Sow Longevity and Welfare in Pig Farming

Breeding sows in intensive systems have short productive lives and experience chronic welfare challenges from housing, reproduction, and culling practices.

Key Facts

Commercial sows typically produce 5-6 litters before being culled - a lifespan of 3-4 years
Wild boars can live 10-14 years in appropriate conditions
The most common reasons for early culling include lameness, reproductive failure, and aggression
Gestation stalls restrict sow movement to a single step forward or backward
Group sow housing is required in the EU but lameness and aggression remain challenges
Hyperprolific sow genetics produce large litters but weaker piglets with higher mortality
Sow housing has a direct relationship with lameness rates - concrete flooring without bedding causes foot lesions
Sow welfare improvements require both housing reform and genetic selection for longevity

Welfare Considerations

Breeding sows in conventional systems experience repeated cycles of confinement, pregnancy, farrowing, and lactation with minimal opportunity for natural behavior. Lameness from concrete flooring affects a majority of sows in some systems and causes chronic pain with every step. Gestation stalls, still used in much of the world, prevent lying down comfortably, turning around, or social interaction. The short productive lifespan is a welfare indicator - sows culled at 3-4 years due to health breakdown represent a system that degrades their bodies faster than it maintains their welfare. Outdoor farrowing systems show dramatically better welfare outcomes.

What You Can Do

Choose pork certified by programs requiring group housing and enrichment for sows
Support legislation banning gestation stalls in sow housing
Advocate for retailers to commit to sourcing from higher welfare sow systems
Reduce pork consumption from conventional intensive sow operations
Support transition funds helping farmers move to higher welfare sow housing