Variable | Resazurin (Res, in mM) without Neutral Red (NR) | 0.5 mM NR | SEDa | P > F, Resb | P > F, NRc | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
No Res | Res (0.008) | Res (0.03) | Res (0.10) | Res (0.25) | Res (0.45) | No Res | Res (0.008) | ||||
SWG digested(mg) | 74.9 A | 75.2 A | 73.3 AB | 72.2 AB | 73.3 AB | 70.9 AB | 66.7 ABC | 64.3 BC | 2.39 | 0.597 | 0.967 |
Net μmol | |||||||||||
H2 | 0.13 B | 0.14 B | 0.10 B | 0.25 B | 0.27 B | 0.09 B | 2.23 A | 2.42 B | 0.29 | 0.154 | 0.999 |
Methane | 110.0 A | 109.6 A | 108.4 A | 107.3 A | 107.7 A | 106.1 A | 37.6 B | 35.2 B | 3.72 | 0.932 | 0.997 |
Formate | 0 B | 1.3 B | 0 B | 0 B | 0 B | 0 B | 23.7 A | 18.1 A | 4.0 | 0.785 | 0.846 |
Acetate | 359.1 A | 339.0 A | 338.2 A | 336.7 A | 337.4 A | 300.0 A | 222.7 B | 208.5 B | 18.3 | 0.176 | 0.990 |
Propionate | 140.1 | 148.2 | 137.5 | 143.8 | 144.7 | 138.4 | 160.5 | 153.7 | 7.44 | 0.714 | 0.976 |
Butyrate | 30.4 | 26.2 | 27.7 | 25.9 | 26.9 | 25.7 | 30.4 | 27.9 | 3.50 | 0.573 | 0.995 |
Isobutyrate | 1.3 AB | 2.1 A | 1.7 A | 0.9 AB | 1.5 AB | 1.0 AB | 0 | 0 | 1.43 | 0.314 | 1.000 |
Valerate | 4.0 AB | 2.0B | 2.5 B | 2.2 B | 2.2 B | 2.2 B | 5.6 A | 5.5 A | 0.78 | 0.227 | 1.000 |
Isovalerate + 2 MB | 4.7 | 2.6 | 4.4 | 2.2 | 3.3 | 2.4 | 0 | 0 | 1.4 | 0.585 | 1.000 |
Caproate | 0.31 | 0.38 | 0 | 0 | 0 | 0 | 0 | 0 | 0.14 | 0.113 | 1.000 |
Total C2–C6 VFA | 534.1 A | 520.5 A | 512.1 A | 511.6 A | 516.0 A | 469.9 AB | 416.7 B | 391.3 B | 25.6 | 0.277 | 0.953 |
Total VFA alkyld | 752.0 A | 741.0 A | 729.8 A | 722.1 A | 733.7 A | 675.6 AB | 647.3 B | 604.5 B | 33.0 | 0.313 | 0.867 |
Total alkyle | 861.8 AB | 850.6 AB | 838.2 AB | 829.4 AB | 841.5 AB | 781.7 AB | 684.9 BC | 639.7 C | 34.1 | 0.294 | 0.854 |
ACLf | 2.41 B | 2.42 B | 2.43 B | 2.41 A | 2.42 A | 2.44 B | 2.55 A | 2.55 A | 0.024 | 0.454 | 0.997 |
μmol H (mg SWG)−1 | 41.31 | 39.44 | 39.94 | 40.14 | 39.97 | 38.30 | 34.48 | 35.34 | 1.88 | 0.806 | 0.965 |
Combustion, kJ (g SWG digested)−1 | 9.94 | 9.51 | 9.65 | 9.67 | 9.65 | 9.26 | 8.65 | 8.46 | 0.83 | 0.832 | 0.608 |