Insect Farming Welfare: Cricket Production

House crickets and tropical crickets are widely farmed for human food and animal feed. As the sector grows rapidly, understanding cricket welfare - and the uncertainties surrounding it - is increasingly important for ethical food production.

Key Facts

Crickets (primarily Acheta domesticus and Gryllus bimaculatus) are among the most widely farmed insects globally
They are marketed as a sustainable protein source, with significantly lower land, water, and greenhouse gas footprints than conventional livestock
The scientific evidence for cricket sentience is contested but growing - they show avoidance learning and nociception
Crickets have a nervous system with approximately 1 million neurons and exhibit complex behaviours including territory defence and mate assessment
Common welfare concerns include overcrowding, inadequate temperature and humidity control, and slaughter by freezing or drying
Crickets are ectothermic and require specific thermal environments (28-32 degrees C for optimal welfare and productivity)
Starvation before slaughter is a common practice to clear the gut for food safety, which may cause suffering
The UK Food Standards Agency has approved crickets for human consumption, with welfare guidance under development

Welfare Considerations

Cricket welfare sits in a zone of genuine moral uncertainty. The probability of meaningful suffering is lower than for vertebrates but non-negligible given evidence for nociception and learning. At industrial scale - billions of crickets farmed globally - even a small probability of suffering translates to enormous potential harm in aggregate. Current farming conditions frequently involve overcrowding, suboptimal temperature management, and slaughter methods that are not instantaneous. Pre-slaughter starvation lasting 24-48 hours is particularly concerning from a welfare perspective. Improved slaughter methods (rapid freezing to lethal temperatures, CO2, boiling) and better environmental management are achievable improvements that align with both welfare and productivity goals.

What You Can Do

Support the development of evidence-based cricket welfare standards through organisations like Rethink Priorities
Advocate for rapid-kill slaughter methods to replace slow freezing in the insect food industry
When purchasing cricket-based food products, seek producers with transparent welfare commitments
Engage with food regulators to include welfare standards in insect food licensing frameworks
Support research into cricket sentience and nociception to better inform welfare decisions
Recognise that cricket protein, despite welfare uncertainties, has a dramatically lower welfare footprint per gram than conventional meat