Table 1.
Ingredient composition and formulated analysis for 3 phase diets fed to female broilers.
| Ingredient (%) | Phase 1 (0–13 d) | Phase 2 (14–27 d) | Phase 3 (28–42 d) |
|---|---|---|---|
| Corn1 (orange, yellow, white) | 57.66 | 63.76 | 66.90 |
| Soybean meal (48%) | 35.27 | 29.68 | 26.30 |
| Soybean oil | 3.00 | 3.00 | 3.52 |
| Salt | 0.48 | 0.46 | 0.48 |
| DL-methionine | 0.24 | 0.21 | 0.12 |
| L-lysine HCl | 0.11 | 0.10 | 0.02 |
| L-threonine | 0.06 | 0.04 | – |
| Calcium carbonate | 1.41 | 1.38 | 1.49 |
| Monocalcium phosphate | 1.42 | 1.02 | 0.82 |
| Vitamin–mineral premix2 | 0.35 | 0.35 | 0.35 |
| Formulated composition | |||
| ME (kcal/kg) | 3,095 | 3,161 | 3,220 |
| CP | 21.47 | 19.21 | 17.68 |
| Methionine | 0.56 | 0.50 | 0.39 |
| Lysine | 1.25 | 1.09 | 0.93 |
| Calcium | 0.96 | 0.85 | 0.84 |
| Phosphorus | 0.68 | 0.58 | 0.53 |
1
Diets were formulated to match Ross 708 specifications. Nutrient content of each of the different corn types (orange, yellow, white) was assumed to be equivalent for diet formulation.
2
Vitamin and mineral premix supplied the following per kilogram of diet: vitamin A, 5484 IU; vitamin D3, 2643 ICU; vitamin E,11 IU; menadione sodium bisulfite, 4.38 mg; riboflavin, 5.49 mg; d-pantothenic acid, 11 mg; niacin, 44.1 mg; choline chloride, 771 mg; vitamin B12, 13.2 μg; biotin, 55.2 μg; thiamine mononitrate, 2.2 mg; folic acid, 990 μg; pyridoxine hydrochloride, 3.3 mg; I, 1.11 mg; Mn, 66.06 mg; Cu, 4.44 mg; Fe, 44.1 mg; Zn, 44.1 mg; Se, 300 μg.