• 1 January 1982
    • journal article
    • research article
    • Vol. 43  (9) , 1675-1677
Abstract
In 1973-1974, 4 controlled tests were performed in pony foals (17) raised parasite-free and experimentally infected with S. westeri. Administration of infective larvae by stomach tube in 1 test resulted in low-grade infections and tended to invalidate the test. Intraoral and percutaneous (intra-aural) administration of larvae resulted in suitable test infections for 1 and 2 tests, respectively. A paste formulation of dichlorvos at 36.3 mg/kg of body weight resulted in variable (71% to 100%) removal from 4 ponies. Treatment of 4 ponies with pastes of thiabendazole at the dosage rate of 44 mg/kg was consistently effective (> 99% to 100%) for eliminating intestinal infections of S. westeri.