Nitrogen fixation in ruminants.
D000818:Animals; D004044:Dietary Proteins / Q000378:metabolism; D006041:Goats / Q000378:metabolism*; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D009586:Nitrogen Fixation; D012417:Rumen / Q000382:microbiology
D004044:Dietary Proteins; D009584:Nitrogen