Parameters | Treatment | P-value | |||||
---|---|---|---|---|---|---|---|
CNT | OL | PO | SF | Tr | Day | Tr × Day | |
pH | 6.29 ± 0.11 | 6.80 ± 0.11 | 6.26 ± 0.06 | 6.33 ± 0.07 | NS | ** | NS |
Ammonia (mg/l) | 42.6 ± 1.65a | 37.9 ± 1.36b | 36.4 ± 1.08b | 36.9 ± 1.24b | ** | * | * |
Total VFA (mmol) | 89.42 ± 8.59b | 95.58 ± 7.81a | 91.11 ± 6.44b | 95.79 ± 3.15a | * | * | NS |
Acetate (%) | 59.22 ± 5.83 b | 63.70 ± 5.46a | 56.79 3.56b | 63.72 ± 2.01a | * | * | * |
Propionate (%) | 18.21 ± 2.11 | 19.62 ± 1.47 | 22.15 ± 2.81 | 20.22 ± 0.95 | NS | NS | NS |
Butyrate (%) | 8.19 ± 0.89 | 8.83 ± 0.99 | 8.13 ± 0.96 | 8.37 ± 0.71 | NS | * | NS |
Isobutyrate (%) | 0.76 ± 0.13b | 0.88 ± 0.11 a | 0.73 ± 0.04b | 0.68 ± 0.04b | * | NS | NS |
Valerate (%) | 2.18 ± 0.48 | 2.42 ± 0.13 | 2.14 ± 0.24 | 1.72 ± 0.28 | NS | * | * |
Isovalerate (%) | 0.86 ± 0.25 | 1.13 ± 0.13 | 1.17 ± 0.14 | 1.08 ± 0.16 | NS | NS | NS |
Acetate/Propionate | 3.25 ± 0.18 | 3.72 ± 0.22 | 2.56 ± 0.30 | 3.15 ± 0.19 | NS | NS | NS |