Livestock Heat Stress: A Growing Welfare Challenge

How rising global temperatures create increasingly severe heat stress welfare problems for farm animals worldwide.

Key Facts

Heat stress costs the US livestock industry over $2.4 billion annually in reduced production and animal death
Dairy cows begin experiencing heat stress at temperatures above 68 degrees Fahrenheit with high humidity
Heat stress causes significant suffering including panting, reduced feed intake, and metabolic disruption
Climate change is extending heat stress seasons and intensifying peak temperature events in livestock regions
Shade, ventilation, sprinkler cooling, and access to fresh water are key welfare interventions during heat events

Welfare Considerations

Livestock heat stress is simultaneously a production problem and a serious welfare crisis that is intensifying with climate change. Animals in intensive indoor systems without cooling infrastructure suffer acutely during heat events — panting, drooling, seeking shade that does not exist, and experiencing metabolic strain that can progress to heat stroke. Outdoor animals without adequate shade face similar risks. The welfare interventions are clear: shade, ventilation, fresh water, and cooling systems. Implementation requires both individual farm investment and regulatory minimum standards that mandate welfare-appropriate heat management across the industry.

What You Can Do

Support farms certified to welfare standards that require heat stress management protocols
Advocate for heat stress minimum standards to be incorporated into livestock welfare regulations
Reduce livestock product consumption during heat events as a signal of welfare-conscious purchasing
Support climate action policies that slow the warming increasing livestock heat stress severity