| AL1 | LL |
| P3 | ||||
| −LY | +LY | −LY | +LY | SEM2 | D | LY | D × LY |
Physicochemical parameters | ||||||||
pH | 5.95a | 5.95a | 6.19b | 6.07b | 0.02 | <0.0001 | 0.27 | 0.15 |
Eh4, mV | −166a | −167a | −147b | −140b | 1.7 | <0.0001 | 0.72 | 0.0002 |
rH4 | 6.36a | 6.33a | 7.48b | 7.46b | 0.07 | <0.0001 | 0.88 | 0.001 |
Fermentative parameters | ||||||||
Total VFA, mM | 94.3b | 89.6ab | 84.1a | 91.3b | 1.4 | 0.006 | 0.75 | 0.005 |
C2, mM | 49.6a | 48.9a | 48.7a | 53.6b | 0.68 | 0.24 | 0.13 | 0.012 |
C3, mM | 28.7c | 25.9b | 18.5a | 16.7a | 0.56 | <0.0001 | 0.0001 | 0.77 |
C4, mM | 9.9a | 9.8a | 12.2b | 16.5c | 0.36 | <0.0001 | <0.0001 | <0.0001 |
C2/C3 | 1.7a | 2.0b | 2.9c | 3.3c | 0.06 | <0.0001 | 0.0001 | 0.33 |
C5, mM | 4.0b | 3.0a | 2.6a | 2.4a | 0.11 | <0.0001 | 0.001 | 0.006 |
IC4, mM | 0.71b | 0.66b | 0.56a | 0.66b | 0.01 | <0.0001 | 0.19 | 0.0009 |
IC5, mM | 1.2a | 1.3a | 1.4b | 1.3b | 0.04 | 0.0002 | 0.71 | 0.60 |
NH3-N, mg/L | 81.2 | 81.6 | 33.1 | 37.9 | 3.3 | <0.0001 | 0.99 | 0.53 |
Lactic ac.5, mM | 6.0 | 4.9 | 4.3 | 4.8 | 0.67 | 0.11 | 0.91 | 0.80 |