期刊
JOURNAL OF VETERINARY PHARMACOLOGY AND THERAPEUTICS
卷 26, 期 5, 页码 337-341出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.1365-2885.2003.00495.x
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The bioavailability and pharmacokinetic disposition of florfenicol in broiler chickens were investigated after intravenous (i.v.), intramuscular (i.m.) and oral administrations of 15 and 30 mg/kg body weight (b.w.). Plasma concentrations of florfenicol were determined by a high performance liquid chromatographic method in which plasma samples were spiked with chloramphenicol as internal standard. Plasma concentration-time data after i.v. administration were best described by a two-compartment open model. The elimination half-lives were 168 +/- 43 and 181 +/- 71 min, total body clearance 1.02 +/- 0.17 and 1.02 +/- 0.16 L.kg/h, the volume of distribution at steady-state 4.99 +/- 1.11 and 3.50 +/- 1.01 L/kg after i.v. injections of 15 and 30 mg/kg b.w., respectively. Plasma concentration-time data after i.m. and oral administrations were adequately described by a one-compartment model. The i.m. bioavailability and the oral bioavailability of florfenicol were 95, 98 and 96, 94%, respectively, indicating that florfenicol was almost absorbed completely after i.m. and oral administrations of 15 and 30 mg/kg b.w.
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