Farmed Animals

Pig Nursing Behavior and Welfare

Natural nursing behavior in pigs involves complex sow-piglet interactions that are severely constrained in farrowing crate systems.

Key Facts

Natural sow-piglet nursing lasts until 10-17 weeks with gradual weaning
Commercial systems typically wean piglets at 3-4 weeks causing stress for both sow and piglets
Sows in loose farrowing systems can move away from piglets between nursing bouts
Nursing involves complex communication including grunting sequences that synchronize piglet suckling

Welfare Considerations

Nursing in pigs is a complex, mutually coordinated behavior requiring sow-piglet communication and movement. Farrowing crates prevent sows from initiating and terminating nursing, disrupting the natural communication sequence. Early weaning at 3-4 weeks — weeks before natural weaning — causes distress in both sow and piglets, with behavioral indicators of separation distress lasting days.

What You Can Do

Choose pork from loose farrowing systems where sows can move freely around piglets
Support legislation requiring loose farrowing as standard rather than exceptional practice
Ask pork brands about their suppliers weaning age and farrowing system standards
Support research into loose farrowing systems that minimize piglet crushing while allowing sow movement