Diagnosis, Treatment, and Prevention of Common Small Ruminant Parasites

摘要

External parasites of small ruminants include lice, keds and mange mites. They cause pruritus, fleece damage, and in some instances blood loss anemia. The most important internal parasite of sheep and goats is Hae-monchus, a blood sucking strongyle that can kill animals on contaminated pasture in a matter of weeks. Overuse of dewormers has caused the development of parasite resistance, and currently recommended programs emphasize selective treatment and eventual culling of animals that show severe clinical signs.