| Variables | Treatment | SEM | P-value | |
| Control | Mootral | |||
| Intake |
|
|
|
|
| Solid feed (kg/d) | 2.84 | 2.93 | 0.14 | 0.55 |
| Total feed1 (g/kg0.75/d) | 77.1 | 79.3 | 2.73 | 0.43 |
| Methane |
|
|
|
|
| g/d | 70 | 54 | 3.90 | <0.01 |
| mg/g solid feed intake | 24.8 | 18.9 | 1.47 | <0.01 |
| g/kg BW | 0.31 | 0.21 | 0.02 | <0.01 |
| g/kg BW gain | 69.6 | 53.3 | 5.85 | 0.01 |
| g/kg carcass gain | 76.9 | 60.0 | 5.85 | 0.01 |
| Carbon dioxide |
|
|
|
|
| g/d | 5081 | 4841 | 176.3 | 0.19 |
| mg/g solid feed intake | 1.80 | 1.68 | 0.067 | 0.09 |
| Methane/Carbon dioxide | 0.014 | 0.011 | 0.0007 | <0.01 |