Table 1.
Composition and nutrient levels of experimental diets.
| Ingredients | % | Nutrient level | Contents |
|---|---|---|---|
| Corn | 28.31 | Digestible energy (calculated, MJ/kg) | 14.78 |
| Extruded corn | 24.87 | Crude protein(%) | 19.68 |
| Soybean meal | 8.50 | Calcium(%) | 0.81 |
| Extruded full-fat soybean | 10.30 | Available phosphorus (%) | 0.55 |
| Fish meal | 4.20 | Lysine | 1.35 |
| Whey powder | 7.00 | Methionine | 0.42 |
| Soybean protein concentrate | 8.00 | Methionine+cysteine | 0.60 |
| Soybean oil | 2.00 | Threonine | 0.79 |
| Sucrose | 4.00 | Tryptophan | 0.22 |
| Limestone | 0.90 | ||
| Dicalcium phosphate | 0.50 | ||
| NaCl | 0.30 | ||
| L-Lysine$HCl (78%) | 0.47 | ||
| DL-Methionine | 0.15 | ||
| L-Threonine (98.5%) | 0.13 | ||
| Tryptophan (98%) | 0.03 | ||
| Chloride choline | 0.10 | ||
| Vitamin premixa | 0.04 | ||
| Mineral premixb | 0.20 | ||
| Total | 100 |
aThe vitamin premix provided the following per kg of diet: 9000 IU of VA, 3000 IU of VD 3, 20 IU of VE, 3 mg of VK 3, 1.50 mg of VB1, 4 mg of VB 2, 3 mg of VB6, 0.02 mg of VB12, 30 mg of niacin, 15 mg of pantothenic acid, 0.75 mg of folic acid, and 0.10 mg of biotin. The premix provided the following per kg of diets: 75 mg of Fe, 150 mg of Cu, 75 mg of Zn, 60 mg of Mn, and 0.35 mg of I.