Thermal Stress in Poultry Farming

Heat stress is one of the most significant welfare challenges in poultry farming, causing billions of birds to suffer and die as climate change intensifies summer temperatures.

Key Facts

Poultry cannot sweat and rely entirely on panting to regulate body temperature
Heat stress above 32 degrees Celsius causes measurable physiological damage in chickens
Global economic losses from heat stress in poultry exceed 2 billion dollars annually
Mortality events in summer can kill thousands of birds in a single facility in hours
Evaporative cooling systems dramatically reduce heat stress mortality when properly maintained
Dark Cornish Cross broilers are more heat susceptible due to their rapid growth genetics

Welfare Considerations

Chickens experiencing heat stress pant rapidly, extend their wings, and become lethargic as their body temperature rises. Prolonged heat stress causes intestinal barrier breakdown, immune suppression, and in severe cases, brain damage before death. Heat deaths in poorly ventilated poultry houses involve thousands of animals experiencing the same progressive physiological failure. The rapid growth genetics of modern broilers, which increase basal metabolic heat production, compound the problem significantly.

What You Can Do

Advocate for mandatory heat stress mitigation standards in poultry farming regulations
Support research into heat-tolerant poultry genetics that preserve welfare
Choose certified higher welfare poultry products from facilities with cooling standards
Reduce poultry consumption to decrease demand for intensive farming expansion
Donate to organizations working on poultry welfare in climate adaptation planning
Engage food companies to require heat stress mortality reporting from suppliers