title: A full-scale house fly (Diptera: Muscidae) larvae bioconversion system for value-added swine manure reduction.
abstract: Manure produced from confined animal farms can threaten public and environmental health if not managed properly. Herein, a full-scale commercial bioconversion operation in DeQing County, China for value-added swine manure reduction using house fly, Musca domestica L., larvae is reported. The greenhouse-assisted larvae bioreactor had a maximum daily treatment capacity of 35 m(3) fresh raw manure per day. The bioconversion process produced a fresh larvae yield of 95-120 kg m(3) fresh raw manure. This process provided an alternative animal foodstuff (having 56.9 and 23.8% protein and total fat as dry matter, respectively), as well as captured nutrients for agricultural re-utilization. Bioconversion reduced odour emission (characterized by 3-methylindole) and the Escherichia coli (E. coli) index by 94.5 and 92.0%, respectively, and reductions in total weight, moisture and total Kjeldahl nitrogen in solids were over 67.2, 80.0 and 76.0%, respectively. Yearly profit under this trial period ranged from US$33.4-46.1 per m(3). It is concluded that swine manure larvae bioconversion technology with subsequent production of value-added bio-products can be a promising avenue when considering a programme to reduce waste products in an intensive animal production system.
authors: College of Environmental and Resource Science, China Academy of West Region Development, ZheJiang University, HangZhou, China.
authors: Hang
authors: H
authors: Wang
authors: Zhijian
authors: Z
authors: Zhang
authors: George F
authors: GF
authors: Czapar
authors: Mari K H
authors: MK
authors: Winkler
authors: JianGuo
authors: J
authors: Zheng
mesh_terms: D000821:Animal Feed / Q000191:economics; D000818:Animals; D019149:Bioreactors; D002681:China; D004926:Escherichia coli; D006793:Houseflies / Q000254:growth & development* / Q000378:metabolism; D019476:Insect Proteins / Q000032:analysis / Q000378:metabolism; D007814:Larva / Q000378:metabolism; D008372:Manure; D012862:Skatole / Q000378:metabolism; D013552:Swine; D018505:Waste Management / Q000191:economics / Q000295:instrumentation / Q000379:methods*
chemical_list: D019476:Insect Proteins; D008372:Manure; D012862:Skatole