ANTHELMINTIC EFFICACY OF OXFENDAZOLE IN CALVES

  • 1 January 1978
    • journal article
    • research article
    • Vol. 39  (8) , 1258-1261
Abstract
Oxfendazole, methyl [5-(phenylsulfinyl)-1H-benzimidazol-2-yl] carbamate given to calves at dose level of 2.5 mg/kg as a paste, bolus or a drench resulted in excellent (97-100%) anthelmintic efficacy against mature Ostertagia ostertagi, Trichostrongylus axei, Cooperia oncophora, C. mcmasteri, C. pectinata, C. punctata, Nematodirus helvetianus, T. longispicularis, Chabertia ovina and Oesophagostomum radiatum. Against the early 4th stage larvae of O. ostertagia and N. helvetianus, these formulations had anthelmintic efficacies of 71-87% and 21-65%, respectively. As the result of differences in drug intake by individual calves, a pelleted feed additive given as top dress on chopped alfalfa hay gave an unsatisfactory mean anthelmintic response. Anthelmintic action in individual calves ranged from none to 98-100%.

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