Cattle Heat Stress - Welfare and Production

Managing heat stress in dairy and beef cattle, covering cooling strategies, nutritional adjustment, and welfare monitoring.

Key Facts

Cattle experience heat stress when the temperature-humidity index (THI) exceeds 68, causing welfare and production losses
Heat stress reduces dairy cow dry matter intake by 10-20%, milk production by 10-25%, and increases lameness risk
Shade access reduces heat load significantly but is not provided in many UK outdoor systems during heat events
Cooling fans, sprinklers, and wetter TMR (total mixed ration) reduce heat stress severity in housed cattle
Climate change is increasing the frequency and duration of heat stress events in temperate UK agriculture

Welfare Considerations

This topic carries significant welfare implications. Evidence-based management and timely veterinary care can substantially improve outcomes for the animals involved.

What You Can Do

Consult your veterinarian or a specialist for guidance specific to your situation
Follow evidence-based management protocols and best practice guidelines
Monitor animals closely and intervene promptly when welfare concerns arise
Stay updated with current research, legislation, and industry standards
Share knowledge with others to improve welfare outcomes across the sector