Farm Animal Welfare

Pig Weaning Age Welfare Evidence

Early weaning of piglets from sows causes significant stress and welfare problems, with evidence supporting later weaning ages for improved outcomes.

Key Facts

Commercial pig systems typically wean piglets at 21-28 days, far earlier than natural 12-16 weeks
EU law requires minimum 28 days weaning age
Early-weaned piglets show stereotypic belly-nosing behaviour indicating oral deprivation stress
Later-weaned piglets have better immune function and lower post-weaning diarrhoea rates
Sow welfare also suffers from continuous breeding cycles with short lactation periods

Welfare Considerations

Early weaning is one of the most welfare-compromising practices in pig production. Piglets separated from sows before natural weaning age show behavioural and physiological signs of acute distress. Belly-nosing - compulsive nose-rubbing on pen mates - is a well-documented welfare indicator of oral deprivation. The sow simultaneously experiences hormonal disruption and motivation to continue nursing that is thwarted by abrupt separation.

What You Can Do

Support pig welfare standards that require minimum 28-day weaning ages
Advocate for EU weaning age rules to be maintained in UK post-Brexit legislation
Choose pork from systems with longer lactation periods where available
Support research into optimal weaning age and transition management
Engage with retailers about their supplier weaning age requirements