Animal Sciences Commons^™

Lysine Degradation By Ruminal Fusobacteriumnecrophorum (2010), E.A. Elwakeel, R.G. Amachawadi, A.M. Nour, M.E. Nassar

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted to characterize lysine fermentation by Fusobacterium necrophorum, a ruminal bacterium that is known to degrade amino acids. In Experiment 1, 7 strains of Fusobacterium necrophorum were inoculated into media containing lysine (50 mM), lactate (50 mM), or lysine plus lactate (50 mM each) as the major energy substrate to evaluate growth and ammonia production. All strains grew with lysine, lactate, or lactate plus lysine as the primary substrate. When grown with lysine, all strains produced ammonia as an end product, even if lactate was also present. Smaller concentrations of ammonia for medium containing lactate plus lysine …