Heat stress in poultry production is a growing welfare and productivity challenge as climate change increases the frequency and severity of high-temperature events in major production regions.
Broiler chickens experiencing heat stress endure physiological distress characterized by panting, reduced activity, and cardiovascular strain that can cause death in severe events. The rapid growth rates of commercial breeds increase metabolic heat generation, making these birds particularly susceptible. Climate adaptation in poultry production requires investment in cooling infrastructure, breed selection for heat tolerance, and contingency protocols for extreme temperature events. These welfare improvements are also economically important as heat stress reduces feed conversion and increases mortality.