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  • Title: Efficacy of toltrazuril against experimental infections with Eimeria labbeana and E. columbarum in racing pigeons.
    Author: Van Reeth K, Vercruysse J.
    Journal: Avian Dis; 1993; 37(1):218-21. PubMed ID: 8452499.
    Abstract:
    The efficacy of toltrazuril against heavy experimental Eimeria labbeana and E. columbarum infections in racing pigeons was investigated. Pigeons were treated with toltrazuril at a dose of 20 mg/kg body weight before, during, and after the pre-patent period. In pigeons treated during pre-patency (1-5 days postinoculation [PI]), a 99.9% reduction in oocyst output was observed at day 7 PI. Treatment during patency (6-7 days PI) resulted in an interruption of oocyst shedding within 3 to 4 days. Pigeons treated with toltrazuril up to 14 days before the experimental infection showed on average a reduction of more than 97% in the number of oocysts in individual fecal samples. Finally, at reinfection, the immune response of pigeons previously treated during pre-patency was not altered compared with the response of infected unmedicated controls.
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