[Effect of the mode of incorporation of lucerne serum on digestibility and microbial activity in the rumen]. / Effet du mode d'incorporation du sérum de luzerne sur la digestibilité et l'activité microbienne dans le rumen.

The extraction of protein from lucerne produces some liquid residue (called lucerne serum), the effects of which were studied on rumen microbial activity in 6 adult fistulated wethers. The introduction of the serum directly into the rumen stimulated cellulolytic activity whereas its incorporation into the lucerne solid residue before dehydration seemed to have no effect.