Table 2.
The concentrations of volatile fatty acids from yak and cattle rumen samples
| Volatile fatty acids | Yak (mmol/L) | Cattle (mmol/L) | Standard error | Significance |
|---|---|---|---|---|
| Acetate |
58.56 |
42.57 |
3.18 |
p < 0.004 |
| Propionate |
12.13 |
7.35 |
0.93 |
p < 0.001 |
| Isobutyric |
0.88 |
0.60 |
0.06 |
p < 0.016 |
| Butyrate |
9.03 |
7.25 |
0.49 |
p < 0.09 |
| Isovaleric |
1.02 |
0.51 |
0.12 |
p < 0.027 |
| Valeric |
0.07 |
0.13 |
0.06 |
p < 0.728 |
| Total volatile fatty acids |
81.69 |
58.41 |
4.61 |
p < 0.001 |
| A/P (Acetate to Propionate) | 4.83 | 5.80 | 0.19 | p < 0.004 |
* Concentrations of volatile fatty acids was analysed by gas chromatograph equipped with a DB-FFAP column (30 m × 0.25 μm × 0.25 μm; Agilent Technologies).