title: Bioavailability and pharmacokinetics of ibuprofen in the broiler chicken.
abstract: The intravenous, intramuscular and oral pharmacokinetics of ibuprofen in broiler chickens were investigated. In a preliminary study, plasma ibuprofen concentration-time profiles, following i.v. (25 mg/kg) dosing were best described by a 2-compartment model. After intravenous administration, the volume of distribution at steady-state (Vd(ss)), the total systemic clearance (ClB), the elimination half-life (t1/2 beta) and the MRT were 0.303 L/kg, 482.3 ml/h.kg, 2.71 h and 1.02 h, respectively. After intramuscular administration of ibuprofen, the tmax and Cmax were 0.37 h, and 42.2 micrograms/mL, respectively, with an estimated bioavailability of 46.7%. After oral administration of ibuprofen, the tmax and Cmax were 0.31 h and 23.91 micrograms/mL, respectively, with an estimated bioavailability of 24.2%. This is a preliminary study, examining the use of ibuprofen in broiler chickens, and should be followed by tissue residue and efficacy studies in different disease states.
authors.affiliation: Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater 74078, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Roder
authors.forename: C L
authors.initials: CL
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Chen
authors.forename: S
authors.initials: S
authors.lastname: Sangiah
mesh_terms: D000042:Absorption; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D001682:Biological Availability; D002645:Chickens; D002851:Chromatography, High Pressure Liquid / Q000662:veterinary; D004305:Dose-Response Relationship, Drug; D006207:Half-Life; D007052:Ibuprofen / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D007273:Injections, Intramuscular / Q000662:veterinary; D007275:Injections, Intravenous / Q000662:veterinary; D008297:Male; D012015:Reference Standards
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D007052:Ibuprofen