Catheterization of the colic branch of the ileocolic vein in swine.

A surgical procedure for repeated collection of blood from the colic branch of the ileocolic vein was established as an aid for nutritional studies on the colon in swine. With the animal in the dorsal position, a cannula was inserted from the ileal vein into the colic branch with a median incision at the lower part of the abdomen under a general anesthsia. Blood samples were collected intermittently every hour for 7 hours.