Pig Weaning Stress and Welfare | Animal Welfare Hub

Weaning is one of the most significant welfare challenges for piglets in commercial production, causing acute stress with lasting developmental effects.

Key Facts

Commercial pigs are typically weaned at 21-28 days, far earlier than the natural weaning age of 12-17 weeks
Weaning involves simultaneous removal from the sow, mixing with unfamiliar piglets, dietary transition, and new environment
Post-weaning diarrhoea is a leading cause of piglet mortality and morbidity, linked to gut microbiome disruption from early weaning
Weaning age is strongly correlated with welfare outcomes — even extending to 28 days from 21 improves welfare significantly
Enriched weaning environments with straw, familiarity with solid food before weaning, and gradual transitions reduce stress

Welfare Considerations

Early weaning creates a welfare catastrophe in miniature. Piglets experience the simultaneous loss of maternal warmth, social familiarity, and milk nutrition, combined with exposure to new animals, spaces, and diets. The resulting stress response involves prolonged vocalisation, weight loss, immune suppression, and gut dysfunction. Extending weaning age even modestly delivers measurable welfare benefits without compromising production efficiency significantly.

What You Can Do

Choose pork products from producers using extended weaning ages (28 days or longer)
Support regulatory campaigns to increase minimum legal weaning ages in commercial pig production
Advocate for farms to adopt gradual weaning transitions with maternal contact maintenance during the pre-weaning period
Support research into weaning management systems that reduce the concurrent stressors experienced by piglets