Table 5.
Growth performance of broiler chickens according to soybean lecithin inclusion level in the grower and finisher diets.
| Item | Dietary treatments |
RSE | P value | ||||
|---|---|---|---|---|---|---|---|
| T1 | T2 | T3 | T4 | T5 | |||
| Starter period (0–14 D)1 | |||||||
| BW 0 d (g) | 42.09 | 41.98 | 42.03 | 42.09 | 42.10 | 0.176 | 0.337 |
| BW 14 d (g) | 453 | 459 | 454 | 456 | 459 | 13.8 | 0.792 |
| ADFI (g/d/bird) | 40.5 | 40.4 | 40.4 | 39.8 | 40.4 | 1.07 | 0.571 |
| ADG (g/d/bird) | 29.4 | 29.8 | 29.4 | 29.6 | 29.8 | 0.99 | 0.812 |
| FCR (g/g) | 1.37 | 1.37 | 1.36 | 1.35 | 1.35 | 0.030 | 0.305 |
| Grower period (15–28 d)2 | |||||||
| BW 28 d (g) | 1,552 | 1,544 | 1,531 | 1,541 | 1,551 | 36.74 | 0.647 |
| ADFI (g/d/bird) | 121.6 | 120.3 | 120.1 | 119.5 | 121.8 | 2.65 | 0.182 |
| ADG (g/d/bird) | 77.7 | 77.6 | 76.9 | 77.8 | 78.4 | 0.07 | 0.436 |
| FCR (g/g) | 1.56 | 1.57 | 1.56 | 1.54 | 1.56 | 0.024 | 0.195 |
| Finisher period (29–39 d)3 | |||||||
| BW at 39 d (g) | 2,439 | 2,422 | 2,443 | 2,437 | 2,442 | 73.52 | 0.961 |
| ADFI (g/d/bird) | 173.1 | 173.5 | 174.7 | 174.5 | 175.5 | 6.59 | 0.909 |
| ADG (g/d/bird) | 81.2 | 78.5 | 83.3 | 81.2 | 80.7 | 5.27 | 0.324 |
| FCR (g/g) | 2.14 | 2.21 | 2.13 | 2.16 | 2.18 | 0.100 | 0.293 |
| Global period (0–39 d) | |||||||
| ADFI (g/d/bird) | 106.0 | 106.8 | 106.5 | 106.4 | 107.7 | 2.57 | 0.612 |
| ADG (g/d/bird) | 61.22 | 60.61 | 61.43 | 61.20 | 61.45 | 1.99 | 0.842 |
| FCR (g/g) | 1.74 | 1.76 | 1.74 | 1.73 | 1.75 | 0.03 | 0.154 |
Abbreviations: ADFI, average daily feed intake; ADG, average daily gain; BW, body weight; FCR, feed conversion ratio; RSE, residual standard error.
1
All pens consumed the same starter diet.
2
T1 = soybean oil (SO) at 2%; T2 = SO at 1.75% and soybean lecithin (SL) at 0.25%; T3 = SO at 1.50% and SL at 0.50%; T4 = SO at 1.25% and SL at 0.75%; T5 = SO at 1.00% and SL at 1.00%.
3
T1 = SO at 2.00%; T2 = SO at 1.50% and SL at 0.50%; T3 = SO at 1.00% and SL at 1.00%; T4 = SO at 0.50% and SL at 1.50%; T5 = SL at 2.00%.