Preventative Care: Equine Parasites Flashcards
what is praziquantel effective against?
Anoplocephala perfoliata (tapeworms)
which parasites are of concern now in horses?
cyathostomins (small strongyles)
tapeworms
why do adult horses require individualized attention to their parasite control needs?
vary greatly in their innate susceptibility to infection and level of strongyle egg shedding
what percentage of adult horses are usually shedding 80% of the eggs?
15-30%
how often should all adult horses be dewormed?
twice yearly
how often should horses younger than 3 years be dewormed?
at least 4 times a year
what are the main treatments for ascarids in young horses?
pyrantel
benzimidazoles
why do ascarids cause respiratory disease?
ascarid larval migration
what should you do if you are first deworming a 9-month-old weanling?
administer slow kill dewormer first
then give full dose
what can you use to deworm for cyathostomes in adult horses?
moxidectin
fenbendazole 5 days
what is the most common parasitic intestinal disease in horses?
cyathostomes (small strongyles)
what drug overdosage can cause serious adverse reactions in foals and miniature horses?
moxidectin (quest)
what is moxidectin (quest) useful for?
wide spectrum
encysted cyathostomes
better penetration into intestinal mucosa
what is the chief complaint with Strongylus vulgaris in adult horses?
moderate or severe colic
never dewormed
where do Strongylus equinus migrate?
liver
pancreas
where do Strongylus vulgaris larvae migrate?
arteries