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Ascarids
or Roundworms (Parascaris equorum)
Lifecycle: Eggs are passed in manure and become infective larvae
in the grass. While grazing, the horse swallows the larvae, which
hatch and burrow into the walls of the intestine. From there, they
are carried by the bloodstream into the liver and lungs. The horse
coughs up the larvae and swallows them again. Larvae mature into
egg-laying adults in the intestine.
How
It Gets Into Your Horse: Ascarid larvae are swallowed as your
horse eats infected grass.
Dangers If Left Untreated: Ascarids are especially dangerous
to foals 6 months or younger. Severe infection in young horses can
build up quickly and lead to liver and lung damage, poor growth
and even death. Larvae in the bloodstream can cause coughing, fever,
pneumonia, bleeding lungs and respiratory infections. In the adult
stage, ascarids live in the small intestine where they can cause
colic, blockage, ruptured gut and death.
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ASCARIDS/ROUNDWORMS:
Species & Stages
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Chemical
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Parascaris
equorum - Adult
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Parascaris
equorum - L3 Larvae
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Parascaris
equorum - L4 Larvae
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fenbendazole
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ivermectin
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moxidectin
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oxfendazole
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oxibendazole
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pyrantel
pamoate
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pyrantel
tartrate- daily
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| pyrantel
tartrate - single |
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***
requires more than single syringe for 1,000 pound horse
Based
on registered label claims and FOI summaries for each product
on file with the FDA; single-dose application.
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©2003 Horse Health Products
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