Microbial fermentation in the rumen.
D000821:Animal Feed; D000818:Animals; D018407:Bacterial Physiological Phenomena; D002417:Cattle; D004043:Dietary Fiber / Q000378:metabolism; D004044:Dietary Proteins / Q000378:metabolism; D056890:Eukaryota / Q000502:physiology; D005285:Fermentation; D005658:Fungi / Q000502:physiology; D008954:Models, Biological; D009584:Nitrogen / Q000378:metabolism; D012417:Rumen / Q000033:anatomy & histology / Q000382:microbiology*; D012464:Saliva, Artificial
D004043:Dietary Fiber; D004044:Dietary Proteins; D012464:Saliva, Artificial; D009584:Nitrogen