Table 1.
Dietary composition and nutrient levels of the basal diets.
| Ingredient | Starter diet (%, from day 1 to day 21) | Grower diet (%, from day 22 to day 42) |
|---|---|---|
| Corn | 57.76 | 60.77 |
| Soybean meal | 35.5 | 31.9 |
| Calcium hydrogen phosphate | 1.8 | 1.7 |
| Limestone | 1.3 | 1.1 |
| Salt | 0.3 | 0.3 |
| DL-methionine | 0.21 | 0.1 |
| Poultry vit mix1 | 0.3 | 0.3 |
| Poultry mineral mix2 | 0.03 | 0.03 |
| Choline chloride | 0.1 | 0.1 |
| Corn oil | 2.7 | 3.7 |
| Total | 100.00 | 100.00 |
| Nutrient level | ||
| Crude protein % | 21.51 | 20.00 |
| Metabolizable energy MJ/kg | 3.00 | 3.10 |
| Calcium % | 1.00 | 0.90 |
| Total phosphorus % | 0.68 | 0.65 |
| Nonphytate phosphorus % | 0.44 | 0.42 |
| Methionine % | 0.54 | 0.41 |
| Cystine % | 0.90 | 0.76 |
| Lysine % | 1.16 | 1.06 |
| Tryptophan % | 0.26 | 0.24 |
| Threonine % | 0.80 | 0.75 |
| Arginine % | 1.39 | 1.29 |
| Histidine % | 0.54 | 0.50 |
| Isoleucine % | 0.86 | 0.79 |
| Leucine % | 1.75 | 1.65 |
| Phenylalanine % | 1.03 | 0.96 |
| Phenylalanine tyrosine % | 1.75 | 1.64 |
| Valine % | 0.99 | 0.92 |
| Glycyl-DL-serine % | 1.80 | 1.68 |
| Na % | 0.14 | 0.14 |
| Chlorine % | 0.22 | 0.22 |
1
Vitamin mix provided the following (per kg of diet): vitamin A, 10,000 IU; vitamin D3, 2,000 IU; vitamin E, 20 mg; vitamin K3, 3 mg; vitamin B2, 2.5 mg; vitamin B6, 0.4 mg; vitamin B12, 0.015 mg; vitamin B5, 8 mg; nicotinic acid, 25 mg; folic acid, 1.2 mg; choline chloride 450 mg.
2
Trace mineral mix provided the following (per kg of diet): copper (CuSO4·5H2O), 15 mg; iron (FeSO4·7H2O), 20 mg; zinc (ZnO), 80 mg; manganese (MnSO4·H2O), 80 mg; iodine (from calciumiodate), 1.5 mg; Se (from sodium selenite), 0.3 mg.