Fill in the Blanks Equine PinwormOnline version Equine pinworm info and lifecycle by Ashley Best 1 perianal orally colon Oxyuris 4 5 no rectum ingested months direct anus fecal puritis fall cecum horses Oxybendazole Ivermectin ground Thiabendazole Equi The equine round worm is known as Zoonotic ? The lifecycle is . Its prepatent period is - It infects . It is transmitted - It resides in the , , and Its lifecycle is as follows . 1 ) Female worms lay eggs on area 2 ) eggs to 3 ) eggs are by a new host Symptoms include , or scratching rump . It is treated with , , , and washing of infected horse s