RumenDigestionNitrogenAnimal FeedFermentationSilageOmasumAnimal Nutritional Physiological PhenomenaAllantoinDietary ProteinsGastrointestinal ContentsAbomasumCattlePoaceaeDuodenumNorth DakotaFatty Acids, VolatileBacteriaEukaryotaDietary FiberAmmoniaZea maysBacterial ProteinsDietEatingHordeumRandom AllocationUreaSheepMedicago sativaSoybeansAmino AcidsDietary SupplementsHydrogen-Ion Concentration