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  • Title: Pharmacokinetics and residues of ciprofloxacin and its metabolites in broiler chickens.
    Author: Anadón A, Martínez-Larrañaga MR, Iturbe J, Martínez MA, Díaz MJ, Frejo MT, Martínez M.
    Journal: Res Vet Sci; 2001 Oct; 71(2):101-9. PubMed ID: 11883887.
    Abstract:
    The pharmacokinetic properties of ciprofloxacin and its metabolites were determined in healthy chickens after single i.v. and oral dosage of 8 mg ciprofloxacin kg(-1) bodyweight. After i.v. and oral administration, the plasma concentration-time graph was characteristic of a two-compartment open model. Mean (SD) elimination half-life and mean residence time of ciprofloxacin in plasma were 8.84 (2.13) and 8.54 (1.64) hours, respectively, after i.v. administration and 11.89 (1.95) and 13.32 (2.65) hours, respectively, after oral administration. Mean maximal plasma concentration of ciprofloxacin was 2.63 (0.20) microg ml(-1), and the interval from oral administration until maximum concentration was 0.36 (0.07) hours. The mean oral bioavailability of ciprofloxacin was found to be 69.12 (6.95) per cent. Ciprofloxacin was mainly converted to oxociprofloxacin and desethyleneciprofloxacin. Considerable kidney, liver, muscle and skin + fat tissue concentrations of ciprofloxacin and its metabolites oxociprofloxacin and desethyleneciprofloxacin were found when ciprofloxacin was administered orally (8 mg kg(-1) on 3 successive days). It was estimated that mean tissue concentrations of ciprofloxacin and its metabolites ranging between 0.011 to 0.75 microg g(-1) persisted for 5 days.
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