Table 1.
Composition of basal diet and nutrient levels (as-fed basis).
| Item | (1–21 d) | (21–42 d) |
|---|---|---|
| Ingredients (%) | ||
| Corn | 55.97 | 61.37 |
| Soybean meal | 37.63 | 31.88 |
| Soybean oil | 2.37 | 3.13 |
| Limestone | 1.27 | 1.21 |
| NaCl | 0.35 | 0.35 |
| CaHPO4 | 1.75 | 1.49 |
| DL-Methionine | 0.2 | 0.12 |
| HCl L-Lys·HCl | 0.02 | 0.01 |
| Antioxygen | 0.02 | 0.02 |
| Vitamin premix 1 | 0.02 | 0.02 |
| Choline chloride 1 | 0.2 | 0.2 |
| Trace mineral premix 2 | 0.2 | 0.2 |
| Total | 100 | 100 |
| Analyzed nutritional value (%) 3 | ||
| Metabolic energy/(MJ/kg) | 11.76 | 12.22 |
| Crude protein | 21.36 | 19.87 |
| Crude fat | 4.83 | 5.02 |
| Crude fiber | 3.46 | 3.09 |
| Ca | 1.01 | 0.91 |
| Total phosphorus | 0.60 | 0.54 |
| Lys | 1.14 | 1.02 |
| Met | 0.50 | 0.41 |
1 The vitamin premix provided the following per kg of feed: vitamin A, 9500 IU; vitamin D3, 2500 IU; vitamin K3, 2.65 mg; vitamin B12, 25 μg; vitamin B2, 6 mg; vitamin E, 30 IU; biotin, 0.0325 mg; folic acid, 1.25 mg; pantothenic acid, 12 mg; nicotinic acid, 50 mg; 2 The mineral premix provided the following per kg of feed: Cu, 8 mg; Zn, 75 mg; Fe, 80 mg; Mn, 100 mg; Se, 0.15 mg; and I, 0.35 mg; 3—Values are the means of a chemical analysis conducted in duplicate.