Anthelmintic efficacy of fenbendazole against Libyostrongylus douglassi and Houttuynia struthionis in ostriches.

Fenbendazole at a dosage rate of 15 mg FBZ per kg body mass, was 99,7% effective against adult and 82,5% effective against 4th stage larvae (L4) of Libyostrongylus douglassi. Fenbendazole at the same dose removed scolices and strobila of Houttuynia struthionis from 4 out of 5 treated birds and in the other there were only degenerating scolices, but all 5 untreated control birds were positive for H. struthionis.