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Table 1 Effects of herbage from the three elevations on ruminal fermentation in yaks

From: Altitude influences microbial diversity and herbage fermentation in the rumen of yaks

Item

Altitude d

SEM e

P value

L

M

H

pH

6.76

6.73

6.69

0.0234

0.4585

NH3-N (mg/L)

79.43

75.14

73.04

1.5017

0.2125

TVFA (mmol/L)

21.31c

37.10b

40.64a

1.5587

0.0026

Acetate (%)

72.53b

73.32b

77.88a

0.5994

0.0060

Propionate (%)

11.53b

12.14b

13.78a

0.3456

0.0179

Butyrate (%)

11.62a

11.87a

4.84b

0.6264

0.0013

Isobutyrate (%)

1.45

1.47

1.51

0.0525

0.9170

Valerate (%)

1.26

1.14

1.13

0.0482

0.5054

Isovalerate (%)

0.81

0.83

0.85

0.0343

0.9101

  1. a,b,c Values in the same row with different superscript letters differ significantly (P < 0.05)
  2. d L, 2800 m; M, 3700 m; H, 4700 m
  3. e Standard error of the mean