Clazuril (R62690) has a coccidiocidal effect on the asexual and sexual developmental stages of both Eimeria species, resulting in a complete interruption of the life cycle^[1].

Clazuril (2.5 mg/pigeon) results in a rapid suppression of oocyst excretion, but oocysts are again observed in the feces 20 days after treatment. The fact that oocysts appears again in the feces 3 to 5 weeks after treatment can probably be explained only by a persistence of endogenous stages, which are not affected during treatment, rather than by a reinfection^[2].

373.19

C₁₇H₁₀Cl₂N₄O₂

101831-36-1

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