Item

Treatment¹

N

H

MH

SEM

P²-value

pH

Mean pH

6.25

5.90

6.08

0.065

0.241

Minimum pH

5.76a

5.43b

5.64a

0.038

0.016

Maxmum pH

6.75a

6.29b

6.48ab

0.075

0.030

Area under pH 5.8, pH × h/d

0.05

0.93

0.16

0.311

0.385

Time under pH 5.8, h/d

0.61

6.89

2.08

2.043

0.340

% of daily time

2.55

28.70

8.68

8.514

0.340

VFA

Total, mmol/L

101.02a

91.34ab

87.94b

4.676

0.047

Acetate

64.76a

58.74ab

57.75b

2.891

0.080

Propionate

21.69a

19.70ab

17.26b

1.678

0.117

Butyrate

10.69a

9.21ab

9.54b

0.547

0.065

Isobutyric acid

0.81

0.81

0.78

0.031

0.672

Valerate

1.29a

1.14ab

0.97b

1.104

0.066

Isovaleric acid

1.79

1.74

1.65

0.105

0.520

Mol/100 mol

Acetate

64.54

64.31

65.72

0.992

0.471

Propionate

20.91

21.55

19.58

1.049

0.327

Butyrate

10.71

10.07

10.82

0.342

0.115

Isobutyric acid

0.82

0.90

0.90

0.036

0.086

Valerate

1.25

1.25

1.10

0.073

0.203

Isovaleric acid

1.77

1.93

1.89

0.069

0.235

A:P ratio

3.24

3.09

3.40

0.193

0.432

NH3-N, mmol/L

10.33a

7.63b

6.68b

0.855

0.005