Livestock Heat Stress: Climate Change and Farm Animal Welfare

Rising temperatures from climate change are intensifying heat stress in farmed animals, reducing welfare and productivity while demanding urgent adaptation in agricultural systems.

Key Facts

Heat stress in dairy cows costs the US industry over $1 billion annually in reduced production
Temperatures above 25 degrees Celsius with high humidity cause measurable physiological stress in cattle
Poultry are particularly vulnerable with broilers experiencing mass mortalities during heat events
Shade, fans, misters, and modified feeding times are proven heat stress mitigation strategies
Climate projections suggest heat stress days will increase significantly across major livestock regions by 2050

Welfare Considerations

Heat stress causes immediate suffering including panting, reduced activity, and altered physiology, as well as longer-term immune suppression and reproductive failure. The welfare burden of heat stress will grow substantially with climate change, making adaptation investment urgent. Cooling infrastructure including shade structures, forced ventilation, and evaporative cooling systems provide proven welfare protection. Transitioning to more heat-tolerant breeds and reduced livestock density also reduces heat stress risk.

What You Can Do

Support farm adaptation funding programs that include welfare-centered heat stress mitigation
Advocate for minimum shade and cooling requirements in livestock welfare standards
Choose animal products from farms with documented heat stress management protocols
Support climate action that reduces the underlying temperature increases threatening livestock welfare