Table 1.
Composition and nutrient levels of basal diets (air-dry basis).
| Items | 43–70 d of age | 71–105 d of age |
|---|---|---|
| Ingredients | ||
| Corn | 53.52 | 56.16 |
| Soybean meal | 28.92 | 24.59 |
| Wheat middling3 | 10.00 | 12.00 |
| Soybean oil | 3.54 | 3.65 |
| CaHPO4 | 1.69 | 1.44 |
| Mountain flour | 1.14 | 1.04 |
| Premix1 | 1.00 | 1.00 |
| Lys | 0.15 | 0.00 |
| Met | 0.04 | 0.12 |
| Total | 100.00 | 100.00 |
| Nutrient levels2 | ||
| ME (MJ/kg) | 12.60 | 12.81 |
| CP | 18.53 | 17.05 |
| Lys | 0.98 | 0.85 |
| Met | 0.42 | 0.37 |
| Cys | 0.72 | 0.65 |
| Ca | 0.93 | 0.82 |
| TP | 0.65 | 0.61 |
The premix provided the following amounts per kg of the diets: VA 12,500 IU, VD 2,500 IU, VE 25 mg, VK3 3 mg, VBl 3 mg, VB2 8 mg, VB6 7 mg, VBl2 0.03 mg, D-pantothenic acid 20 mg, niacin 50 mg, biotin 0.1 mg, folic acid 1.5 mg, Cu (as copper sulfate) 8 mg, Fe (as ferrous sulfate) 100 mg, Mn (as manganese sulfate) 100 mg, Zn (as zinc sulfate) 100 mg, I (as potassium iodide) 0.6 mg, Se (as sodium selenite) 0.16 mg.
ME was a calculated value, while the other nutrient levels were measured values.
Each treatment group added 0 g, 200 g, 400 g, 600 g, and 800 g of TCP, respectively, per 100 kg of daily feed to replace wheat middling. The nutritional composition of each group was determined to be consistent.