The role of oxytetracycline-degrading bacterium TJ-1 on the hazard-free treatment of pig manure
土霉素降解菌TJ-1在猪粪无害化处理中的作用

The role of oxytetracycline(OTC)-degrading bacterium Staphylococcus sp. TJ-1 on the harmless treatment of pig manure was evaluated by physio-chemical analysis and Biolog technique. The results showed that the inoculation of strain TJ-1 could significantly improve the degradation efficiency of OTC from 62.7% to 82.0% on 21 d. At the end of the compost, the concentration of NH4+-N and NO3--N in the treatment with the strain TJ-1 inoculation were 42.36 and 238.06 mg·kg-1, respectively; while they were 189.34 and 439.38 mg·kg-1, respectively, in the treatment without the strain TJ-1 inoculation. Biolog analyses showed that the metabolism of OTC by strain TJ-1 could be beneficial to the degradation of nitrogen sources such as amino acids and aromatic compounds, which relieved the toxic effect of hazardous and noxious substances on other microorganisms and maintained the diversities and activities of bacterial community. This had a good effect on the balance of composting eco-system. Thus, the composting with the inoculation of high-efficient degrading bacteria is a good harmless treatment for pig manure to eliminate antibiotic residues.