Table 1.
Composition and nutrient level of the experimental diets.
| RB type | HRBa | FHRBb | ||
|---|---|---|---|---|
| RB level | 2.5% | 5.0% | 2.5% | 5.0% |
| Ingredient (%) | ||||
| Corn | 58.40 | 56.80 | 58.40 | 56.80 |
| Soybean meal | 25.20 | 24.40 | 25.20 | 24.40 |
| Limestone | 8.00 | 8.00 | 8.00 | 8.00 |
| Soybean oil | 0.40 | 0.30 | 0.40 | 0.30 |
| HRB | 2.50 | 5.00 | — | — |
| FHRB | — | — | 2.50 | 5.00 |
| Premixc | 5.00 | 5.00 | 5.00 | 5.00 |
| TiO2 | 0.50 | 0.50 | 0.50 | 0.50 |
| Nutrient level | ||||
| Total energy (MJ/kg) | 13.02 | 13.15 | 12.71 | 13.02 |
| Metabolic energy (MJ/kg) | 12.42 | 12.42 | 12.42 | 12.42 |
| Crude protein (%) | 20.42 | 20.20 | 20.01 | 20.22 |
| Ether extract (%) | 2.97 | 3.14 | 2.97 | 3.14 |
| Crude fiber (%) | 3.20 | 3.82 | 3.34 | 3.43 |
| Ash (%) | 17.20 | 17.39 | 17.52 | 17.75 |
| Calcium (%) | 4.67 | 4.79 | 4.97 | 5.00 |
| Phosphorus (%) | 0.70 | 0.74 | 0.76 | 0.80 |
a
HRB, heat-treated rice bran.
b
FHRB, fermented heat-treated rice bran.
c
The premix provided the following per kilogram of diets: VA 10,000 IU, VD3 3,000 IU, VE 25 mg, VK3 2.5 mg, VB2 6 mg, VB6 3 mg, VB12 0.01 mg, biotin 0.1 mg, pantothenic acid 10 mg, folic acid 0.3 mg, nicotinamide 40 mg, Cu (as copper sulfate) 15 mg, Fe (as ferrous sulfate) 90 mg, Mn (as manganese sulfate) 110 mg, Zn (as zinc sulfate) 90 mg, I (as potassium iodide) 90 mg, and Se (as selenium yeast) 0.3 mg.