Table 1.
Diet formulation and calculated nutrient composition for rearing period (0–17 wk).1
| Ingredients, % (unit %) | Starter 1,2 1–3 wk | Starter 2, 4–6 wk | Grower, 49–60 wk | Developer | Prelay |
|---|---|---|---|---|---|
| Corn | 67.11 | 62.19 | 65.93 | 69.43 | 62.17 |
| Soybean meal | 28.08 | 27.34 | 24.00 | 20.00 | 23.10 |
| Soybean oil | 1.00 | 3.00 | 2.54 | 2.57 | 3.02 |
| Limestone | 0.68 | 0.71 | 0.8 | 1.95 | 4.68 |
| Defluorinated phosphate | 2.03 | 2.01 | 1.92 | 1.85 | 2.01 |
| NaCl | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 |
| L-Lysine HCl | 0.19 | 0.13 | 0.11 | 0.08 | 0.01 |
| DL-Methionine | 0.21 | 0.23 | 0.18 | 0.14 | 0.20 |
| Threonine | 0.23 | 0.08 | 0.06 | 0.05 | 0.03 |
| Vitamin premix3 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Mineral premix4 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 |
| Amprolium | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Sand | 0 | 3.85 | 3.99 | 3.47 | 4.33 |
| Calculated value5 | |||||
| ME (kcal/kg) | 3,030 | 3,030 | 3,030 | 3,050 | 2,920 |
| CP% | 20.00 | 18.25 | 17.50 | 16.00 | 16.50 |
| Ca% | 1.00 | 1.00 | 1.00 | 1.40 | 2.50 |
| Available P (%) | 0.50 | 0.49 | 0.47 | 0.45 | 0.48 |
Abbreviations: 5 ME, metabolic enenrgy; CP%, crude protein percentage; Ca, calcium percentage; Available P, available phosphorus percentage.
Treatments were added as the form of vitamin premix in the diet: D treatment, vitamin D3 at 2,760 IU/kg; DD treatment, vitamin D3 at 5,220 IU/kg; 25D treatment, vitamin D3 at 2,760 IU/kg plus 25OHD at 2,760 IU (69 μg)/kg.
Starter 1 (0–3 wk), starter 2 (4–6 wk), grower (7–12 wk), developer (13–15 wk), prelay (15–17 wk).
Supplied per kilogram of diet: vitamin A, 9,900 IU; vitamin E, 22.10 IU; vitamin B12, 0.02 mg; biotin, 0.06 mg; menadione, 3.3 mg; thiamine, 2.20 mg; riboflavin, 6.60 mg; pantothenic acid, 11.00 mg; vitamin B6, 4.40 mg; niacin, 33.00 mg; folic acid, 0.90 mg; choline, 191.36 mg.
Supplied per kilogram of diet: Mn, 80.4 mg; Zn, 64.2 mg; Mg, 16.08 mg; Fe, 15.78; Cu, 2.4 mg; I, 0.6 mg; Se, 0.24 mg.