AffectedAnimals:
Horses. Younger horses, as well as those that have not been previously exposed to parasites, are more susceptible to infection.

Overview:
Horses that graze in pastures often become infected with large strongyle worms. These harmful parasites, transmitted through the feces of other infected horses, can cause significant gastrointestinal damage and anemia. In addition, as the parasitic larvae migrate within the horse's abdomen, they cause damage to organs such as the liver and the pancreas, which can lead to pancreatitis. Horses can die from a severe large strongyle infection; however, the parasites can be eliminated by appropriate deworming medications.

To prevent infection with large strongyle worms, animal owners should ensure that pastures are not overgrazed. This is optimally achieved by allocating two to three acres of pastureland per horse. In addition, all horses should be on a regular deworming schedule.