[Effect of lasalocid on the fermentation of glucose by Neocallimastix frontalis RK 21].

In this study, the effect of the antibiotic lasalocid on the rumen anaerobic fungus Neocallimastix frontalis RK 21 was examined. It was thought that lasalocid increased the efficiency of feed utilization by cattle by altering the rumen fermentation. There was a decrease in H2 and acetate production against the increasing concentrations of lasalocid while propionate and butyrate did not appear to be effected. Glucose uptake was reduced considerably.