FibrobacterGram-Negative Anaerobic BacteriaCelluloseRumenCellulaseCellobioseBacteroidesGram-Positive CocciRuminococcusXylan Endo-1,3-beta-XylosidaseEndo-1,4-beta XylanasesGlycoside HydrolasesXylansPrevotellaXylosidasesBacteria, AnaerobicSuccinic AcidBacteriaRNA, Ribosomal, 16SMolecular Sequence Data