|
| Effects of tetracycline and oxytetracycline on aerobic composting process of sheep dung |
| Received:September 27, 2022 Revised:February 02, 2023 |
| View Full Text View/Add Comment Download reader |
| KeyWord:antibiotics;composting;urease;catalase |
| Author Name | Affiliation | E-mail | | WEN Zengxin | College of Grassland and Resource Environment, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot 010018, China | | | SUO Quanyi | College of Grassland and Resource Environment, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot 010018, China | paul98@sina.com | | WAN Yuchen | College of Grassland and Resource Environment, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot 010018, China | | | WANG Yanhong | College of Grassland and Resource Environment, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot 010018, China | |
|
| Hits: 791 |
| Download times: 683 |
| Abstract: |
| Aerobic composting is the principal technique to ensure the resource and safety of livestock and poultry manure. Nevertheless, the residual antibiotics in the manure can affect the composting process as resistant drugs. In this study, the effects of different tetracycline antibiotics on the chemical properties and enzymatic indexes during composting were analyzed, in order to establish theoretical basis and technical resource for the regulation of the aerobic composting process of livestock and poultry manure. Three treatments were considered for the test as follows： CK（sheep manure without antibiotics）, TC（sheep manure with tetracycline 10 mg·kg-1）, and OC（sheep manure with oxytetracycline 10 mg·kg-1）. The different treatments of sheep manure were subjected to aerobic composting（C / N was adjusted to approximately 30 / 1 using corn straw）. The results show that the high temperature period of TC and OC treatments were decreased. Compared with CK, the total accumulated temperature of TC treatment was significantly reduced by 49.3 ℃（P<0.05）. The addition of antibiotics slightly affected the potential of hydrogen, electrical conductivity and organic matter decomposition rate. Furthermore, TC and OC treatments significantly decreased and increased catalase and urease activities by 0.24 mg·g-1·min-1 and 0.13 mg·g-1·min-1, and by 17.38 mg·g-1·d-1 and 20.94 mg·g-1·d-1, respectively. From the above results, one can infer that tetracycline antibiotics alter the chemical properties and enzymatic indexes in the composting process, and the influence of different kinds of antibiotics varies. Thus, this effect should be fully considered in the composting process, and the conditions of fermentation should be highly considered to ensure complete decomposition. |
|
|
|
