The rapid growth of insect farming for food and feed raises questions about insect sentience and the welfare implications of farming billions of invertebrates.
Insect farming is expanding rapidly as a more resource-efficient protein production system, but the welfare implications have received less attention than the sustainability benefits. The sentience question is genuinely uncertain: insects show nociceptive responses and some learning behaviours consistent with basic experience, but whether this constitutes morally relevant subjective experience remains debated. The scale of insect farming — billions of individuals per production cycle — means that even small probability-weighted welfare costs per individual aggregate to potentially significant totals. A precautionary welfare approach argues for investing in insect welfare research, identifying slaughter methods that are more likely to be rapid and less aversive, and incorporating welfare consideration into insect farming standards rather than dismissing it pending certainty that may never arrive.