Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Oxyuris equi

Category:


Species:
Ectoparasite


Description:
Untitled document

Pinworms (Oxyuris equi) are an annoying but not life threatening parasite of the

horse. Visual evidence of this parasite is seen when infected horses continually rub their

backsides against fence posts or other solid structures for relief. The female worm lives

in the large intestine and rectum area and

lays eggs in the skin of the perineal

region, which can cause pruritus

associated with this infection. The visual

irritation of the horse observed by the

owner makes this an important parasite.

Dewormers that fail to control this

parasite are obvious because owners

consider continual rubbing by the horse a

failed treatment.


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