Table 2. Effects of broilers fed diets containing graded levels of enzyme cocktail on growth performance1)
Item | Enzyme cocktail (g/kg)2) | SEM | p-value |
0 | 0.2 | 0.3 | 20 | Linear | Quadratic |
1–21 d | | | | | | | |
BWG (g/bird) | 654 | 696 | 689 | 693 | 13.8 | 0.079 | 0.186 |
FI (g/bird) | 1,035 | 1,078 | 1,042 | 1,060 | 13.2 | 0.522 | 0.370 |
FCR | 1.59 | 1.55 | 1.52 | 1.54 | 0.03 | 0.207 | 0.449 |
22–35 d | | | | | | | |
BWG (g/bird) | 1,362 | 1,372 | 1,363 | 1,369 | 41.6 | 0.409 | 0.530 |
FI (g/bird) | 2,473 | 2,427 | 2,353 | 2,429 | 67.1 | 0.492 | 0.368 |
FCR | 1.81 | 1.77 | 1.74 | 1.78 | 0.04 | 0.084 | 0.065 |
Overall | | | | | | | |
BWG (g/bird) | 2,015 | 2,068 | 2,051 | 2,062 | 43.8 | 0.181 | 0.311 |
FI (g/bird) | 3,509 | 3,505 | 3,394 | 3,489 | 67.3 | 0.575 | 0.469 |
FCR | 1.74 | 1.70 | 1.66 | 1.70 | 0.02 | 0.007 | 0.013 |
Each mean represents values from 10 replicates (15 birds/replicate).
Mannanase + β-glucanase + xylanase.
BWG, bodyweight gain; FI, feed intake; FCR, feed conversion ratio.