Table 1.
Ingredient inclusion rate and composition (mean ± SD) of basal diet
| Item | Basal diet1 |
|---|---|
| Ingredients, % DM2 | |
| Steam-flaked corn grain | 72.6 |
| Dry distillers grains with solubles | 18.0 |
| Barley silage | 7.5 |
| Micro-ingredients3 | 1.9 |
| Composition, % DM | |
| DM, % as-fed | 73.2 ± 0.88 |
| OM | 94.6 ± 0.29 |
| CP | 14.7 ± 1.17 |
| Starch | 49.7 ± 2.06 |
| NDF | 16.9 ± 1.00 |
| ADF | 5.3 ± 0.31 |
| Crude fat | 4.3 ± 0.20 |
1Combined analysis of control diet and diets containing 100, 125, and 150 mg 3-NOP/kg DM.
2On a DM basis, steam-flaked corn grain contained: 10.1 ± 0.84% NDF, 2.6 ± 0.47% ADF, 8.2 ± 0.33% CP, and 75.0 ± 7.72% starch; dry distillers grains contained: 35.5 ± 0.75% NDF, 10.2 ± 0.01% ADF, 34.1 ± 1.07% CP, and 3.4 ± 0.20% starch; and barley silage contained: 48.6 ± 0.32% NDF, 25.8 ± 0.07% ADF, 12.2 ± 0.23% CP, and 14.8 ± 0.40% starch.
3Includes: limestone, vitamin-trace mineral premix formulated to meet or exceed vitamin and trace mineral requirements (NASEM, 2016), monensin sodium (to provide 25 mg/kg DM; Rumensin, Elanco Canada Limited, Guelph, ON, Canada), chlortetracycline (to provide 35 mg/kg DM; Chlor 100, Bio-Agri Mix, Mitchell, ON, Canada). Micro-ingredients were included at 1.90% and 1.89% for control and 3-NOP diets, respectively.