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目的了解清远市市售淡水鱼体内常用抗生素残留水平,为制定有效的监管措施提供依据。方法 2011年–2012年连续两年随机采集清远市本地区各类淡水鱼,共采集240份样品,采用高效液相色谱法进行土霉素、四环素、氯霉素和金霉素的检测。结果 240份样品合格率为94.6%,两年内的检出率差异无统计学意义(P>0.05),四种抗生素的检出率差异有统计学意义(P<0.05),四种抗生素的超标率差异有统计学意义(P<0.05),四个季节的超标率差异有统计学意义(P<0.05),不同产地的样品抗生素超标率差异有统计学意义(P<0.05),四种抗生素中土霉素超标率最高,为4.2%。结论清远市市售淡水鱼部分存在抗生素残留,需加强养殖和销售的管理。
Objective To understand the levels of commonly used antibiotics in the freshwater fish market in Qingyuan, and to provide basis for the development of effective regulatory measures. Methods A total of 240 samples were collected from freshwater fish in Qingyuan City for two consecutive years from 2011 to 2012. The contents of oxytetracycline, tetracycline, chloramphenicol and chlortetracycline were detected by high performance liquid chromatography (HPLC). Results The pass rate of 240 samples was 94.6%. There was no significant difference in the detection rate within two years (P> 0.05). The detection rate of four antibiotics was statistically significant (P <0.05) (P <0.05). There was a significant difference between the four seasons (P <0.05), and there was significant difference between the two groups (P <0.05). The four antibiotics Oxytetracycline exceeded the highest rate of 4.2%. Conclusion There are antibiotic residues in the freshwater fish market in Qingyuan City, so it is necessary to strengthen the management of breeding and marketing.