Table 3.
Effects of biochar inclusion in cattle diets on intake and total tract digestibility (growing experiment)
| Item | Biochar inclusion, % DM | SEM | P-values1 | |||
|---|---|---|---|---|---|---|
| 0 | 0.8 | 3 | Lin | Quad | ||
| DM | ||||||
| Intake, kg/d | 8.01 | 7.88 | 7.83 | 0.21 | 0.43 | 0.64 |
| Excreted, kg/d | 3.57 | 3.35 | 3.57 | 0.16 | 0.71 | 0.18 |
| Digestibility, % | 55.7 | 57.6 | 54.7 | 1.12 | 0.25 | 0.11 |
| OM | ||||||
| Intake, kg/d | 7.25 | 7.16 | 7.12 | 0.19 | 0.52 | 0.74 |
| Excreted, kg/d | 3.02 | 2.83 | 3.03 | 0.14 | 0.68 | 0.18 |
| Digestibility, % | 58.6 | 60.6 | 57.7 | 1.16 | 0.31 | 0.10 |
| NDF | ||||||
| Intake, kg/d | 4.24 | 4.19 | 4.28 | 0.11 | 0.62 | 0.57 |
| Excreted, kg/d | 2.11 | 2.00 | 2.24 | 0.11 | 0.14 | 0.16 |
| Digestibility, % | 50.5 | 52.6 | 48.2 | 1.55 | 0.08 | 0.10 |
| ADF | ||||||
| Intake, kg/d | 2.83 | 2.82 | 2.93 | 0.08 | 0.13 | 0.53 |
| Excreted, kg/d | 1.52 | 1.47 | 1.63 | 0.08 | 0.16 | 0.33 |
| Digestibility, % | 46.7 | 48.1 | 45.0 | 1.50 | 0.29 | 0.35 |
| Energy | ||||||
| GEI, Mcal/d | 35.3 | 34.8 | 34.8 | 0.93 | 0.62 | 0.68 |
| Fecal Energy, Mcal/d | 14.8 | 13.8 | 14.8 | 0.68 | 0.67 | 0.13 |
| DEI, Mcal/d | 20.5 | 21.0 | 20.0 | 0.51 | 0.27 | 0.30 |
| DEI, Mcal/kg DMI | 2.57 | 2.68 | 2.56 | 0.05 | 0.52 | 0.08 |
1Linear and quadratic orthogonal polynomial contrasts.