Response of Fumaric Acid Addition on Methanogenesis, Rumen Fermentation, and Dry Matter Degradability in Diets Containing Wheat Straw and Sorghum or Berseem as Roughage Source
Table 6
Effect of fumaric acid on gas kinetics (96 h) in sorghum- and berseem-containing diets.
Regression model Orskov and Macdonald without lag
Equation:
Diet type
HFD ( 80R : 20C)
MFD ( 50R : 50C)
LFD (20R : 80C)
Dose (mM)
0
5 mM
10 mM
15 mM
0
5 mM
10 mM
15 mM
0
5 mM
10 mM
15 mM
Sorghum diet
b
47.423
53.815
57.114
49.999
52.762
55.059
32.180
51.193
53.990
54.610
53.636
45.779
c
0.037
0.042
0.039
0.0351
0.048
0.052
0.069
0.041
0.058
0.070
0.064
0.055
0.990
0.993
0.994
0.984
0.998
0.996
0.997
0.989
0.995
0.997
0.998
0.989
Berseem diet
b
65.945
40.854
54.731
49.620
66.459
56.360
54.919
52.590
46.454
54.463
56.077
54.699
c
0.066
0.068
0.052
0.050
0.082
0.073
0.064
0.057
0.138
0.095
0.084
0.079
0.992
0.986
0.997
0.975
0.981
0.987
0.994
0.994
0.961
0.981
0.987
0.986
b: potential gas production (mL); c: gas production rate constant (mL/h); : regression coefficient; HFD: high-fiber diet; MFD: medium-fiber diet; LFD: low-fiber diet; R: roughage; C: concentrate.
