Table 2.
Treatments | Day 1–7 |
Day 1–21 |
Day 1-42 |
||||||
---|---|---|---|---|---|---|---|---|---|
BWG (g) | FI (g) | FCR | BWG (g) | FI (g) | FCR | BWG (g) | FI (g) | FCR | |
Positive control (PC)1 | 118.1 | 142.1 | 1.201 | 813.8a | 1,089.8 | 1.342b | 2,886.2a | 4,492.5 | 1.556b |
Negative control (NC)1 | 115.2 | 143.1 | 1.241 | 753.1b | 1,080.3 | 1.436a | 2,742.8b | 4,471.0 | 1.631a |
NC + Amylase2 | 114.8 | 143.4 | 1.249 | 766.3a,b | 1,076.9 | 1.407a | 2,803.5a,b | 4,403.0 | 1.571b |
NC + Amylase + Xylanase2 | 117.2 | 148.2 | 1.265 | 769.8a,b | 1,083.1 | 1.408a | 2,825.6a,b | 4,421.6 | 1.565b |
NC + Amylase + Xylanase + Protease2 | 116.8 | 144.4 | 1.234 | 776.2a,b | 1,070.9 | 1.380a,b | 2,787.2a,b | 4,423.2 | 1.588a,b |
Average of treatments with enzymes | 116.3 | 145.3 | 1.249 | 770.8 | 1,076.9 | 1.398 | 2,805.4 | 4,415.9 | 1.575 |
Temperature (°C) | |||||||||
80 | 116.0 | 141.0 | 1.215B | 772.6 | 1,074.0 | 1.391 | 2805.6 | 4446.4 | 1.586 |
110 | 116.8 | 147.5 | 1.261A | 779.1 | 1,086.4 | 1.398 | 2812.6 | 4438.0 | 1.579 |
SEM | 0.814 | 1.742 | 0.011 | 5.644 | 5.728 | 0.008 | 13.281 | 20.595 | 0.007 |
P value | |||||||||
Treatment | 0.718 | 0.841 | 0.473 | 0.010 | 0.888 | 0.001 | 0.013 | 0.648 | 0.007 |
Temperature | 0.655 | 0.074 | 0.045 | 0.547 | 0.302 | 0.625 | 0.782 | 0.844 | 0.608 |
Treatment x Temperature | 0.852 | 0.805 | 0.345 | 0.863 | 0.653 | 0.332 | 0.801 | 0.678 | 0.972 |
Means followed by distinct small and capital letters in the same column are different (P ≤ 0.05) by Tukey's and F's test, respectively.
Abbreviations: BWG, body weight gain; FCR, feed conversion ratio; FI, feed intake.
PC, positive control (meeting the nutritional requirements of broilers without the enzyme inclusion); NC, negative control (reduction of 100 kcal/kg).
Amylase (RONOZYME HiStarch, 80 KNU/kg), xylanase (RONOZYME WX, 100 FXU/kg), and protease (RONOZYME ProAct, 15,000 PROT/kg).