Efficacy of p-Toluoyl Chloride Phenylhydrazone against Gastrointestinal Helminths in Ovines

Abstract
A new anthelmintic candidate, p-toluoyl chloride phenylhydrazone, was administered to lambs in a paste formulation. The efficacy of this drug was determined at dose rates of 20, 30, 40 and 50 mg of active ingredient per kilogram of body weight. Helminths expelled by these dosages included Haemonchus contortus, Ostertagia circumcincta, Trichostongylus colubriformis, T. axei, Nematodirus filicollis, Cooperia curticei, Strongyloides papillosus, Oesophagostomum columbianum, Bunostomum trigonocephalum, Chabertia ovina, Moniezia expansa and M. benedeni.

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