Farmed Turkey Welfare: Heat Stress and Ventilation

Heat stress in farmed turkeys causes significant welfare harm and production losses, particularly as climate change increases the frequency of extreme temperature events.

Key Facts

Turkeys have a thermoneutral zone of approximately 15-25 degrees Celsius depending on age
Heavy commercial breeds are more susceptible to heat stress due to their large body mass
Heat stress causes panting, wing spreading, lethargy, feed refusal and in severe cases death
Ventilation rates must be managed dynamically as outdoor temperatures rise
Evaporative cooling systems can reduce building temperatures by 5-8 degrees Celsius
Drinker provision and water temperature management are critical during heat events
Mortality from heat stress can reach 1-2% of the flock in severe events
Selective breeding for leaner, less rapidly growing turkeys reduces heat stress susceptibility

Welfare Considerations

Heat stress in turkeys causes suffering across a spectrum from mild discomfort to fatal hyperthermia. The physiological strain of thermoregulation in hot conditions is compounded in commercial breeds by their large body mass. Welfare-conscious turkey production requires proactive ventilation management, contingency planning for heat events, and consideration of stocking density in relation to building cooling capacity. Climate change makes heat stress management an increasingly critical welfare issue.

What You Can Do

Support turkey welfare standards that include heat stress contingency requirements
Choose turkey products from certified schemes with demonstrated environmental standards
Advocate for mandatory recording and reporting of heat stress mortality on poultry farms
Support research into heat-tolerant turkey breeds that maintain welfare under warmer conditions
Reduce turkey consumption or shift to higher welfare sources, particularly for routine meals