Insect Farming Welfare: Scale and Uncertainty

Insect farming is expanding rapidly as a sustainable protein source, but welfare standards lag far behind production growth despite growing evidence of insect sentience.

Key Facts

Global insect farming produces an estimated 1 million tonnes of protein annually and is growing rapidly
Black soldier fly larvae, mealworms, and crickets are the most commonly farmed species
Some insect species show nociception (pain response), learning, and stress behaviors
Stunning before killing is not required in most jurisdictions for insects
The EU updated animal welfare regulations to exclude insects but suggested precautionary consideration

Welfare Considerations

The welfare question for insects is genuinely uncertain but potentially enormous in scale. If even a small fraction of farmed insects experience suffering, the numbers involved - billions per day globally - make this a welfare concern of staggering magnitude. The precautionary principle suggests establishing welfare standards for insect farming now, while the science develops. This includes stocking density, thermal environment, and humane slaughter method research. Getting insect welfare right from the start prevents repeating the scaling mistakes of industrial animal agriculture.

What You Can Do

Support invertebrate sentience research at Cambridge and other institutions
Advocate for precautionary welfare standards in insect farming regulation
Choose insect protein products from producers engaging with welfare science
Learn about the Invertebrate Welfare Cause Area through Rethink Priorities publications