In-feed antibiotic use changed the behaviors of oxytetracycline, sulfamerazine, and ciprofloxacin and related antibiotic resistance genes during swine manure composting

文献类型： 外文期刊

第一作者： Cheng, Dengmiao

作者： Cheng, Dengmiao;Lin, Hui;Liu, Yuanwang;Shehata, Ebrahim;Feng, Yao;Li, Zhaojun;Xue, Jianming;Xue, Jianming

作者机构：

关键词： In-feed antibiotic; Antibiotic resistance genes; Composting; Bacterial community; Potential host bacteria

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2021 年 402 卷

页码：

收录情况： SCI

摘要： The dynamics of oxytetracycline (OTC), sulfamerazine (SM1), ciprofloxacin (CIP) and related antibiotic resis-tance genes (ARGs) during swine manure composting were compared between manure collected from swine fed a diet containing these three antibiotics (T-D) and manure directly spiked with these drugs (T-S). The composting removal efficiency of OTC (94.9 %) and CIP (87.8 %) in the T-D treatment was significantly higher than that of OTC (83.8 %, P < 0.01) and CIP (83.9 %, P 0.05) in the TS treatment, while SM1 exhibited no significant difference (P < 0.05) between the two treatments. Composting effectively reduced the majority of ARGs in both T-D and T-S types of manure, especially tetracycline resistance genes (TRGs). Compared with the T-S treatment, the abundance of some ARGs, such as tetG, qepA, sul1 and sul2, increased dramatically up to 309-fold in the T-D treatment. The microbial composition of the composting system changed significantly during composting due to antibiotic feeding. Redundancy analysis suggested that the abundance of ARGs had a considerable impact on alterations in the physicochemical parameters (C/N, pH and temperature) and bacterial communities (Actinobacteria, Proteobacteria and Firmicutes) during the composting of swine manure.

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