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  • Title: Critical test evaluations of oxfendazole and trichlorfon: effectiveness of a paste formulation in the horse.
    Author: Presson BL, Hamm D, Yazwinski TA, Pote LM.
    Journal: Am J Vet Res; 1984 Jun; 45(6):1203-4. PubMed ID: 6742583.
    Abstract:
    Critical tests were performed on 6 horses to evaluate the antiparasitic effectiveness of oxfendazole given in combination with trichlorfon in a paste formulation. Treatments were given orally as a single dose. The rates of active ingredient administration were 2.5 and 40 mg/kg of body weight for oxfendazole and trichlorfon, respectively. The combined activities of the 2 antiparasitic compounds proved 100% efficacious in the removal of adult Strongylus vulgaris, S edentatus, Oxyuris equi, and Parascaris equorum. Fourth stage O equi, and 2nd and 3rd instars of Gasterophilus nasalis also were completely removed. Second and 3rd stage instars of G intestinalis were removed at the rates of 98.1% and 98.8%, respectively. Nematodes of the "small strongyle" category were removed at the combined rate of 97.0%. Pronounced larvicidal effects of the test formulation were demonstrated via culturing fecal nematode eggs during the trial. Untoward effects of treatment were not seen in any of the trial animals.
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