Table 1.
Ingredients composition and nutrient levels of basal diets for Exp. 1 (as-fed basis)
| Items | Phases | |
|---|---|---|
| 1–21 d | 22–35 d | |
| Ingredients, % | ||
| Corn | 37.55 | 48.09 |
| Extruded corn | 18.00 | 15.00 |
| Soybean meal | 13.00 | 18.50 |
| Extruded soybean | 10.00 | 6.00 |
| Fish meal | 4.00 | 3.00 |
| Spray-dried plasma protein | 3.00 | 0.00 |
| Whey powder | 10.00 | 5.00 |
| Soy oil | 1.03 | 1.08 |
| Monocalcium phosphate | 0.78 | 0.66 |
| Limestone | 0.95 | 0.90 |
| Salt | 0.30 | 0.30 |
| L-Lysine HCl | 0.32 | 0.39 |
| DL-Methionine | 0.16 | 0.20 |
| L-Threonine | 0.11 | 0.16 |
| L-Tryptophan | 0.00 | 0.02 |
| Corn starch | 0.30 | 0.20 |
| Vitamin-mineral premix1 | 0.50 | 0.00 |
| Vitamin-mineral premix2 | 0.00 | 0.50 |
| Total | 100.00 | 100.00 |
| Nutrient composition3 | ||
| Digestible energy, Mcal/kg | 3.54 | 3.49 |
| Crude protein, % | 20.56 | 18.88 |
| Ca, % | 0.80 | 0.70 |
| Digestible P, % | 0.40 | 0.34 |
| Lysine, % | 1.35 | 1.24 |
| Methionine, % | 0.39 | 0.36 |
| Threonine, % | 0.79 | 0.73 |
| Tryptophan, % | 0.23 | 0.20 |
1The premix provided for per kg of feed: Zn, 100 mg; Mn, 4 mg; Fe, 100 mg; Cu, 6 mg; I, 0.14 mg; Se, 0.3 mg; choline chloride, 500 mg; vitamin A, 10,500 IU; vitamin D3, 3,300 IU; vitamin E, 22.5 IU; vitamin K3, 3 mg; vitamin B1, 3 mg; vitamin B2, 7.5 mg; vitamin B6, 4.5 mg; vitamin B12, 0.03 mg; niacin, 30 mg; pantothenate, 15 mg; folic acid, 1.5 mg; biotin, 0.12 mg.
2The premix provided for per kg of feed: Zn, 80 mg; Mn, 3 mg; Fe, 100 mg; Cu, 5 mg; I, 0.14 mg; Se, 0.25 mg; choline chloride, 400 mg; vitamin A, 10,500 IU; vitamin D3, 3,300 IU; vitamin E, 22.5 IU; vitamin K3, 3 mg; vitamin B1, 3 mg; vitamin B2, 7.5 mg; vitamin B6, 4.5 mg; vitamin B12, 0.03 mg; niacin, 30 mg; pantothenate, 15 mg; folic acid, 1.5 mg; biotin, 0.12 mg.
3All data were calculated according to the tables of Feed Composition and Nutrient Values in China (2016) in two diets.