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The presence of tetracyclines and sulfonamides in swine feeds and feces: dependence on the antibiotic type and swine growth stages

文献类型： 外文期刊

作者： Xu, Meilan 1 ; Li, Helian 1 ; Li, Shiwei 1 ; Li, Cheng 2 ; Li, Jinyang 1 ; Ma, Yibing 3 ;

作者机构： 1.Jinan Univ, Sch Water Conservancy & Environm, Jinan 250022, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China

3.Macau Univ Sci & Technol, Macau Environm Res Inst, Taipa 999078, Macau, Peoples R China

关键词： Swine farms; Feeds; Feces; Antibiotic levels; Tetracyclines; Sulfonamides

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

ISSN： 0944-1344

年卷期： 2020 年 27 卷 34 期

页码：

收录情况： SCI

摘要： Swine farms are one of the important sources of antibiotics in the environment. In this study, 42 samples of compound feed and feces of swine collected at different growth stages from intensive farms were evaluated for the occurrence and concentrations of three tetracyclines (TCs, namely oxytetracycline, chlortetracycline, and doxycycline) and three sulfonamides (SAs, namely sulfadiazine, sulfadimidine, and sulfamethoxazole). To check for other additional sources of antibiotic administration, ratios (R) of the measured and the predicted levels of each antibiotic excreted via feces were also estimated. Our results showed that the maximum concentration of TCs was 376,210 mu g kg(-1)and 541,020 mu g kg(-1)in the feeds and feces, respectively, both for oxytetracycline. In contrast, the highest concentration of SAs were 16.98 mu g kg(-1)for sulfadimidine in the feeds and 14.70 mu g kg(-1)for sulfadiazine in the feces. The concentrations of sigma TCs (sum of the three tetracyclines) in swine feeds and feces were found to be 1-4 orders of magnitude higher than those of sigma SAs (sum of the three sulfonamides). Approximately 36% of theRvalues were found to be greater than one, indicating other sources of administration such as injection and/or oral administration (via drinking water) may also contribute to the presence of antibiotics in feces. Most of the higherRvalues were found in starter pigs, which were generally administrated with antibiotics by multiple routes to prevent disease and promote swine growth. Our study suggests that comprehensive measures may be undertaken to control antibiotic use in intensive swine farms.

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