Table 2 List of 13 experimental treatments of the Box-Behnken design offered to broiler chickens over 7–28 d post-hatch
Treatments | Phytase, FTU/kg | Crude protein, % | Cracked maize, % |
|---|---|---|---|
1 | 0 | 17 | 15 |
2 | 0 | 19.5 | 0 |
3 | 0 | 19.5 | 30 |
4 | 0 | 22 | 15 |
5 | 750 | 17 | 0 |
6 | 750 | 17 | 30 |
7 | 750 | 19.5 | 15 |
8 | 750 | 22 | 0 |
9 | 750 | 22 | 30 |
10 | 1500 | 17 | 15 |
11 | 1500 | 19.5 | 0 |
12 | 1500 | 19.5 | 30 |
13 | 1500 | 22 | 15 |