title: The effect of dermally applied levamisole against the parasitic nematodes of cattle.
abstract: A series of trials to establish the anthelmintic efficiency of levamisole, when applied dermally to calves, is described. The levamisole base was formulated in a suitable solvent system at 100 g/l and applied dermally at a dose rate of 8 mg base/kg. This gave efficiencies of 97.1-100%, 88.5-100%, 100%, 98.7-100% and 89.2-100% against adult Haemonchus placei, Ostertagia spp, Cooperia spp, Oesophagostomum radiatum and Trichostrongylus axei, respectively. Activity against the immature stages of H. placei was recorded at 100%, and against immature Cooperia spp the range was 96.3-100%. Extremely variable results were obtained against immature Ostertagia spp, efficiency ranging from 0% to 100%. Efficiency against adult Dictyocaulus viviparus was in the range of 84-100%. The potential advantage of a dermally applied anthelmintic is discussed.
mesh_terms: D000287:Administration, Topical; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D007978:Levamisole / Q000008:administration & dosage* / Q000627:therapeutic use; D009349:Nematode Infections / Q000188:drug therapy / Q000662:veterinary*; D012867:Skin
chemical_list: D007978:Levamisole