Fibrous foreign body impaction colic in young horses.

OF 207 horses with colic seen over a 36-month period, 10 were determined to have impaction colic caused by ingestion of synthetic fencing material. In 6 cases, there was history of exposure to rubberized fencing products. All horses affected were less than or equal to 3 years of age, had signs of mild to moderate abdominal pain, and were unresponsive to usual symptomatic therapy. At surgery, each horse was found to have an impaction involving the distal right dorsal colon, transverse colon, or small colon, and in some cases, all 3 bowel segments. In 9 cases, the involved segment of bowel could not be brought out of the abdominal cavity, and in each of these cases, the foreign bodies were removed through one or more enterotomies. Five of the 10 horses survived.