RumenCiliophoraFatty Acids, VolatileFermentationReticulumAnimal FeedSheepCattleRuminantsDigestionBacteriaAbomasumMethaneEukaryotaStomach, RuminantFibrobacterSilageNitrogenMethanobrevibacterRuminococcusPoaceaeAnimal Nutritional Physiological PhenomenaOmasumCelluloseGastrointestinal ContentsButyrivibrioAmmoniaMedicago sativaPeptococcaceaePropionatesGram-Negative Anaerobic BacteriaDietMonensinBacteroidesEubacteriumPrevotellaAnaerobiosisHydrogen-Ion ConcentrationHydrogenationDietary FiberMetagenomeCellobioseCerealsGastric JuiceGoatsEructationSelenomonasButyratesStarchZea mays