Laboratory Animal Transport Stress and Welfare

The transport of laboratory animals between facilities causes significant acute stress and can compromise both animal welfare and research validity, yet remains poorly regulated in many contexts.

Key Facts

Millions of laboratory animals are transported between facilities and suppliers annually
Transport causes measurable increases in stress hormones in mice, rats, and primates
The recovery period needed after transport before animals reach physiological baseline can take weeks
Improper temperature control during transport can cause hypothermia or heat stress
Social disruption from regrouping after transport increases aggression and injury risk
International transport of primates involves lengthy journeys with multiple handling events
The three Rs framework requires minimizing transport stress as part of refinement

Welfare Considerations

Transport is a frequently overlooked source of welfare compromise in laboratory animals. Even brief road transport elevates corticosterone levels in rodents for days, potentially confounding experimental results while causing unnecessary suffering. Primate transport across international borders can involve journeys lasting 30-40 hours with multiple handling events. Research institutions often fail to account for transport-induced stress when designing experimental timelines, leading to results based on animals in non-baseline physiological states. Improving transport protocols benefits both animal welfare and research quality.

What You Can Do

Support policies requiring transport recovery periods before experimental procedures
Advocate for sourcing animals from local facilities to reduce transport distances
Encourage institutions to minimize unnecessary animal transfers between facilities
Support funding for in vitro and computational alternatives that eliminate transport needs
Promote transparency in laboratory animal transport welfare reporting
Ask research institutions about their transport welfare protocols and improvement plans