Tissue residue distribution and withdrawal time estimation of trimethoprim and sulfachloropyridazine in Yugan black-bone fowl (Gallus gallus domesticus Brisson)
文献类型: 外文期刊
第一作者: Zhao, Lin
作者: Zhao, Lin;Lan, Jing;Sun, Xiangdong;Wang, Bing;Ni, Bei;Wu, Shuang;Zhang, Ruiying;Liao, Hui;Zhang, Dawen;Zhang, Yun
作者机构:
关键词: Trimethoprim; sulfachloropyridazine; Yugan black-bone fowl; tissue residue; Withdrawal time; >
期刊名称:FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT ( 影响因子:2.9; 五年影响因子:3.2 )
ISSN: 1944-0049
年卷期: 2023 年 40 卷 8 期
页码:
收录情况: SCI
摘要: Black-bone fowl are different from ordinary broilers in appearance and are considered to have rich nutritional properties. However, the metabolism of therapeutic drugs in black-bone fowl remains unclear. This study aimed to determine the tissue residue depletion kinetics of trimethoprim and sulfachloropyridazine in Yugan black-bone fowl, after daily oral administrations for 5 days at 4 mg/kg bw/day trimethoprim and 20 mg/kg bw/day sulfachloropyridazine, and to calculate the withdrawal times. After consecutive oral administrations, the tissues (liver, kidney, muscle and skin/fat) were collected at each of the following time points (0.16, 1, 3, 5, 7, 9, 20, 30 and 40 days). A newly-devised LC-MS/MS method was used to analyse the concentrations of trimethoprim and sulfachlorpyridazine in target tissues. The results showed that sulfachloropyridazine was rapidly metabolised in broilers, and there was no residue in all tissues 3 days post-administration. The concentration of trimethoprim in black-bone fowl skin/fat is the highest, and its metabolism rate is low. After 40 days, the concentration of trimethoprim in skin/fat is still as high as 140.1 & PLUSMN; 58.0 & mu;g/kg, exceeding the maximum residue limit. In order to protect consumers' health, it is suggested that the withdrawal time of TMP in Yugan black-bone fowl is 69 days.
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