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Parasites: Large Strongyles

Last Updated: July 16, 2008 | Related resource areas: Horses

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Strongyles

Strongyles are grouped as either large or small. The three primary species of large strongyles that infect the horse are Strongylus vulgaris, Strongylus endentatus, and Strongylus equinus.

The adult form of all strongyles (large or small) live in the large intestine. The larvae of large strongyles migrate through various parts of the body. Strongylus vulgaris, the bloodworm, will burrow into and migrate in the walls of the arteries that are the primary blood supplier to the small and large intestines. The other two large strongyles (Strongylus endentatus and Strongylus equinus) have similar life cycles, but their larval migration is primarily through the liver.

For more information see Strongyles in Horses.


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