Table 1.
Composition and nutrient levels of the basal diets for 1- to 39-d-old broilers (as-fed basis).
| D 1–21 |
D 22–39 | ||
|---|---|---|---|
| Item | Semi-purified diet (d 1–13) | Corn-soybean meal diet (d 14–21) | Corn-soybean meal diet |
| Ingredients (%) | |||
| Corn | 53.82 | 59.16 | |
| Soybean meal | 37.42 | 32.31 | |
| Corn starch | 65.70 | ||
| Casein | 25.75 | ||
| Cellulose | 3.40 | ||
| Soybean oil | 4.70 | 5.00 | |
| DL-Met | 0.20 | 0.30 | 0.20 |
| CaHPO4⋅2H2O1 | 1.60 | 1.87 | 1.65 |
| CaCO31 | 1.60 | 1.14 | 1.05 |
| NaCl1 | 0.30 | 0.30 | 0.30 |
| Micronutrients2 | 1.45(containing macrominerals) | 0.25 | 0.18 |
| Cornstarch + Zn3 | 0.20 | 0.15 | |
| Total | 100.00 | 100.00 | 100.00 |
| Nutrient levels composition | |||
| ME, Kcal/kg | 3140 | 3021 | 3096 |
| CP4, % | 22.72 | 21.74 | 19.61 |
| Lys, % | 1.80 | 1.12 | 1.00 |
| Met, % | 0.86 | 0.59 | 0.48 |
| Met+cys, % | 0.96 | 0.90 | 0.76 |
| Ca4, % | 0.99 | 1.02 | 0.89 |
| Nonphytate P, % | 0.48 | 0.45 | 0.40 |
| Zn4, mg/kg | 17.69 | 25.72 | 25.64 |
Reagent grade.
Provided per kilogram of diet: for d 1-13 – vitamin A (all-trans retinol acetate), 12000 IU; vitamin D3 (cholecalciferol), 4500 IU; vitamin E (all-rac-α-tocopherol acetate), 33 IU; vitamin K3, 3 mg; vitamin B1, 3 mg; vitamin B2, 9.6 mg; vitamin B6, 4.5 mg; vitamin B12, 0.03 mg; pantothenic acid calcium, 15 mg; niacin, 54 mg; folic acid, 1.5 mg; biotin, 0.15 mg; choline, 700 mg; K (KCl), 3000 mg; Mg (MgSO4.7H2O), 600 mg; Cu (CuSO4⋅5H2O), 8 mg; Mn (MnSO4⋅H2O), 110 mg; Fe (FeSO4⋅7H2O), 40 mg; I (Ca(IO3)2·H2O), 0.35 mg; Se(Na2SeO3), 0.15mg; for d 14-21 – vitamin A (all-trans retinol acetate), 12000 IU; vitamin D3 (cholecalciferol), 4500 IU; vitamin E (all-rac-α-tocopherol acetate), 33 IU;vitamin K3, 3 mg; vitamin B1, 3 mg; vitamin B2, 9.6 mg; vitamin B6, 4.5 mg; vitamin B12, 0.03 mg; Pantothenic acid calcium, 15 mg;Niacin, 54 mg; Folic acid, 1.5 mg; Biotin, 0.15 mg; Choline, 700 mg; Cu (CuSO4⋅5H2O), 8 mg; Mn (MnSO4⋅H2O), 110 mg; Fe (FeSO4⋅7H2O), 40 mg; I (Ca(IO3)2·H2O), 0.35mg; Se (Na2SeO3), 0.15 mg; for d 22-39 – vitamin A (all-trans retinol acetate), 8000 IU; vitamin D3 (cholecalciferol), 3000 IU; vitamin E (all-rac-α-tocopherol acetate), 22 IU; vitamin K3, 2 mg; vitamin B1, 2 mg; vitamin B2, 6.4 mg; vitamin B6, 3 mg; vitamin B12, 0.02 mg; pantothenic acid calcium, 10 mg; niacin, 36 mg; folic acid, 1 mg; biotin, 0.1 mg; choline, 500 mg; Cu (CuSO4⋅5H2O), 8 mg; Mn (MnSO4⋅H2O), 80 mg; Fe (FeSO4⋅7H2O), 30 mg; I (Ca(IO3)2·H2O), 0.35 mg; Se(Na2SeO3), 0.15 mg.
Zn supplements added in place of equivalent weights of cornstarch.
Determined values.