ABSTRACT
1. The pharmacokinetics of danofloxacin was investigated in common pheasants, guinea fowls and Japanese quails after intravenous (i.v.) and oral (p.o.) administration at a dose of 10 mg kg(-1) body weight. Concentrations of the drug in serum were determined by high-performance liquid chromatography. The values of the pharmacokinetic parameters after both applications were calculated on the basis of a one-compartment model. 2. The elimination half-lives after i.v. injection were 6.82 ± 1.87, 3.31 ± 0.13 and 3.84 ± 0.89 h in pheasants, guinea fowls and quails, respectively. Total body clearance values were 0.45 ± 0.16, 1.23 ± 0.07 and 1.61 ± 0.34 l h(-1) kg(-1) in pheasants, guinea fowls and quails, respectively. 3. After p.o. administration, maximum serum concentrations were 0.54 ± 0.26, 0.51 ± 0.12 and 0.78 ± 0.11 µg ml(-1) respectively, reached at 2.04 ± 0.23, 10.4 ± 5.64 and 5.35 ± 0.47 h. Oral bioavailability values were 82.32% for pheasants, 79.46% for guinea fowls and 83.5% for Japanese quails. Pharmacokinetic/pharmacodynamic (PK/PD) predictive indices were also calculated and compared.
