Efficacy of ivermectin against somatic Strongyloides ransomi larvae.

The efficacy of ivermectin against the somatic larval stages of Strongyloides ransomi was evaluated in three trials involving 35 pregnant gilts harbouring induced infections. Treatment at a rate of 300 micrograms/kg bodyweight subcutaneously, four to 16 days before farrowing, was highly effective as judged by counts of larvae in milk and worm burdens of piglets.