Veterinary Medicine International

Research Article

Effect of Sodium Lauryl Sulfate-Fumaric Acid Coupled Addition on the In Vitro Rumen Fermentation with Special Regard to Methanogenesis

Effect of treatment systems on fermentation pattern by mixed rumen microorganisms after 24 hours in vitro incubation.


Parameter	Control (no additives)	SLS- addition (defaunation)	Fumaric acid addition	SLS-Fumaric acid coupled addition	L.S.D.

pH value	${6.95}^{(a)}$ $\pm$ 0.0051	${6.88}^{(ab)}$ $\pm$ 0.0140	${6.79}^{(ab)}$ $\pm$ 0.0037	${6.76}^{(ac)}$ $\pm$ 0.0160	0.0332
Ammonia N. conc. (mg/dL)	${21.44}^{(a)}$ $\pm$ 0.18	${11.29}^{(ab)}$ $\pm$ 0.72	${10.15}^{(ac)}$ $\pm$ 0.48	${9.20}^{(ab)}$ $\pm$ 0.10	1.333
Total SCVFAs conc. ( $μ$ moL)	${542.4}^{(a)}$ $\pm$ 19.86	${431.6}^{(ab)}$ $\pm$ 10.05	${544.6}^{(b)}$ $\pm$ 29.96	${345.4}^{(ab)}$ $\pm$ 10.26	58.02
Acetic acid (moL/100 moL)	${51.44}^{(a)}$ $\pm$ 0.05	${54.08}^{(ab)}$ $\pm$ 0.36	${49.93}^{(abc)}$ $\pm$ 0.36	${50.0}^{(abd)}$ $\pm$ 0.48	1.05
Propionic acid (moL/100 moL)	${30.49}^{(a)}$ $\pm$ 0.017	${27.75}^{(ab)}$ $\pm$ 0.006	${34.10}^{(abc)}$ $\pm$ 0.016	${33.84}^{(abd)}$ $\pm$ 0.160	0.244
Butyric acid (moL/100 moL)	${16.78}^{(a)}$ $\pm$ 0.022	${16.36}^{(ab)}$ $\pm$ 0.013	${14.55}^{(abc)}$ $\pm$ 0.016	${14.73}^{(abc)}$ $\pm$ 0.017	0.053
Acetic/propionic ratio	${1.69}^{(a)}$ $\pm$ 0.010	${1.95}^{(ab)}$ $\pm$ 0.013	${1.46}^{(abc)}$ $\pm$ 0.010	${1.48}^{(abd)}$ $\pm$ 0.015	0.037

Data presented as means

\pm

SE,

N

=

5
Values having the same letter in the same raw are significantly different at

P < 0 . 05 .