Maggots are most heavily cultivated as a source of animal feed for livestock or fish.
When using indigenous fly species, one tactic (employed by the Songhai Center in Benin)[2] is to simply dump offal or meat that has exceeded the sell-by date in concrete bins.
An alternative method can be seen used more commonly in small-scale applications, such as two trash bins stacked on top of each other.
[3] The maggots are often sold and used as animal feed, in particular, for fish, chickens, pigs, and ducks.
[4][5] AgriProtein, a British company specializing in insect protein production, is pushing for more international business, claiming to hold the potential to shift the fish-feed market away from energy-expensive fish farming.