Table 2 Effect of the ensiling process on total FA content and composition, MDA , DM and WSC content in corn silage

pH

4.61^a

4.25^b

4.08^c

3.85^d

3.76^de

3.73^de

3.70^e

3.69^e

3.68^c

0.06

Total FA, mg/kg DM

23.68^a

23.04^a

21.73^b

19.56^c

19.43^c

19.45^c

19.51^c

19.57^c

19.75^c

0.76

Proportion in DM, mg/kg DM

C16:0

4.19^c

4.27^b

4.36^b

4.55^a

4.56^a

4.58^a

4.59^a

4.62^a

4.66^a

0.18

C18:0

1.73^c

1.78^c

1.88^b

1.85^b

1.91^a

2.04^a

2.02^a

2.05^a

2.09^a

0.09

C18:1

3.34^a

3.01^b

2.99^b

2.57^c

2.45^c

2.48^c

2.46^c

2.45^c

2.56^c

0.21

C18:2

11.92^a

10.64^b

9.74^c

8.53^d

8.34^d

8.23^d

8.18^d

8.19^d

8.21^d

0.26

C18:3

1.78^a

1.59^b

1.44^c

1.32^d

1.31^d

1.27^d

1.23^d

1.19^d

1.18^d

0.20

Proportion in total FA,%

C16:0

17.69^d

18.53^c

20.06^b

23.26^a

23.46^a

23.54^a

23.52^a

23.60^a

23.59^a

0.41

C18:0

7.31^d

7.73^d

8.65^c

9.46^b

9.83^a

10.49^a

10.35^a

10.47^a

10.58^a

0.52

C18:1

14.10^a

13.06^b

12.84^b

13.14^b

12.61^b

12.24^b

12.61^b

12.52^b

12.96^b

0.35

C18:2

50.33^a

46.18^b

44.82^c

43.61^d

42.92^d

42.31^d

41.93^d

41.84^d

41.56^d

0.62

C18:3

7.52^a

6.90^b

6.63^b

6.74^b

6.74^b

6.53^b

6.30^b

6.08^b

5.97^b

0.24

MDA, μmol/g FW

35.12^d

47.33^c

60.82^b

72.11^a

72.18^a

73.39^a

73.69^a

74.60^a

74.89^a

0.52

DM, g/kg FW

28.83

28.45

27.72

27.69

28.71

28.16

29.80

28.00

27.72

1.69

WSC, g/kg DM

9.93^a

9.62^a

9.24^a

6.73^b

6.71^b

5.27^bc

4.76^c

2.29^d

2.01^d

0.86