Table 1.
Composition and nutrient levels of basal diets (%, as-fed basis).
| Ingredients | D 1-21 | D 22-42 | D 43-48 |
|---|---|---|---|
| Corn | 59.03 | 63.14 | 69.66 |
| Soybean meal, 43% | 29.40 | 24.40 | 18.50 |
| Corn gluten meal | 3.00 | 5.00 | 5.00 |
| Fish meal | 2.00 | - | - |
| Soybean oil | 2.10 | 3.00 | 2.70 |
| Limestone | 1.30 | 1.28 | 1.21 |
| Calcium phosphate | 1.45 | 1.50 | 1.25 |
| Salt | 0.35 | 0.35 | 0.35 |
| Choline chloride, 50% | 0.10 | 0.10 | 0.10 |
| L-Lysine hydrochloride, 98.5% | 0.09 | 0.16 | 0.17 |
| DL-Methionine | 0.17 | 0.07 | 0.02 |
| L-Threonine, 98.5% | 0.01 | - | 0.04 |
| Vitamin-mineral premix1 | 1.00 | 1.00 | 1.00 |
| Total | 100 | 100 | 100 |
| Nutrient content2 | |||
| Metabolizable energy, Kcal/kg | 3,000.00 | 3,100.00 | 3,150.00 |
| Crude protein, % | 21.00 | 19.00 | 17.00 |
| Salt, % | 0.46 | 0.40 | 0.39 |
| Sodium, % | 0.18 | 0.15 | 0.15 |
| Chlorine, % | 0.28 | 0.26 | 0.26 |
| Calcium, % | 1.00 | 0.90 | 0.80 |
| Total phosphorus, % | 0.67 | 0.61 | 0.55 |
| Available phosphorus, % | 0.45 | 0.40 | 0.35 |
| Lysine, % | 1.15 | 1.00 | 0.87 |
| Total methionine, % | 0.54 | 0.42 | 0.34 |
| Threonine, % | 0.81 | 0.72 | 0.68 |
1
Provided per kilogram of diet: Vitamin A, 15,000 IU; Vitamin D3, 3,900 IU; Vitamin E, 30 IU; Vitamin K, 33 mg; Vitamin B1 (thiamin), 12.4 mg; Vitamin B2 (riboflavin), 28 mg; Vitamin B6 (pyridoxine HCl) 20.02 mg, Vitamin B12 (cobalamin) 0.010 mg, pantothenic acid, 25 mg, Nicotinic acid, 45 mg, folic acid, 1.2 mg, biotin, 0.18 mg, choline, 700 mg, copper, 8 mg; iron, 80 mg; zinc, 80 mg; manganese, 100 mg; selenium, 0.15 mg; iodine, 0.35 mg.
2
The nutrient levels were calculated values.