The pharmacokinetics of single dose intramuscular amoxicillin trihydrate in tammar wallabies (Macropus eugenii).
Five tammar wallabies (Macropus eugenii) were injected intramuscularly with 10 mg/kg amoxicillin trihydrate. Serial blood samples were collected through to 26 hr postinjection. Plasma amoxicillin concentrations were measured using high-performance liquid chromatography. Pharmacokinetic parameters were estimated using noncompartmental analysis. The terminal half-life (1.77 +/- 0.40 hr) was comparable to that previously reported in domestic small ruminants. Without intravenous kinetic data, it is unclear whether the terminal phase is elimination- or absorption-dependent; both scenarios have been reported in domestic species. Plasma concentrations of amoxicillin remained above a reported minimum inhibitory concentration (MIC) breakpoint for staphylococci and streptococci for at least 8 hr; the MIC breakpoint for enterobacteria and enterococci was never attained.
University of Guelph, Guelph, Ontario N1G 2W1, Canada. dmclelland@zoossa.com.au
David J
DJ
McLelland
Brian G
BG
Rich
Peter H
PH
Holz
D000658:Amoxicillin / Q000097:blood / Q000493:pharmacokinetics*; D000818:Animals; D000900:Anti-Bacterial Agents / Q000097:blood / Q000493:pharmacokinetics*; D019540:Area Under Curve; D002851:Chromatography, High Pressure Liquid / Q000379:methods / Q000662:veterinary; D004305:Dose-Response Relationship, Drug; D005260:Female; D006207:Half-Life; D007273:Injections, Intramuscular / Q000662:veterinary; D007614:Macropodidae / Q000097:blood*; D008826:Microbial Sensitivity Tests / Q000662:veterinary; D013045:Species Specificity
D000900:Anti-Bacterial Agents; D000658:Amoxicillin