Poultry Insititute, Chinese Academy of Agricultural Sciences, Yangzhou 225003, China.
Poultry Insititute, Chinese Academy of Agricultural Sciences, Yangzhou 225003, China; College of Animal Science & Technology, Nanjing Agricultural University, Nanjing 210095, China.
Bioresour Technol. 2022 Jun;354:127237. doi: 10.1016/j.biortech.2022.127237. Epub 2022 Apr 27.
This study aimed to investigate the independent and combined effects of antibiotic and EM microbial agent on the nitrogen and humus (HS) transformations as well as the bacterial community successions during the chicken manure and rice husk composting. EM microbial agent accelerated the oxytetracycline (OTC) degradation, but slowed down the norfloxacin (NOR) degradation. OTC inhibited the TN retention and promoted the HS accumulation, both NOR and EM microbial agent inhibited the TN retention and HS accumulation, while EM microbial agent showed an antagonistic effect on TN immobilization with antibiotics and reduced the impacts of antibiotics on HS. Obvious bacterial community successions occurred. Firmicutes were related to HS transformation, while Firmicutes, Actinobacteriota and Proteobacteria were associated with nitrogen conversion. NOR promoted the transformations of NH-N to NO-N and FA to HA. The findings provided theoretical data for the recycle of antibiotic-contaminated manure and the efficient production of high-quality compost.
本研究旨在探讨抗生素和 EM 微生物制剂对鸡粪和稻壳堆肥过程中氮和腐殖质（HS）转化以及细菌群落演替的独立和联合作用。EM 微生物制剂加速了土霉素（OTC）的降解，但减缓了诺氟沙星（NOR）的降解。OTC 抑制了 TN 的保留并促进了 HS 的积累，NOR 和 EM 微生物制剂均抑制了 TN 的保留和 HS 的积累，而 EM 微生物制剂对抗生素的 TN 固定表现出拮抗作用，并降低了抗生素对 HS 的影响。出现了明显的细菌群落演替。Firmicutes 与 HS 转化有关，而 Firmicutes、Actinobacteriota 和 Proteobacteria 与氮转化有关。NOR 促进了 NH-N 向 NO-N 和 FA 向 HA 的转化。这些发现为受抗生素污染的粪便的循环利用和高质量堆肥的高效生产提供了理论数据。
