Dynamics of oxytetracycline, sulfamerazine, and ciprofloxacin and related antibiotic resistance genes during swine manure composting 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of Environmental Management
年/卷/期
2019 / 230 /
页码
102-109
ISSN号
0301-4797
作者单位
Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, China New Zealand Joint Lab Soil Mol Ecol,Minist, Beijing 100081, Peoples R China;Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, China New Zealand Joint Lab Soil Mol Ecol,Minist, Beijing 100081, Peoples R China;Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, China New Zealand Joint Lab Soil Mol Ecol,Minist, Beijing 100081, Peoples R China;Nanjing Forestry Univ, Coll Biol & Environm, Nanjing 210037, Jiangsu, Peoples R China;Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, China New Zealand Joint Lab Soil Mol Ecol,Minist, Beijing 100081, Peoples R China;
作者
Cheng, Dengmiao;Feng, Yao;Liu, Yuanwang;Xue, Jianming;Li, Zhaojun;
摘要
Understanding the dynamics of veterinary antibiotic and related antibiotic resistance genes (ARGs) during swine manure composting is crucial in assessing the environmental risk of antibiotics, which could effectively reduce their impact in natural environments. This study investigated the dissipation of oxytetracycline (OTC), sulfamerazine (SM1) and ciprofloxacin (CIP) as well as the behaviour of their corresponding ARGs during swine manure composting. These antibiotics were added at two concentration levels and two different methods of addition (single/mixture). The results indicated that the removal efficiency of antibiotics by composting were >= 85%, except for the single-SM1 treatment. The tetracycline resistance genes (TRGs) encoding ribosomal protection proteins (RPP) and efflux pump (EFP) and fluoroquinolone resistance genes (FRGS) could be effectively removed after 42 days. On the contrary, the TRGs encoding enzymatic inactivation (EI) and sulfonamide resistance genes (SRGs) were enriched up to 31-fold (sul2 in single-low-SM1). Statistical analyses indicated that the behaviour of these class antibiotics and ARGs were controlled by microbial activity and significantly influenced by environmental factors (mainly C/N, moisture and pH) throughout the composting process.
机翻摘要
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关键词/主题词
Veterinary antibiotic;Oxytetracycline;Sulfamerazine;Ciprofloxacin;Antibiotic resistance genes;Swine manure composting;
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