Table 3.
Composition and nutrient content of the experimental diets (as-fed basis).
| Inclusion levels of DON-contaminated DDGS1, % |
|||||
|---|---|---|---|---|---|
| Items | 0 | 5 | 10 | 15 | 20 |
| Ingredient, % | |||||
| Corn | 45.72 | 44.14 | 42.54 | 41.15 | 39.48 |
| Wheat | 6.20 | 5.88 | 5.56 | 5.00 | 4.79 |
| Soybean meal, 46% CP | 37.69 | 35.05 | 32.38 | 29.75 | 27.08 |
| DDGS1 | 0.00 | 5.00 | 10.00 | 15.00 | 20.00 |
| Soybean oil | 5.76 | 5.25 | 4.75 | 4.25 | 3.74 |
| Monodicalcium phosphate | 1.54 | 1.46 | 1.37 | 1.29 | 1.20 |
| Limestone | 1.26 | 1.31 | 1.38 | 1.44 | 1.49 |
| Lysine sulfate | 0.26 | 0.34 | 0.42 | 0.50 | 0.58 |
| Threonine | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 |
| DL-Methionine | 0.35 | 0.34 | 0.33 | 0.32 | 0.31 |
| L-Tryptophan | 0.00 | 0.01 | 0.05 | 0.08 | 0.11 |
| NaCl | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 |
| Choline | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Coccidiostats | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Sodium bicarbonate | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 |
| Vitamin premix2 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Mineral premix3 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| Calculated energy and nutrient content4 | |||||
| AMEn5, kcal/kg | 3,100 | 3,100 | 3,100 | 3,100 | 3,100 |
| CP, % | 21.75 | 21.75 | 21.75 | 21.75 | 21.75 |
| Total lysine, % | 1.32 | 1.32 | 1.32 | 1.32 | 1.32 |
| Total methionine + cysteine, % | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Total threonine, % | 0.94 | 0.94 | 0.93 | 0.93 | 0.93 |
| Total tryptophan, % | 0.27 | 0.27 | 0.27 | 0.27 | 0.27 |
| Digestible lysine, % | 1.24 | 1.25 | 1.27 | 1.29 | 1.30 |
| Digestible methionine + cysteine, % | 0.91 | 0.91 | 0.91 | 0.91 | 0.91 |
| Digestible threonine, % | 0.83 | 0.82 | 0.81 | 0.80 | 0.79 |
| Digestible tryptophan, % | 0.24 | 0.23 | 0.23 | 0.23 | 0.22 |
| Total calcium, % | 0.87 | 0.87 | 0.87 | 0.87 | 0.87 |
| Available phosphorus, % | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 |
DON, deoxynivalenol; DDGS, corn distillers dried grains with solubles.
Provided per kilogram of the complete diet: vitamin A (from vitamin A acetate), 13,000 IU; vitamin D3, 5,000 IU; vitamin E (from DL-α-tocopheryl acetate), 80 IU; vitamin K3, 4 mg; vitamin B1, 4 mg; vitamin B2, 10 mg; vitamin B6, 6 mg; vitamin B12, 20 µg; calcium pantothenate, 20 mg; folic acid, 2 mg; biotin, 200 µg; niacin, 60 mg.
Provided per kilogram of the complete diet: Zn (as ZnO), 100 mg; Mn (as MnSO2·H2O), 120 mg; Fe (as FeSO4·7H2O), 60 mg; Cu (as CuSO4·5H2O), 16 mg; Co (as CoCO3), 1,000 µg; I (as Ca(IO3)2·H2O), 1.25 mg; Se (as Na2SeO3), 300 µg.
Calculated values from the Ross 308 broiler nutrition specifications (Aviagen, 2014).
Assumed AMEn value for DDGS (3,282 kcal/kg) was calculated from the prediction equation of corn co-products in broiler chickens (Rochell et al., 2011).