Bot fly
Definition: chronic infectious parasitic disease of equine caused by larvae (bot) or adult worm of gastrophillus, characterised by chronic gastritis, loss of condition
Etiology:larvae or adult fly of gastrophillusG. nasalis, G. intestinalis, G. haemorrhoidlis
Distribution: wide distributed, present in Egypt
Species affected: all species of equine
Incidence: summer
egg
Ingest larvae through licking of leg
Migrate to stomach and some larvae migrate to brain , heart, lung Pass with
faeces after 10-12 month
Change to adult
Emaciation and colic Shying and head tossing due to fly
annoyance When the larvae present in rectum
occurs itching and prolapse to rectum
Congestion, swelling and hemorrhage in stomach
Direct detection of eggs on the hair in summer
Detection of larvae in faeces
Rectal ename by water and soap for removal of larvae adhering on rectal mucosa
ivermectin
Grooming of animal, clipping of hairs and burning it
Prophylactic treatment by anthelmentic
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