Small Instestinal impaction causes total or partial obstruction of the instestinal lumen resulting in colic. The obstruction is most often associated with ascarid infection in young horses, or ileal impaction due to ingestion of bermuda grass in the USA or tapeworm infefection in the UK. | Small Instestinal impaction causes total or partial obstruction of the instestinal lumen resulting in colic. The obstruction is most often associated with ascarid infection in young horses, or ileal impaction due to ingestion of bermuda grass in the USA or tapeworm infefection in the UK. |