期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 24, 期 24, 页码 19938-19945出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-9673-2
关键词
Ruminant excreta; Fecundity; Vermicompost; C:N ratio; Heavy metals; Eisenia fetida
资金
- University Grants Commission, New Delhi (India)
Present investigation aims on the vermicomposting of the excreta of different ruminants to convert it into manure employing earthworm species, Eisenia fetida. A total of 11 feedstocks (FS1-FS11) with different ratios were prepared from the excreta of different ruminants, viz., sheep, cow, buffalo, and goat. Semi-composted feedstocks were fed to E. fetida for 90 days under laboratory conditions. Vermicomposting enhanced the nutrient contents of ruminant excreta and converted it into odor-free and homogenous vermicompost. The growth of E. fetida was significant in all the feedstocks, but largest biomass gain was achieved in buffalo excreta followed by [sheep + buffalo] > [goat + buffalo] and [cow + buffalo] feedstocks. Highest fecundity (782 +/- 23.3) was also recorded in buffalo excreta followed by [goat + buffalo] excreta feedstock (484.6 +/- 15.7). In vermicomposted feedstocks, total organic carbon and organic matter was lesser, while NPK and heavy metals were higher as compared to raw feedstocks. C/N ratios of vermicomposts ranged from 15.37 to 38.56, which indicate a good level of maturity and stabilization of feedstocks.
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