Using Hermetia illucens to process Ugandan waragi waste

Journal of Cleaner Production
Darja DobermannLouise V Michaelson

Abstract

Waragi, a form of homemade gin, is produced throughout Uganda in both legal and illegal breweries. Waste produced during the illegal brewing process is predominantly disposed of via indiscriminate dumping into surrounding environments and reports from local communities have indicated this to be harmful to crops and livestock. The larvae of Hermetia illucens are documented to consume a wide range of otherwise unappealing waste products. In addition to this, the prepupal stages of the larvae can serve as a high-quality protein feed for animal livestock. Therefore, the feasibility of the larvae of H. illucens to digest waragi waste was evaluated. A dietary toxicity trial was run to establish an LC50 value for waragi inclusion in larval diets. This was followed by a larger scale trial utilising waragi waste in combination with various in situ available feed stuffs to further assess the viability of processing waragi waste using H. illucens. Larvae were able to eat diets composed of up to 85% waragi waste without any significant impact (p > .01) on survival or growth. When combined with locally available feed sources, e.g. chicken offal, cottonseed cake, sunflower meal or groundnut cake, larvae showed high survival (>95%) and growth...Continue Reading

Citations

Jun 16, 2019·Animals : an Open Access Journal From MDPI·Cuncheng LiuHuaiying Yao
Mar 19, 2021·G3 : Genes - Genomes - Genetics·Tomas N GeneralovicChris D Jiggins

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