Animal welfare methodology and criteria

Area of Science:

• Veterinary Science
• Animal Behavior
• Animal Welfare Science

Background:

• The concepts of animal welfare and comfort are evolving in veterinary medicine.
• Historically, welfare was narrowly defined as the absence of pain, stress, and suffering, a view now considered imprecise.
• Quantifying pain and stress in animals has presented significant challenges.

Purpose of the Study:

• To explore the evolving concepts of animal welfare and comfort.
• To highlight the importance of subjective animal perception in stress responses.
• To establish objective and quantifiable methods for assessing animal welfare and suffering.

Main Methods:

• Examining the evolution of the stress concept since Hans Selye's work.
• Analyzing neurohormonal stress responses based on animal perception, not just stressor type.
• Studying species-specific behaviors and animal preferences as indicators of welfare.
• Investigating anomalies in behavior and expressed preferences under different husbandry conditions.

Main Results:

• Stress responses are influenced by an animal's perception of a situation, offering insight into their subjective experience.
• Animal suffering encompasses both physical and mental components.
• Species-specific behavior and preferences provide objective, quantifiable data for welfare assessment.

Conclusions:

• Animal welfare assessment requires understanding subjective perception and species-specific behaviors.
• Objective measures for animal welfare and suffering can be derived from behavioral studies and preference tests.
• Societal input is crucial in determining acceptable welfare standards based on scientific criteria.