Gases mL/culture | Forage to concentrate ratio | P-value | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
9:1 | 7:3 | 5:5 | 3:7 | 1:9 | |||||||||
Control | Treatment | Control | Treatment | Control | Treatment | Control | Treatment | Control | Treatment | Additive | Diet | A × D | |
Cashew nut shell liquid | |||||||||||||
Total gas | 4.00abc | 3.58bc | 4.84ab | 4.27abc | 4.87ab | 3.32c | 5.08a | 3.56bc | 4.81ab | 3.69abc | <0.001 | 0.173 | 0.213 |
CO2 | 3.44ab | 2.96ab | 3.95ab | 3.72ab | 3.93ab | 2.81b | 4.08a | 3.01ab | 3.78ab | 3.18ab | <0.001 | 0.200 | 0.349 |
CH4 | 0.54bc (100) | 0.60bc (111) | 0.88abc (100) | 0.54c (61) | 0.93ab (100) | 0.50c (54) | 0.98a (100) | 0.53c (54) | 1.02a (100) | 0.50c (49) | <0.001 | 0.103 | 0.008 |
H2 | 0.01 | 0.02 | 0.01 | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.744 | 0.466 | 0.428 |
Monensin | |||||||||||||
Total gas | 4.62 | 4.44 | 5.75 | 4.80 | 5.47 | 4.82 | 5.17 | 4.68 | 5.31 | 4.39 | 0.009 | 0.442 | 0.742 |
CO2 | 3.61 | 3.30 | 4.47 | 3.71 | 4.03 | 3.69 | 3.79 | 3.66 | 3.96 | 3.50 | 0.059 | 0.535 | 0.875 |
CH4 | 1.13ab (100) | 1.14ab (101) | 1.27a (100) | 1.08ab (85) | 1.43a (100) | 1.12ab (85) | 1.36a (100) | 1.01ab (78) | 1.35a (100) | 0.73b (54) | <0.001 | 0.295 | 0.092 |
H2 | 0.01 | 0.01 | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.001 | 0.642 | 0.949 |