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Sci Rep. 2014 Oct 30;4:6844. doi: 10.1038/srep06844.

Attenuation of veterinary antibiotics in full-scale vermicomposting of swine manure via the housefly larvae (Musca domestica).

Author information

1
1] Institute of Environmental Sciences, College of Environmental and Resource Sciences, ZheJiang University, HangZhou, 310058, China [2] China Academy of West Region Development, ZheJiang University, HangZhou, 310058, China.
2
Agro-technology Extension Center at YuHang District, HangZhou, 311100, China.
3
Institute of Environmental Sciences, College of Environmental and Resource Sciences, ZheJiang University, HangZhou, 310058, China.
4
Institute of Soil Science, Chinese Academy of Sciences, East Beijing Road 71, NanJing, 210008, China.
5
Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, 37996-2010, USA.
6
HangZhou TianYuan Agriculture Development Co., Ltd. HaiTuo Ave 55, XiaoShan District, HangZhou, 321103, China.

Abstract

Animal waste from concentrated swine farms is widely considered to be a source of environmental pollution, and the introduction of veterinary antibiotics in animal manure to ecosystems is rapidly becoming a major public health concern. A housefly larvae (Musca domestica) vermireactor has been increasingly adopted for swine manure value-added bioconversion and pollution control, but few studies have investigated its efficiency on antibiotic attenuation during manure vermicomposting. In this study we explored the capacity and related attenuation mechanisms of antibiotic degradation and its linkage with waste reduction by field sampling during a typical cycle (6 days) of full-scale larvae manure vermicomposting. Nine antibiotics were dramatically removed during the 6-day vermicomposting process, including tetracyclines, sulfonamides, and fluoroquinolones. Of these, oxytetracycline and ciprofloxacin exhibited the greater reduction rate of 23.8 and 32.9 mg m(-2), respectively. Environmental temperature, pH, and total phosphorus were negatively linked to the level of residual antibiotics, while organic matter, total Kjeldahl nitrogen, microbial respiration intensity, and moisture exhibited a positive effect. Pyrosequencing data revealed that the dominant phyla related to Firmicutes, Bacteroidetes, and Proteobacteria accelerated manure biodegradation likely through enzyme catalytic reactions, which may enhance antibiotic attenuation during vermicomposting.

PMID:
25354896
PMCID:
PMC5381375
DOI:
10.1038/srep06844
[Indexed for MEDLINE]
Free PMC Article

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