Comparison of methanogen diversity of yak (Bos grunniens) and cattle (Bos taurus) from the Qinghai-Tibetan plateau, China

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).

ISSN: 1471-2180