Efficacy of a topical formulation of ivermectin against naturally acrquired gastro-intestinal nematodes in weaner cattle

Abstract
The efftcacy of a topical formulation of ivermectin against naturally acquired gastro-intestinal nematodes in weaner cattle was evaluated. At slaughter, 14–15 days after treatment, burdens of Ostertagia spp, Trichostrongylus axei and Oesophagostomum radiatum were significantly lowler in the treated calves than in the untreated controls (pCooperia spp and Trichuris ovis burdens in the treated group did not differ significantly at the 5% level of confidence from those in the control group.