Farm Animal Welfare

Pig Welfare and Immunity

Immune function and pig welfare are closely linked - welfare problems cause immune suppression while poor immunity leads to disease and further welfare suffering. Understanding this relationship guides holistic welfare management.

Key Facts

Stress hormones including cortisol directly suppress lymphocyte function in pigs
Pigs raised in enriched environments show better immune responses to vaccination
Maternal stress during pregnancy affects offspring immune development and welfare resilience
Gut microbiome composition influences systemic immune competence in growing pigs
Post-weaning immune suppression from multiple stressors creates a critical welfare-disease window

Welfare Considerations

The relationship between pig welfare and immune function creates virtuous or vicious cycles: good welfare maintains immune competence reducing disease, while disease causes further welfare suffering that further suppresses immunity. Breaking into this cycle through welfare improvement at critical vulnerable periods - particularly around weaning - delivers compounding welfare and health benefits throughout the production cycle.

What You Can Do

Support welfare interventions at critical welfare-immunity vulnerable periods
Advocate for weaning management standards that protect post-weaning immunity
Choose pork from farms with demonstrated low disease rates reflecting good welfare