Table 1.
Ingredient composition and nutrient content of basal diet (%, DM)
| Ingredient | % | Nutrient and energyc | |
|---|---|---|---|
| Corn | 66.45 | CP | 15.52% |
| Soybean meal | 22.80 | AME | 2,700, kcal/kg |
| Limestone | 8.20 | VK3 | 0 mg/kg |
| Dicalcium phosphate | 1.70 | Lys | 0.75% |
| Sodium chloride | 0.30 | Met | 0.37% |
| DL-Met | 0.12 | Met + Cys | 0.64% |
| Choline chloride | 0.10 | Thr | 0.57% |
| Vitamin premixa | 0.30 | Ca | 3.60% |
| Mineral premixb | 0.03 | Total P | 0.65% |
| Total | 100 | Available P | 0.39% |
aVitamin premix supplied (per kg of diet): vitamin A, 6,000 IU; vitamin D3, 1,500 IU; vitamin E, 15 IU; vitamin B1, 3 mg; vitamin B2, 10.2 mg; folic acid, 0.9 mg; calcium pantothenate, 15 mg; niacin, 45 mg; vitamin B6, 5.4 mg; vitamin B12, 24 μg; biotin, 150 μg
bMineral premix provided (per kg of diet): Cu (CuSO4·5H2O), 6.8 mg; Fe (FeSO4·7H2O), 66 mg; Zn (ZnSO4·7H2O), 83 mg; Mn (MnSO4·H2O), 80 mg; I (KI), 1 mg; Se (Na2SeO3), 0.3 mg
cContents of VK, CP and Ca were analyzed. Contents of other nutrients and energy content were calculated based on Feeding Standard of Chickens (Ministry of Agriculture of People’s Republic of China, 2004)