Interaction of organophosphorus insecticide (Ciovap(R)) with phenothiazine anthelmintic in sheep with or without Haemonchus and Trichostrongylus species infection

"This study was undertaken to examine the extent of cholinesterase inhibition and clinical effects of repeated topical application of the organophosphorus insecticide (Ciovap (R)) and the oral administration of phenothiazine anthelmintic either alone or in combination in sheep with or without the added stress of clinical infection with gastrointestinal parasites Haemonchus and Trichostrongylus species."--Introduction.