ThePigSite Pig Health
Rectal Stricture(447) This is a condition often considered a sequel to rectal prolapse. Approximately a fingers length inside the rectum the tissues gradually shrink, scar tissue develops and eventually the tube completely closes. Affected pigs in the early stage of the disease often show a very loose diarrhoea that becomes projectile and a gradual increase in the size of the abdomen, with loss of condition.
The area where the stricture occurs is supplied by two tiny arteries that originate from the aorta. Some studies suggest that if these arteries are blocked or thrombosed by bacteria a rectal stricture will result. Erysipelas, Haemophilus parasuis, streptococci and salmonella have been implicated. If rectal strictures occur in large numbers at predictable times consider infection as a cause and assess the effects of strategic medication by injection, water or in-feed.