Insect farming is growing rapidly as a sustainable protein source, but the welfare of farmed insects at massive scale raises important ethical questions that the industry is beginning to address.
Insect farming welfare sits at the frontier of animal welfare science where the moral weight of individual insects remains genuinely uncertain. Unlike vertebrate farming, the evidence for subjective suffering in insects is contested — nociception exists but whether this constitutes phenomenal pain experience as we understand it is unclear. However, given the extraordinary numbers involved — trillions of individuals — even a small probability of morally relevant suffering demands attention. Precautionary welfare standards that optimize conditions within commercial constraints are reasonable even without certainty about insect sentience. Temperature, crowding, and slaughter method can all be optimized based on behavioral stress indicators, providing welfare improvement at modest cost.