Livestock Heat Stress Climate Adaptation

Climate change is increasing heat stress in livestock, causing suffering and production losses. Adaptation strategies protect both animal welfare and farm viability.

Key Facts

Heat stress occurs when animals cannot dissipate body heat fast enough to maintain homeothermy
Dairy cows experience heat stress above 25 degrees C in moderate humidity, reducing milk production and reproductive efficiency
Heat-stressed animals show increased water intake, reduced feed intake, and behavioural changes including shade seeking
Cooling interventions including shade, fans, and water sprinklers significantly reduce heat stress and improve welfare
Genetic selection for heat tolerance is advancing as climate change makes this trait increasingly economically important
Future projections indicate that traditional farming areas in southern Europe will face increasingly severe summer heat stress conditions

Welfare Considerations

Livestock heat stress represents one of the clearest examples of climate change as an animal welfare issue. As temperatures increase, farm animals in intensive systems without adequate cooling face increasing periods of thermal discomfort that affects their physiology, immunity, and quality of life. Adaptation strategies including shade provision, cooling systems, and genetic selection are available but require investment and planning. Farms that adapt proactively will provide better welfare under future climate conditions; those that do not will expose animals to increasing suffering.

What You Can Do

Support farms investing in heat stress management infrastructure as a welfare-positive criterion
Advocate for heat stress management to be required in farm welfare standards
Learn about the physiological effects of heat stress on different farm animal species
Support research into heat-tolerant genetics and cooling technologies for livestock
Recognise climate change as a major animal welfare issue and support climate action accordingly