Pig Positive Welfare Indicators: Beyond Absence of Suffering

The shift from welfare assessment focused solely on negative indicators to one that also measures positive welfare states represents a paradigm change in how pig welfare is evaluated and improved.

Key Facts

Traditional welfare assessment focuses on negative indicators including disease, injury, stereotypic behaviour and mortality
Positive welfare indicators for pigs include play frequency, tail posture, social affiliation and exploratory behaviour
Tail posture in pigs is a validated positive welfare indicator with ears-up curled tail associated with positive states
Research on optimism bias in pigs shows that those in good welfare judge ambiguous stimuli more positively
The Five Domains model explicitly includes positive experiences as a welfare domain requiring assessment and provision
Pig welfare assessment protocols are increasingly incorporating positive indicators alongside negative ones
Farmers who observe positive welfare indicators report improved awareness of animal experience and motivation to maintain high standards

Welfare Considerations

The incorporation of positive welfare assessment into pig farming represents a conceptual shift from welfare as disease prevention to welfare as genuine quality of life. A pig free from disease and injury in a barren cage is not experiencing good welfare — it is merely experiencing the absence of some negative states. Positive welfare requires that pigs have opportunities and resources enabling genuinely positive experiences including curiosity satisfaction, social bonding, play and exploratory success. Measurement of positive indicators alongside negative ones creates a complete welfare picture and identifies opportunities for improvement that negative indicator monitoring alone misses. This shift challenges farmers to ask not just whether animals are suffering but whether they are thriving.

What You Can Do

Support pig welfare certification schemes that include positive welfare indicators in their assessment frameworks
Advocate for positive welfare assessment to be included in national pig welfare monitoring programmes
Choose pork from farms that demonstrate investment in conditions enabling positive pig experiences
Share research on pig positive welfare assessment with farmers and welfare advocates to build understanding
Encourage agricultural policy makers to develop positive welfare outcome measures alongside current regulatory compliance indicators