Doxycycline for Chickens and Ducks - PoultryDVM
The half-life elimination of doxycycline in chickens is 4.8 hours. The bioavailability in chickens is 41.3% (20 mg/kg dose). Caution: Prolonged treatment can have catabolic and immunosuppressive effects, reduce normal gut flora, and increases the risk of opportunistic secondary infections.
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