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In pigs, ivermectin and doramectin are given at 0.3 mg/kg body wt SC, or invermectin is given in feed for 7 days at 0.1 mg/kg body wt/day for the treatment of all adult and larval stages of the common swine parasites, including the kidney worm Stephanurus. The exception isTrichuris suis, in which efficacy is ~80%.