From waste to feed: A review of recent knowledge on insects as producers of protein and fat for animal feeds

The use of insect-derived products in animal feed is a field of growing interest. Applying the circular economy principle, insects efficiently bioconvert organic waste into new products enabling advantages and value at different steps: reduction of waste management costs (landfilling, anaerobic digestion, incineration), lower resource use than other protein and fat productions, and value gain from the sale of insect-derived. After introducing the potential use of insects to upgrade food waste for animal feed purposes and briefly discussing the feed sector and the regulations that govern and limit the insect mass production and uses, this review presents the latest and most interesting research (from 2019) on the use of insect as feed.