Table 1.
Composition and nutrient levels of experiment substrates.
| Item | Experiment Substrates |
|
|---|---|---|
| CON | TRT | |
| Ingredient, % of DM | ||
| Alfalfa hay | 18.59 | 5.51 |
| Corn silage | 25.65 | 22.06 |
| Steam-flaked corn | 26.02 | 26.47 |
| Soybean meal | 7.43 | 7.35 |
| Cottonseed meal | 7.43 | 7.35 |
| Beet pulp | 5.58 | 5.51 |
| DDGS | 7.43 | 7.35 |
| Wheat bran | – | 8.27 |
| Soybean hull | – | 8.27 |
| Premix1 | 1.86 | 1.84 |
| Chemical composition, % of DM | ||
| CP | 16.4 | 16.4 |
| RDP (% of CP) | 56.3 | 56.7 |
| NDF | 34.2 | 34.5 |
| f NDF | 24.0 | 15.8 |
| ADF | 23.0 | 23.2 |
| NFC2 | 39.3 | 35.6 |
| Starch | 24.9 | 24.8 |
| NEL3, Mcal/kg | 1.53 | 1.60 |
1Premix composition per kilogram: 1,230 mg of Cu [minimum (min)], 4,950 mg of Zn (min), 1,760 mg of Mn (min), 50 mg of I (min), 61 mg of Se (min), 37 mg of Co (min), 504,800 IU of vitamin A (min), 88,800 IU of vitamin D3 (min), and 2,100 IU of vitamin E (min), 700 mg of vitamin B3 (min).
2Calculated as 100 − (% NDF + % CP + % ether extract + % ash).
3Estimated according to National Research Council [NRC] (2001).