Oral bioavailability and pharmacokinetics of baquiloprim in dwarf goats
Lewicki, J. | Maas, R.F.M. | Witkamp, R.F. | Miert, A.S.J.P.A.M. van
The pharmacokinetics of baquiloprim at a dose of 8 mg kg-1 bodyweight were determined after its intravenous and intra-ruminal administration to seven healthy female dwarf goats. After intravenous injection, the plasma elimination curve showed a rapid distribution phase (mean [SD] t1/2 alpha, 0.89 [0.4] hours). The mean volume of distribution at steady-state (Vdss) was 14.1 (2.7) litres kg-1 bodyweight. The mean elimination half-life (t1/2 beta) was 14.0 (2.3) hours. After intra-ruminal administration its maximum concentration in plasma (Cmax) was 0.09 (0.01 microgram per milliliter-1 and this maximum was not reached until approximately 35 hours after administration. The systemic oral bioavailability, calculated up to 48 hours after dosing, was 33.7 (7.1) per cent. Owing to a prolonged absorption phase, the data from only four of the goats fitted reasonably to a compartmental model.
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