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http://dx.doi.org/10.17137/Korrae.2013.21.2.79

Effects of pig manure composts with different composting periods on feeding rate, biomass and cocoon production of earthworm(Eisenia fetida)  

Bae, Yoon-Hwan (Dept. of Life Science, Deajin University)
Park, Kwang-Il (Dept. of Life Science, Deajin University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.21, no.2, 2013 , pp. 79-87 More about this Journal
Abstract
Effects of pig manure with various composting periods(0, 15, 30, 50, 80 days) on feeding rate, biomass, cocoon production of earthworm(Eisenia fetida) population and physicochemical property of vermicast produced from pig manure were investigated. The feeding rate of earthworm was increased with longer composting period of pig manure. But the biomass production of earthworm population was highest upon the pig manure composted for 30 days. Upon the pig manure composted for 80 days, the biomass was severely reduced. Cocoon production was decreased with longer composting period and especially lower on the pig manure composted for 80 days. Values of pH, EC, C/N ratio of vermicasts produced from pig manure composts were lower than those of pig manures. And the organic material contents of vermicasts were uniformly reduced irrespective of composting duration of pig manure, whose values were 35.9-39.8%. From these results, the optimum composting period of pig manure for vermicomposting could be 15-30 days. And the application of vermicomposting upon the composted pig manure could be an efficient way for the treatment of pig feces, which can stabilize and recycle the organic wastes more rapidly than the conventional composting method.
Keywords
pig feces; composting; vermicomposting; Eisenia fetida;
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