Table 1.
Composition and nutrient levels of the experimental diets (%, as-fed basis).
| Ingredients | EFS 1 | ESBM 1 |
|---|---|---|
| Corn | 32.48 | 41.23 |
| Wheat | 20.00 | 20.00 |
| Enzyme-treated soybean meal | 0.00 | 14.00 |
| Extruded full-fat soybean | 24.00 | 0.00 |
| Whey powder | 12.00 | 12.00 |
| Fish meal | 5.00 | 5.00 |
| Soy oil | 3.01 | 4.24 |
| Dicalcium phosphate | 1.05 | 0.82 |
| Limestone | 0.48 | 0.74 |
| Salt | 0.30 | 0.30 |
| L-Lysine | 0.52 | 0.58 |
| Methionine | 0.09 | 0.10 |
| Threonine | 0.18 | 0.17 |
| Tryptophan | 0.04 | 0.04 |
| Valine | 0.15 | 0.08 |
| Zinc oxide | 0.20 | 0.20 |
| Vitamin-mineral premix 2 | 0.50 | 0.50 |
| Analyzed nutrient levels | ||
| Gross energy, MJ/kg | 17.16 | 17.15 |
| Crude protein | 18.54 | 18.52 |
| Ether extract | 6.00 | 4.30 |
| Neutral detergent fiber | 15.50 | 15.00 |
| Acid detergent fiber | 2.10 | 3.00 |
| Dry matter | 90.00 | 90.50 |
| Ash | 6.40 | 5.40 |
Note: 1 EFS: Extruded full-fat soybean; ESBM: Enzyme-treated SBM. The anti-nutrient factors in EFS included 10.2 mg/g glycinin, 7.6 mg/g β-conglycinin and 0.9 TIU/mg trypsin inhibitor, while the anti-nutrient factors in ESBM included 0.30 mg/g glycinin, 0.15 mg/g β-conglycinin and 0.75 TIU/mg trypsin inhibitor. The EFS included 35.5% crude protein, 2.2% lysine, 0.54% methionine, 1.35% threonine, 0.45% tryptophan and 1.69% valine, while the ESBM included 53.04% crude protein, 3.25% lysine, 0.79% methionine, 2.32% threonine, 0.73% tryptophan and 2.54% valine. 2 Vitamin-mineral premix for each kg diet: vitamin A, 12,000 IU; vitamin E, 30 IU; vitamin D3, 2500 IU; vitamin K3, 30 mg; vitamin B12, 12 μg; riboflavin, 4 mg; pantothenic acid, 15 mg; nicotinic acid, 40 mg; choline chloride, 400 mg; folic acid, 0.7 mg; vitamin B1, 1.5 mg; vitamin B6, 3 mg; biotin, 0.1 mg; manganese, 40 mg; iron, 90 mg; zinc, 100 mg; copper, 8.8 mg; iodine, 0.35 mg; selenium, 0.3 mg.