Heat stress is a growing welfare challenge for cattle as global temperatures rise. Its effects on productivity, health and subjective suffering make mitigation a pressing priority for the livestock industry.
Heat stress in cattle is a welfare concern of growing urgency as climate projections indicate expanding heat risk across major livestock-producing regions. From a welfare perspective, heat stress causes genuine suffering — panting, reduced activity, huddling for shade, and reduced feed intake are behavioural indicators of thermal discomfort. Physiologically, heat stress impairs immune function, reproductive performance and gut barrier integrity. The most effective interventions — shade, evaporative cooling systems, modified feeding times and access to cool water — are all achievable but require investment. Breed selection for heat-adapted cattle offers longer-term adaptation possibilities. The confluence of animal welfare concerns with productivity losses creates commercial incentives that may drive faster industry adoption than welfare arguments alone.