Pig Weaning Age and Welfare Implications

The age at which piglets are weaned profoundly affects both piglet and sow welfare, with earlier weaning causing greater stress.

Key Facts

EU regulations require piglets to be weaned no earlier than 28 days in most circumstances
Conventional UK systems typically wean at 21-28 days
Natural weaning by wild boar occurs at approximately 13-17 weeks
Early-weaned piglets show more redirected oral behaviour and stereotypies than later-weaned pigs
Sows benefit from earlier weaning through faster return to oestrus but piglets suffer greater stress

Welfare Considerations

Weaning age represents a direct welfare trade-off between piglet and sow interests. Earlier weaning causes more acute stress for piglets including higher cortisol, greater cross-suckling behaviour and post-weaning diarrhoea, while delaying sow recovery. Later weaning reduces piglet stress and allows more natural development but extends production cycles economically. The science clearly shows welfare benefits of later weaning for piglets. Higher welfare systems that wean later accept the economic costs to achieve better welfare outcomes consistent with evidence on natural development timing.

What You Can Do

Support pig welfare certification schemes requiring minimum weaning ages above legal minimums
Advocate for gradual weaning protocols reducing the abruptness of the transition
Choose pork from farms with confirmed later weaning practices
Support research into cost-effective gradual weaning approaches for commercial pig systems