The growing insect farming industry raises welfare questions about the sentience of farmed species, stocking densities, slaughter methods, and the moral obligations we may have to the billions of insects farmed for food and feed.
Insect farming welfare represents an emerging ethical frontier with significant scientific uncertainty. Evidence for insect nociception and pain experience is more limited than for crustaceans or vertebrates, but research is active and the precautionary principle applies. Some species, including crickets, show avoidance learning and protective behaviour following injury. If insects experience pain, the numbers involved in farming - trillions annually - dwarf all other farmed animal populations combined. Slaughter methods that minimise any potential suffering - rapid freezing causing rapid loss of consciousness - are preferable on welfare grounds. Welfare standards for insect farming are still being developed.