Insect farming is growing rapidly as a sustainable protein source, raising novel welfare questions about the sentience and moral status of insects farmed in enormous numbers.
Insect farming welfare presents unique challenges because the numbers involved are so vast and the scientific evidence for sentience is genuinely uncertain. The precautionary principle suggests that if there is meaningful probability that insects can suffer, welfare considerations apply. Key welfare areas include overcrowding causing cannibalism and stress, killing methods (heat, freezing, CO2), substrate quality affecting nutrition and behaviour, and life stage welfare (larvae vs adults have different needs and potentially different sentience). The scale of insect farming means small per-animal welfare improvements aggregate to enormous total welfare effects.