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Parascaris equorum (view source)

Revision as of 09:43, 15 July 2010

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The prepatent period of ''P. equorum'' is 10-16 weeks.

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~~==== Pathogenicity ====~~

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*''Larvae'' - eosinophilic tracts and haemorrhages in liver and lungs. Clinically, latter may lead to cough and nasal discharge.

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*''Adult worms'' - may cause unthriftiness, weight loss; impaction and intestinal perforation rarely.

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~~==== Epidemiology ====~~

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~~'''High Fecundity of Female ''Parascaris''''':~~

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*Infected foal may pass millions of eggs per day.

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~~'''Resistance of Eggs in Environment''':~~

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*Thick, pitted shell ensures prolonged survival (>1year).

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*Sticky outer shell aids passive spread.

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~~'''Susceptible Animals''':~~

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*Foals (<4months) - transmission from one year's foals to the next, infection normally occurring during the first month of life.

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*Adult horses - few worms only (carriers?).

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~~==== Control ====~~

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*Regular anthelmintic treatment.

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*Remove faeces from paddocks - collect every 2weeks (takes 2weeks to reach L2 stage).

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*Causes transient [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|nasal discharge]] when migrating through [[Lungs Inflammatory - Pathology#Infectious causes of pneumonia|lungs]]

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**Foals and weanlings

[[Category:Ascaridoidea]][[Category:Horse_Nematodes]]

[[Category:To_Do_-_Max]]

Cmcory

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Parascaris equorum (view source)

Revision as of 09:43, 15 July 2010

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