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== Introduction  ==
 
== Introduction  ==
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''[[Dictyocaulous arnfieldi]]'' is the lungworm of horses. The main source of infection are donkeys as these remain infected for years and contaminate horses' pasture. Infection can cycle in horses.  
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''[[Dictyocaulus arnfieldi]]'' is the lungworm of horses. The main source of infection are donkeys as these remain infected for years and contaminate horses' pasture. Infection can cycle in horses.  
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The prevalence of lungworm in horses is around 10-20% whereas in donkeys it is 75%. There are very few adult worms or eggs in the faeces in horses, whereas in donkeys there are many of both present. In horses, the period of patency is around 8 months or less, whereas in donkeys it is around 5 years, hence such a problem occurs when donkeys share pasture with horses. Also, clinical signs are rarely seen in donkeys, unlike horses where signs can be much more severe.  
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The prevalence of lungworm in horses is around 10-20% whereas in donkeys it is 75%. There are very few adult worms or eggs in the faeces in horses, whereas in donkeys there are many of both present. In horses, the period of patency is around 8 months or less, whereas in donkeys it is around 5 years, hence such a problem occurs when donkeys share pasture with horses. Also, clinical signs are rarely seen in donkeys, unlike horses where signs can be much more severe.
    
== Clinical Signs  ==
 
== Clinical Signs  ==
Author, Donkey, Bureaucrats, Administrators
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