Single and multiple oral amoxicillin treatment in geese: a pharmacokinetic evaluation. Issue 4 (4th July 2022)

• Record Type: Journal Article
• Authors: Sartini, I.; Łebkowska-Wieruszewska, B.; Fadel, C.; Lisowski, A.; Poapolathep, A.; Giorgi, M.
• Is Part Of: British poultry science. Volume 63:Issue 4(2022)
• Page Start: 493
• Page End: 498
• Publication Date: 2022-07-04
• Subjects: Antibacterial -- goose -- HPLC -- pharmacokinetics -- repeated dosage; Poultry -- Periodicals; Poultry industry -- Periodicals; 636.500941
• DOI: 10.1080/00071668.2022.2036699
• Languages: English
• ISSNs: 0007-1668

Abstract

ABSTRACT: 1. Although amoxicillin has broad-spectrum antibiotic activity and is extensively used in poultry, its use has never been investigated in geese. This study aimed to evaluate the pharmacokinetics of amoxicillin after a single and multiple oral doses in geese. 2. A total of 20 geese were enrolled in this study and randomly pooled in two groups ( n = 10). In group I, animals were treated with a single oral 20 mg/kg dose of amoxicillin, while geese in group II were administered multiple doses (20 mg/kg/day for 4 d). Concentrations of amoxicillin in plasma were analysed using a validated HPLC-UV method and drug plasma concentrations were modelled for each subject using a non-compartmental approach. 3. amoxicillin showed rapid absorption after a single-dose treatment, with an elimination half-life of approximately 1 h. Cmax, Tmax and AUC values differed statistically between groups I and II (after the first dose administered). A large variability was observed in the pharmacokinetic profiles and drug accumulation may occur after the multiple administration. 4. No accumulation in plasma was predicted from an in-silico simulation performed using the same multiple dosage schedule. The in-silico simulation does not seem to accurately predict in-field conditions.