Table 1.
Composition of the basal diet.
| Ingredient, % | Value | Nutritional level2 | Value |
|---|---|---|---|
| Corn | 65.0 | ME, Kcal/kg | 2795 |
| DDGS | 10.0 | CP, % | 16.0 |
| Soybean protein concentrate | 13.6 | Lysine, % | 0.80 |
| Soybean oil | 0.91 | Methionine, % | 0.40 |
| L-Lysine HCl | 0.01 | Calcium, % | 3.00 |
| DL-Methionine | 0.26 | Non-phytate phosphorus, % | 0.41 |
| Tryptophan | 0.01 | Fe, mg/kg3 | 45.4 |
| Calcium carbonate (analytically pure) | 6.27 | Fe, mg/kg4 | 44.0 |
| Dicalcium phosphate (food-grade) | 1.75 | ||
| Salt (NaCl) | 0.25 | ||
| Maize cob meal | 0.94 | ||
| Premix1 | 1.00 |
Provided per kg of diet: vitamin A, 15,000 IU (retinyl acetate, Guangdong Newland Feed Science & Technology Co., Ltd., Guangzhou, China); vitamin D3, 3,600 IU (cholecalciferol); vitamin E, 47 IU (dl-α-tocopheryl acetate, Guangdong Newland Feed Science & Technology Co., Ltd., Guangzhou, China); vitamin K, 6 mg; thiamine, 3 mg; riboflavin, 9 mg; niacin, 60 mg; pantothenic acid, 16 mg; vitamin B6, 6mg; folic acid, 1.5 mg; cobalamin, 0.03 mg; biotin, 0.06 mg; 50% choline chloride, 900 mg; CuSO4•5H2O, 28 mg; ZnSO4•H2O, 210 mg; MnSO4•H2O, 280 mg; NaSeO3, 0.60 mg; Ca(IO3)2•H2O, 1.46 mg; ethoxyquin, 150 mg; calcium propanoate, 1.00 g; maize cob meal (carrier), 4.61 g.
Values were calculated based on the data provided by Feeding Standard of Chicken (Ministry of Agriculture, China, 2004).
Calculated Fe content based on Fe analyses in Corn, DDGS, soybean protein concentrate, calcium carbonate, dicalcium phosphate and corn gluten meal.
Iron was analyzed by atomic absorption spectrophotometry.