Insect farming is growing rapidly as a sustainable protein source for livestock feed. The welfare of billions of farmed insects is an emerging area of ethical concern.
The welfare of farmed insects occupies an uncertain ethical space — the scientific evidence for insect sentience is contested but not dismissed by serious researchers. The Cambridge Declaration on Consciousness includes insects in its scope. Given the billions of insects killed daily in farming operations, even a small probability of suffering represents a morally significant consideration. Precautionary approaches favor instantaneous killing methods (rapid freezing, carbon dioxide asphyxiation) over slow methods like drowning. As insect farming scales, investing now in welfare research and best practices is far easier than retrofitting an established industry.