广西罗非鱼主产区养殖池塘抗生素残留状况分析

评价;广西

中图分类号： S965.12                                 文献标志码： A 文章编号：2095-1191（2019）04-0891-07

Abstract：【Objective】The residual distribution of antibiotics in culture ponds in the main aquaculture areas of tilapia in Guangxi was clarified. It provided reference for promoting the healthy and green development of tilapia breeding industry. 【Method】This experiment selected three representative tilapia freshwater aquaculture ponds in each area of central Guangxi， southern Guangxi and northern Guangxi（No.1#-9#） as the sampling sites. The culture environment（pond water and sediment） and residue of nine major antibiotics in GIFT tilapia adults（muscle and liver） including eofloxacin（ENR）， furanone metabolites（AMOZ）， nitrofuranotoin metabolites（AHD）， nitrofurazone metabolites（SEM）， furazolidone metabolites（AOZ）， sulfadiazine（SDZ）， sulfamethazine（SM2）， chloramphenicol（CAP） and oxytetracycline（OTC） were researched. 【Result】Only ENR， SM2 and OTC were detected in all the samples.The residual antibiotics in sediment and water samples were ENR， SM2 and OTC， ENR were detected from fish muscle， ENR and SM2 were found in liver samples. Residual detection concentrations of ENR and OTC in the sediment samples of these nine ponds ranged from 1.2400 to 19.3500 μg/kg and 1.3800 to 38.0100 μg/kg， respectively. Residues of SM2 was 4.2100 μg/kg. The ENR residue in water ranged from 0.0147 to 0.0227 μg/L， and OTC residue ranged from 0.0327 to 3.2420 μg/L. The SM2 residue was 0.0443 μg/L . The detected residual ENR in muscle was 2.8270 μg/kg. The detection range of ENR in liver tissues was 1.0567 to 6.3230 μg/kg， and the residual SM2 was 3.3000 μg/kg. In terms of the degree of antibiotic residues， the contamination level of antibiotics in 8# pond and 5# pond was more serious than other fish ponds. Among them， the ENR content in sediment samples of the 8# pond was as high as 19.3500 μg/kg， the SM2 and OTC contents were 4.2100 μg/kg and 8.4600 μg/kg， respectively. The residual amount of ENR in muscle samples was 2.8270 μg/kg. The residual amounts of ENR and SM2 in liver were as high as 6.3230 μg/kg and 3.3000 μg/kg， respectively. And 5# pond was more polluted by OTC than other fish ponds. The residual amount of OTC detected in the sediment was as high as 38.0100 μg/kg. As for food safety， in muscle tissue， only the ENR was detected in the muscle samples of fish in 8# fish pond， and the residual content was much lower than the limited maximum residue in the aquatic products set by China and Korea. But in countries such as the United States， Canada， and Japan， it was prohibited to detect ENR in the edible portion of aquatic products. In addition， no residual antibiotics were detected in the remaining muscle samples. 【Conclusion】There are relatively few residual antibiotics in the breeding pond environment in the main tilapia producing areas in Guangxi， and the cumulative residual quantity is low in the samples of fish tissues. The antibiotics pollution level is low， and the muscle is edible and harmless. But the residual risk of antibiotics in breeding environment should be closely paid attention to.

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