Table 3. pH and volatile fatty acid concentrations in faeces for the two groups across the 11 study days.
| Study day | SED | Benjamini-Hochberg P-value | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Day | Group | D*G | Day | Group | D*G | |
| Acetate (mM) | C | 10.35 | 12.21 | 13.33 | 12.10 | 10.81 | 11.18 | 11.19 | 11.92 | 15.20 | 11.84 | 11.48 | 1.07 | 1.50 | 1.81 | 0.03 | 0.87 | 0.77 |
| A | 12.26 | 12.00 | 12.10 | 12.13 | 8.88 | 10.05 | 11.22 | 12.33 | 12.54 | 14.12 | 11.41 | |||||||
| Butyrate (mM) | C | 1.17 | 1.19 | 1.28 | 1.19 | 1.01 | 1.11 | 1.06 | 1.33 | 1.51 | 1.11 | 1.11 | 0.15 | 0.18 | 0.24 | 0.06 | 0.64 | 0.58 |
| A | 1.41 | 1.32 | 1.43 | 1.26 | 0.96 | 1.09 | 1.20 | 1.36 | 1.47 | 1.65 | 1.29 | |||||||
| Propionate (mM) | C | 3.28 | 3.45 | 3.77 | 3.42 | 2.87 | 2.99 | 2.71 | 3.02 | 3.60 | 2.95 | 3.19 | 0.34 | 0.72 | 0.68 | 0.00 | 0.64 | 0.58 |
| A | 3.80 | 4.21 | 4.34 | 3.56 | 2.59 | 2.95 | 3.16 | 3.85 | 4.16 | 4.90 | 3.74 | |||||||
| BCVFA (mM) | C | 1.22 | 1.51 | 1.32 | 1.11 | 1.07 | 1.21 | 1.26 | 1.38 | 1.69 | 1.10 | 1.06 | 0.41 | 0.33 | 0.62 | 0.63 | 0.57 | 0.58 |
| A | 1.73 | 1.56 | 1.56 | 3.38 | 1.61 | 1.40 | 1.60 | 1.44 | 1.51 | 1.84 | 1.39 | |||||||
| pH | C | 6.32 | 6.43 | 6.32 | 6.43 | 6.40 | 6.44 | 6.25 | 6.17 | 6.16 | 6.12 | 6.35 | 0.06 | 0.08 | 0.10 | 0.00 | 0.57 | 0.58 |
| A | 6.50 | 6.36 | 6.34 | 6.56 | 6.42 | 6.48 | 6.40 | 6.38 | 6.32 | 6.29 | 6.42 | |||||||
Faecal pH and VFA concentrations for samples collected over the 11 study days (final 3 days hay feeding and 8 days hay plus barley feeding) between the two groups (C, Control; A, Aged). BCVFA = Branched chain volatile fatty acids. SED: standard error of the difference.