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Table 1 Chemical composition in faecal samples from horses with (case) and without (control) free faecal liquid (FFL) in Sweden and Norway (sub-study I)

From: Chemical composition and physical characteristics of faeces in horses with and without free faecal liquid – two case-control studies

 

Case

Control

P-value

Mean

SD

Mean

SD

DM, g/kg

184.2

10.50

185.3

9.43

0.78

Ash, g/ kg DM

86.0

27.23

81.3

27.45

0.30

Sodium, g/ kg DM

2.2

2.09

2.1

1.79

0.25

Potassium, g/ kg DM

12.6

3.83

10.9

3.64

0.33

Calcium, g/ kg DM

4.3

1.57

4.1

1.60

0.68

Phosphorous, g/ kg DM

4.3

1.19

4.6

1.28

0.65

Magnesium, g/ kg DM

2.2

0.90

2.3

0.90

0.52

Sulphur, g/ kg DM

1.6

0.32

1.6

0.30

0.82

Ammonia-N, ml/g

119.1

70.13

126.5

80.12

0.67

Osmolality, osmol/kg

149.4

43.63

145.1

44.01

0.92

pH (log)

6.60

0.342

6.52

0.325

0.70

Lactic acid, mmol/l

1.9

2.42

2.3

2.15

0.04

Acetic acid, mmol/l

25.7

12.85

23.0

13.66

0.43

Propionic acid, mmol/l

7.9

4.00

7.3

3.99

0.56

i-Butyric acid, mmol/l

0.9

0.36

0.8

0.36

0.29

n-Butyric acid, mmol/l

2.4

1.66

1.9

1.54

0.34

i-Valeric acid, mmol/l

0.7

0.46

0.7

0.43

0.46

n-Valeric acid, mmol/l

0.5

0.19

0.5

0.20

0.98

Total SCFA, acid, mmol/l

41.6

19.64

39.0

19.84

0.49

C2 + C4/C3a

3.8

1.21

3.4

1.11

0.21

Lactic acid, % of SCFA

5.1

5.89

7.2

6.71

0.04

Acetic acid, % of SCFA

63.8

8.3

60.6

10.59

0.20

Propionic acid, % of SCFA

21.1

5.39

22.6

7.45

0.55

i-Butyric acid, % of SCFA

2.5

1.33

2.6

1.66

0.77

n-Butyric acid, % of SCFA

5.3

2.32

4.6

2.33

0.16

i-Valeric acid, % of SCFA

1.8

1.27

2.1

1.49

0.70

n-Valeric acid, % of SCFA

0.9

0.24

0.9

0.22

0.06

Sand, mm

0.1

0.13

0.0

0.04

0.05

Free liquid after centrifugation, ml

3.8

2.43

3.0

2.22

0.14

  1. aRatio between acetic acid (C2), propionic acid (C3) and butyric acid (C4)