The fate of antibiotic resistance genes in cow manure composting: shaped by temperature-controlled composting stages

文献类型： 外文期刊

第一作者： Sardar, Muhammad Fahad

作者： Sardar, Muhammad Fahad;Zhu, Changxiong;Geng, Bing;Song, Tingting;Li, Hongna;Ahmad, Hamaad Raza

作者机构：

关键词： Programmed temperature; Composting stages; Sulfamethoxazole; Antibiotic resistance genes; Carriers

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2021 年 320 卷

页码：

收录情况： SCI

摘要： Current work for animal manure processing is not up to the required standards and hence are not supposed to reflect the actual performance in antibiotic resistance control. As a result, this study carried out temperature controlled aerobic composting, with sulfamethoxazole (SMX) as a typical antibiotic. The results of four different treatments demonstrated that temperature, water content, C/N ratio, EC, and pH showed no significant (p > 0.05) difference. Antibiotic resistance genes (ARGs) significantly decreased in the initial 10 days of the thermophilic phase, but the abundance of sul1 and sul2 increased greatly after 30 days. Moreover, ARGs were closely related with each other during the late stages of composting. A noteworthy effect of composting properties, especially temperature on bacterial community, which then had a positive effect on ARGs abundances. These findings provided evidence that the standard composting was still insufficient to control antibiotic resistance.

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