Main factors | Noa | GP, mL/g DM | CH4, mL/g DM | CH4, % on total GP | |||
---|---|---|---|---|---|---|---|
mean | s.d.b | mean | s.d. | Mean | s.d. | ||
Pressure | |||||||
 Constant | 145 | 198 | 94.4 | 31.8 | 17.94 | 15.7 | 5.76 |
 Increasing | 194 | 185 | 61.4 | 32.4 | 15.29 | 17.6 | 5.95 |
Incubation time, h | |||||||
 24 | 253 | 178 | 77.9 | 27.6 | 14.20 | 15.6 | 5.59 |
  ≥ 48 | 86 | 227 | 63.1 | 45.3 | 15.63 | 20.2 | 5.60 |
Collection time | |||||||
 Before feeding | 191 | 174 | 81.5 | 26.3 | 14.58 | 15.1 | 5.47 |
 After feeding | 148 | 212 | 65.9 | 39.7 | 15.68 | 19.0 | 5.79 |
Donor species | |||||||
 Sheep | 49 | 162 | 116.6 | 24.5 | 15.60 | 15.9 | 6.40 |
 Bovine | 290 | 195 | 67.7 | 33.4 | 16.29 | 16.9 | 5.85 |
N in the buffer | |||||||
 Presence | 296 | 191 | 78.4 | 32.2 | 17.07 | 16.8 | 6.18 |
 Absence | 43 | 190 | 71.0 | 31.5 | 11.52 | 16.7 | 3.82 |
BRF/FSc | |||||||
  < 130 mL/g DM | 134 | 172 | 77.6 | 25.0 | 12.74 | 14.7 | 5.54 |
 130-140 mL/g DM | 105 | 217 | 65.4 | 40.8 | 12.00 | 19.2 | 4.08 |
  > 140 mL/g DM | 100 | 187 | 81.5 | 32.5 | 20.17 | 17.0 | 7.02 |