期刊
VETERINARY JOURNAL
卷 208, 期 -, 页码 96-98出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.tvjl.2015.08.022
关键词
Pharmacokinetics; Oxytetracycline; Broiler chickens; Bioavailability; LC-MS/MS
The aim of this study was to determine the pharmacokinetics of oxytetracycline (OTC) in broiler chickens following intravenous (IV), intramuscular (IM), subcutaneous (SC) and oral (PO) administrations at a dose of 15 mg/kg bodyweight. Plasma concentrations of OTC were determined using liquid chromatography-tandem mass spectrometry and non-compartmental pharmacokinetic analysis was then conducted. The absorption half-life time was 1.23 +/- 0.36 h, 1.19 +/- 0.52 h, and 0.49 +/- 038 h after IM, SC and PO administration, respectively. The elimination half-life time was 27.41 +/- 6.06 h, 10.23 +/- 4.20 h, 7.83 +/- 0.56 h, and 14.86 +/- 9.23 h, and the mean residence time was 9.67 +/- 1.7 h, 11.45 +/- 1.76 h, 11.38 +/- 0.59 h, and 10.37 +/- 3.91 h after IV, IM, SC and PO administration, respectively. Bioavailability was 76.88 +/- 12.90%, 92.20 +/- 10.53% and 12.13 +/- 4.56% after IM, SC and PO administration, respectively, which indicated that OTC is poorly absorbed from the gastrointestinal tract in broiler chickens. (C) 2015 Elsevier Ltd. All rights reserved.
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