Table 1.
Composition and nutrient levels of the basal diet.
| Ages (d) |
||
|---|---|---|
| Items | 1–21 | 22–42 |
| Ingredients (air-dry basis,%) | ||
| Corn | 56.33 | 57.4 |
| Soybean meal | 24.5 | 19 |
| Extruded soybean | 5 | 4 |
| Corn distillers dried grains with solubles | 5 | 8 |
| Corn gluten meal | 2 | 3 |
| Soybean oil | 1.2 | 4.3 |
| Limestone | 1.3 | 1.3 |
| Fermented soybean meal | 1.67 | 0 |
| Premix1,2 | 3 | 3 |
| Total | 100.00 | 100.00 |
| Nutrient levels | ||
| Metabolizable energy (kcal/kg) | 2949 | 3148 |
| Crude protein (%) | 20.6 | 18.6 |
| Crude fat | 4.9 | 8.0 |
| Lysine (%) | 1.17 | 0.99 |
| Methionine + Cysteine (%) | 1.45 | 1.23 |
| Threonine + Tryptophan (%) | 1.13 | 0.95 |
| Calcium (%) | 0.88 | 0.79 |
| Total phosphorus (%) | 0.64 | 0.56 |
1
Minimal vitamin levels per kg of diets: vitamin A (retinyl acetate), 1,500 IU; cholecalciferol, 200 IU; vitamin E (DL-α-tocopheryl acetate), 10 IU; riboflavin, 3.5 mg; pantothenic acid, 10 mg; niacin, 30 mg; cobalamin, 10μg; choline chloride, 1,000 mg; biotin, 0.15 mg; folic acid, 0.5 mg; thiamine 1.5 mg; pyridoxine 3.0 mg.
2
Minimal mineral levels per kg of diet: Fe 80.00 mg;Cu 8.00 mg; Mn 60.00 mg; Zn 40.00 mg; I 0.18mg; Se 0.15 mg.