title: Vermicomposting of sludge from animal wastewater treatment plant mixed with cow dung or swine manure using Eisenia fetida.
abstract: Vermicomposting of animal wastewater treatment plant sludge (S) mixed with cow dung (CD) or swine manure (SM) employing Eisenia fetida was tested. The numbers, weights, clitellum development, and cocoon production were monitored for 60 days at a detecting interval of 15 days. The results indicated that 100 % of the sludge can be the suitable food for growth and fecundity of E. fetida, while addition of CD or SM in sludge significantly (P < 0.05) increased the worm biomass and reproduction. The sludge amended with 40 % SM can be a great medium for the growth of E. fetida, and the sludge amended with 40 % CD can be a suitable medium for the fecundity of E. fetida. The addition of CD in sludge provided a better environment for the fecundity of earthworm than SM did. Moreover, vermicomposts obtained in the study had lower pH value, lower total organic carbon (TOC), lower NH4 (+)-N, lower C/N ratio, higher total available phosphorous (TAP) contents, optimal stability, and maturity. NH4 (+)-N, pH and TAP of the initial mixtures explained high earthworm growth. The results provided the theory basic both for management of animal wastes and the production of earthworm proteins using E. fetida.
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Xie
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China.
authors.forename: Weibing
authors.initials: W
authors.lastname: Wu
authors.affiliation: Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Hao
authors.affiliation: Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China.
authors.forename: Dongmei
authors.initials: D
authors.lastname: Jiang
authors.affiliation: Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China.
authors.forename: Xuewei
authors.initials: X
authors.lastname: Li
authors.affiliation: Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Sichuan, 611130, China. blin16@126.com.
authors.forename: Lin
authors.initials: L
authors.lastname: Bai
mesh_terms: D000818:Animals; D018533:Biomass; D002417:Cattle; D004777:Environment; D005240:Feasibility Studies; D005260:Female; D005298:Fertility; D008372:Manure; D009835:Oligochaeta / Q000502:physiology*; D010758:Phosphorus; D012098:Reproduction; D012722:Sewage / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*; D013552:Swine; D018505:Waste Management / Q000379:methods*; D062065:Wastewater
chemical_list: D008372:Manure; D010758:Phosphorus; D012722:Sewage; D012987:Soil; D062065:Wastewater
keywords: Animal wastewater treatment plant; Cow dung; Earthworm; Sludge; Swine manure; Vermicomposting