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Detection of antibiotics in chicken eggs obtained from supermarkets in Ho Chi Minh City, Vietnam Part B Pesticides, food contaminants, and agricultural wastes

Yamaguchi, Takahiro, Okihashi, Masahiro, Harada, Kazuo, Konishi, Yoshimasa, Uchida, Kotaro, Hoang Ngoc Do, Mai, Thi Bui, Long, Nguyen, Thinh Duc, Phan, Ha Bich, Dang Thien Bui, Huong, Nguyen, Phuc Do, Kajimura, Keiji, Kumeda, Yuko, Van Dang, Chinh, Hirata, Kazumasa, Yamamoto, Yoshimasa
Journal of environmental science and health 2017 v.52 no.6 pp. 430-433
antibiotics, business enterprises, chicken eggs, ciprofloxacin, eggs, enrofloxacin, farmers, hens, liquid chromatography, monitoring, norfloxacin, screening, sulfadimethoxine, sulfamonomethoxine, supermarkets, tandem mass spectrometry, trimethoprim, Vietnam
The residual levels of antibiotics in Vietnamese eggs were monitored from 2014 to 2015. A total of 111 egg packages, distributed by 11 different companies, were collected from supermarkets in Ho Chi Minh City and the levels of 28 antibiotics were analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) screening method. Sixteen samples tested positive for antibiotics; a total of eight compounds (enrofloxacin, ciprofloxacin, norfloxacin, sulfadimethoxine, sulfamethazine, sulfamonomethoxine, tilmicosin and trimethoprim) were detected. Enrofloxacin was detected in eight samples, with two samples exhibiting concentrations exceeding 1,000 µg kg ⁻¹. Tilmicosin was detected in three samples at a range of 49–568 µg kg ⁻¹. We observed that two of the 11 companies frequently sold antibiotic-contaminated eggs (detection rates of 56 and 60%), suggesting that a number of companies do not regulate the use of antibiotics in egg-laying hens. Our findings indicate that livestock farmers require instruction regarding antibiotic use and that continual antibiotic monitoring is essential in Vietnam.