Where are we heading? Challenges in evidence-based severity assessment

Area of Science:

• Animal research ethics
• Laboratory animal science
• Experimental design

Background:

• Evidence-based severity assessment is vital for ethical and reproducible animal research.
• Current methods face challenges in accurately measuring animal pain and distress.
• Standardized, valid data generation necessitates robust severity assessment protocols.

Purpose of the Study:

• To review the challenges and pitfalls in designing valid studies for animal severity assessment.
• To explore the development of a holistic concept for severity assessment.
• To advocate for the refinement principle in animal experimentation.

Main Methods:

• Literature review of existing methodologies for assessing animal pain and distress.
• Conceptual analysis of multifactorial composite scales for severity assessment.
• Discussion on the integration of robust parameters to measure multidimensional aspects of animal suffering.

Main Results:

• Identified numerous obstacles in achieving valid study designs for animal severity assessment.
• Proposed a holistic approach utilizing multifactorial composite scales.
• Highlighted the need for reliable parameters to capture the multidimensional nature of animal suffering.

Conclusions:

• Developing accurate, evidence-based severity assessment is essential for ethical and scientific integrity in animal research.
• Multifactorial composite scales offer a promising framework for comprehensive severity assessment.
• Implementing refined assessment strategies supports the ethical treatment and welfare of laboratory animals.