Table 5 Composition of feeds used as substrate of the fermentation and main fatty acids (FA) in rumen liquor (RL) at the start of fermentation

Ingredients (g/kg DM)

Grass hay

103.45

103.45

98.04

Wheat straw

103.45

103.45

98.04

Mais meal

545.52

510.00

504.80

Soybean meal

42.76

42.76

40.52

Wheat bran

33.10

33.10

31.37

Bean flakes

20.69

20.69

19.61

Soybean flakes

12.41

12.41

11.76

Horsebean flakes

11.03

11.03

10.46

Barley

109.66

95.17

78.43

Stoned olive oli cake

---

50.00

90.00

Maize germ meal

17.93

17.93

16.99

Chemical composition (g/kg DM)

Dry Matter kg

724.70

719.00

713.0

expressed as (g/kg DM)

Crude protein (6.25 x N)

115.91

116.23

116.40

Crude fat

23.42

24.51

25.63

Neutral detergent fiber

366.00

379.40

391.81

Acid detergent fiber

194.73

205.63

215.82

Lignin

81.64

81.81

82.53

Ash

58.76

61.25

63.56

Non protein nitrogen

2.48

4.43

5.27

Soluble protein

8.57

9.72

10.39

Neutral detergent insoluble protein

2.50

5.60

7.99

Acid detergent insoluble protein

1.11

2.30

3.21

Main fatty acids in RL at the start

of fermentation (g/100 g of total FA)

C16:0

18.05

17.23

16.33

C18:0

1.90

1.79

1.79

cis-9 C18:1

23.92

25.19

26.81

cis-9,cis-12 C18:2

52.96

52.98

52.38

cis-9,cis-12,cis-15 C18:3

2.67

2.44

2.32