Itema | Treatmentsb | SEM | P value | |
---|---|---|---|---|
Basal diet | AL | |||
Methane production | Â | Â | Â | Â |
 L | 61.6 | 64.0 | 3.46 | 0.151 |
 L/kg BW0.75 | 2.85 | 2.69 | 0.06 | 0.007 |
 L/kg DOM intake | 66.1 | 61.0 | 2.02 | 0.009 |
pH | 5.98 | 5.96 | 0.04 | 0.601 |
Ammonia, mg/100Â mL | 10.9 | 9.37 | 0.30 | 0.024 |
Total VFA, mmol/L | 109.4 | 125.1 | 4.15 | 0.014 |
Molar proportions, % | Â | Â | Â | Â |
 Acetate | 72.2 | 69.7 | 0.59 | 0.023 |
 Propionate | 14.8 | 14.9 | 0.42 | 0.906 |
 Isobutyrate | 1.32 | 1.86 | 0.09 | 0.011 |
 Butyrate | 9.43 | 11.0 | 0.24 | 0.003 |
 Isovalerate | 1.37 | 1.68 | 0.08 | 0.054 |
 Valerate | 0.89 | 0.71 | 0.04 | 0.363 |
 Acetate:propionate | 4.98 | 4.83 | 0.16 | 0.455 |