The use of a "TT" shaped cannula for collection of duodenal digesta in sheep.
D000821:Animal Feed; D000818:Animals; D002404:Catheterization / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D004386:Duodenum / Q000032:analysis*; D007419:Intestinal Secretions / Q000032:analysis*; D012417:Rumen / Q000502:physiology; D012756:Sheep / Q000502:physiology*