.041 | 0.032 | 0.002 |
| Feed intake (g/35 day) | 3487 ± 50 | 3428 ± 21 | 3447 ± 96 | 3410 ± 15 | 3455 ± 9 ± 35 | 3433 ± 29 | 0.25 | 0.32 | 0.21 |
| Feed conversion ratio (g feed/g WG) | 1.735 ± 0.01 a | 1.634 ± 0.02 ab | 1.670 ± 0.03 ab | 1.647 ± 0.02 ab | 1.617 ± 0.03 b | 1.575 ± 0.01 b | 0.034 | 0.041 | 0.035 |
| Mortality (%) | 1.66 ± 0.02 | 1.66 ± 0.03 | 1.66 ± 0.02 | 1.66 ± 0.02 | 1.66 ± 0.03 | 1.66 ± 0.03 | 0.78 | 0.82 | 0.72 |
| Organ weight (% body weight) | |||||||||
| Carcass | 67.9 ± 1.6 | 67.3 ± 1.3 | 68.9 ± 1.4 | 68.8 ± 1 | 69.9 ± 161 | 70.7 ± 1.1 | 0.12 | 0.23 | 0.22 |
| Breast muscle | 22.71 ± 0.31 | 22.37 ± 0.89 | 22.78 ± 0.89 | 23.06 ± 0.46 | 22.82 ± 0.64 | 23.13 ± 0.88 | 0.34 | 0.25 | 0.31 |
| Thigh muscle | 16.36 ± 0.52 | 16.1 ± 0.48 | 16.28 ± 0.53 | 16.45 ± 0.46 | 16.37 ± 0.16 | 16.2 ± 0.33 | 0.32 | 0.24 | 0.44 |
| Liver | 2.24 ± 0.12 | 2.32 ± 0.12 | 2.38 ± 0.06 | 2.23 ± 0.11 | 2.35 ± 0.21 | 2.39 ± 0.14 | 0.52 | 0.61 | 0.34 |
| Abdominal fat | 2.08 ± 0.11 a | 1.61 ± 0.22 b | 1.61 ± 0.17 b | 1.89 ± 0.17 ab | 1.47 ± 0.12 b | 1.42 ± 0.06 b | 0.025 | 0.011 | 0.033 |
a–d Means within the same row with different superscripts differ (p < 0.05). Results are presented as means ± SEM.