The multiple nature and potency for different micro-organisms of the vitamin B12 activity of calf rumen contents and faeces.
D000818:Animals; D001419:Bacteria; D002417:Cattle; D005243:Feces; D006397:Hematinics; D012417:Rumen; D014805:Vitamin B 12 / Q000378:metabolism*
D006397:Hematinics; D014805:Vitamin B 12
BACTERIA; VITAMIN B 12/metabolism