Using earthworm, Eisenia fetida, to bio-convert agro-industrial wastes for aquaculture nutrition

Show simple item record Musyoka, Sonnia N. Liti, David M. Ogello, Erick O. Meulenbroek, Paul Waidbacher, Herwig 2019-12-09T09:54:21Z 2019-12-09T09:54:21Z 2020
dc.identifier.citation Bio Research 15(1), 574-587. en_US
dc.identifier.issn 1596-7409
dc.description.abstract Agro-industrial wastes pose great economic and environmental hazards, while the economic success of aquaculture is threatened by the unsustainability of fishmeal use. The aims of the present study were to bio-convert agro-industrial wastes through vermicomposting, and then evaluate the potential of the by-products in promoting aquaculture nutrition. Coffee husks (CH), barley wastes (BW), and kitchen wastes (KW) were pre-composted and inoculated with earthworms, Eisenia fetida, and then vermicomposted for 70 days under a controlled environment. The vermicomposting by-products, i.e., earthworms and vermicast, were amalgamated in the ratio of 1:5 into bedding and then analyzed. There were neither earthworm mortalities nor significant difference (P>0.05) in cocoons produced by E. fetid in all treatments. The earthworms grown in KW attained the highest average weight gain of 27.8±0.7g, followed by CH (24.9±0.6g) and BW (24.8±0.7g). Earthworms grown in CH and BW had significantly higher (P<0.05) nutritional attributes. All experimental wastes produced vermicast with carbon and nitrogen ratios within the preferred agronomic limit of 20. The nutritional profile of the BW bedding was comparable with that of Caridina nilotica meal and was within the recommended dietary requirements of fish. The wastes can be bio-converted through vermicomposting into various forms appropriate for providing aquaculture nutrition. en_US
dc.language.iso en en_US
dc.publisher Faculty of Biological Science University of Nigeria en_US
dc.subject coffee husks en_US
dc.subject barley waste en_US
dc.subject kitchen waste en_US
dc.subject fish feed en_US
dc.subject eisenia fetida en_US
dc.subject vermicomposting en_US
dc.title Using earthworm, Eisenia fetida, to bio-convert agro-industrial wastes for aquaculture nutrition en_US
dc.type Article en_US

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