Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
On May 10, 1959, a yearling Hereford steer was admitted to the Stange Memorial Clinic with a history of abdominal pain, frequent straining, switching of the tail and general depression. A physical examination revealed that the mucous membranes were dark red, the abdomen distended and fluid could be felt by ballottement of abdomen. A rectal examination was then performed. The bladder was not distended, but gas-filled loops of the small intestine extending back into the pelvic cavity and a taut band extending forward on either side of the rectum was palpable.
"Incarceration of the Small Intestine of a Steer "Gut Tie","
Iowa State University Veterinarian: Vol. 22
, Article 15.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol22/iss1/15