Table 1.
Composition and nutrient level of the basal diet.
| Items | Days 1–21 | Days 22–42 |
|---|---|---|
| Ingredient (%) | ||
| Corn | 55.60 | 55.20 |
| Soybean meal (CP, 44%) | 29.00 | 24.00 |
| Cottonseed meal | 2.50 | 3.00 |
| Wheat flour | 4.00 | 4.00 |
| Hydrolyzed feather meal | 1.50 | 1.50 |
| Dicalcium phosphate (16.5%) | 0.90 | 0.80 |
| Limestone powder | 1.50 | 1.50 |
| Bentonite | 1.00 | 1.00 |
| Soy oil | 2.00 | 7.00 |
| Premixa | 2.00 | 2.00 |
| Total | 100.00 | 100.00 |
| Calculation of nutrientsb | ||
| Metabolizable energy, kcal/kg | 2,894 | 3,212 |
| Crude protein, % | 21.50 | 19.51 |
| Calcium, % | 0.96 | 0.84 |
| Total phosphorus, % | 0.66 | 0.55 |
| Lysine, % | 1.45 | 1.40 |
| Methionine, % | 0.54 | 0.50 |
| Threonine, % | 0.91 | 0.80 |
a
Supplied per kilogram of diet: vitamin A, 11,500 IU; cholecalciferol, 3,500 IU; vitamin E, 30 mg; vitamin K3, 5 mg; thiamin, 3.38 mg; riboflavin, 9.0 mg; pyridoxine, 4.5 mg; vitamin B12, 0.025 mg; choline chloride, 800 mg; calcium pantothenate, 13 mg; niacin, 45 mg; biotin, 0.15 mg; folic acid, 1.20 mg; Mn (from manganese sulfate), 60 mg; Fe (from ferrous sulfate), 66.5 mg; Zn (from zinc sulfate), 88 mg; Cu (from copper sulfate), 8.8 mg; I (from calcium iodate), 0.70 mg; Se (from sodium selenite), 0.3 mg.
b
The nutrient levels were as fed basis.