08/02/2024
Did you know horses can form stones in their intestines! Although enteroliths are uncommon, they can pose a serious health risk.
Equine enteroliths, also known as intestinal stones or calculi, are mineral masses that form in a horse's gastrointestinal system. They form around ingested foreign objects that horses eat but aren’t able to digest, such as pebbles, metal, hair, etc. Most are made up of magnesium-ammonium-phosphate (struvite) crystals that build up in thin layers around the object over the course of multiple years.
Enterolith risk factors include certain diets (high in calcium like alfalfa), breed predisposition, management practices and geographic region (Florida and California). They are more common in animals over the age of 10, but can occur in horses as young as a yearling or as old as 25 or more.
Enterolith’s can go unnoticed for years until they become large enough and move to areas of the intestine with smaller diameters, such as the small or transverse colon, and obstruct the passage of feed. Symptoms can range from mild, intermittent colic episodes to more acute, severe episodes of colic.
Abdominal radiographs, abdominal ultrasound and re**al palpation can be helpful in diagnosis, but false negatives are common. Definitive diagnosis and treatment consists of exploratory laparotomy and removal of the objects.
We hope this little pearl of information was interesting 😉