Livestock Transport in High Temperatures: Preventing Heat Stress

Transporting livestock in hot conditions causes acute heat stress that kills thousands of animals annually and causes suffering in millions more, with improved regulations, journey time limits, and vehicle standards able to prevent most deaths.

Key Facts

Heat stress during transport kills an estimated 100,000+ pigs, cattle, and sheep annually in the EU
Animals are most vulnerable at temperatures above 25-30C combined with high humidity and poor ventilation
EU transport regulations require journey time limits, rest periods, and minimum ventilation standards
Enforcement of transport welfare regulations varies significantly between EU member states
Non-evaporative cooling (wetting animals) combined with ventilation is more effective than either alone
High vehicle stocking density reduces air circulation and dramatically worsens heat stress risk
Dark-colored vehicles absorb more heat than light-colored equivalents - a significant and often overlooked factor
Night transport during summer reduces heat exposure but creates other welfare trade-offs including disrupted rest

Welfare Considerations

Heat stress during transport causes progressive physiological deterioration: elevated body temperature, cardiovascular strain, respiratory distress, and in severe cases, heat stroke and death. The suffering experienced by animals in severely overloaded, poorly ventilated vehicles in high temperatures is acute and severe. Mortality is the visible tip of the welfare iceberg - many more animals arrive at slaughter in compromised states. Prevention requires a combination of journey time limits, temperature-triggered loading bans, improved vehicle design, reduced stocking densities, and consistent enforcement. The economic incentive to transport more animals faster creates systemic pressure against welfare.

What You Can Do

Support stronger EU and national transport welfare regulations with robust enforcement
Advocate for journey time limits that reflect actual welfare science rather than industry convenience
Choose animal products from farms with short supply chains and local slaughter options
Report suspected transport welfare violations to relevant authorities
Support research into improved transport vehicle design and animal cooling systems