Gestation Stall Enrichment for Pregnant Sows

Examining what enrichment is possible for sows in gestation stalls and the evidence for group housing alternatives.

Key Facts

Conventional gestation stalls confine sows individually, restricting turning and most natural behaviours throughout pregnancy
Over 60% of global sow housing remains in individual stalls despite growing welfare and legislative pressure
The EU phased out gestation stalls for most of pregnancy in 2013 — group housing is now required from 4 weeks post-service
Stereotypic bar-biting, sham chewing and rooting in stall-housed sows indicate chronic frustration and stress
Provision of rooting substrate (straw, rope) in stalls reduces stereotypy frequency even when movement is restricted
Group housing with adequate space and proper management virtually eliminates gestation-related stereotypies

Welfare Considerations

The gestation stall is one of the most welfare-compromised housing systems in commercial agriculture. Sows are highly motivated to explore, root and build nests — all behaviours completely prevented in stall housing. The result is measurable psychological suffering evidenced by stereotypies, elevated cortisol and impaired cognitive function compared to group-housed counterparts. Enrichment within stalls provides marginal benefit — it reduces expression of frustration without addressing its cause. Group housing with appropriate social management and adequate floor space per sow represents the standard that welfare science supports. Transition costs are real but one-time; welfare improvements are permanent.

What You Can Do

If operating gestation stalls, provide manipulable rooting materials as a minimum welfare improvement
Review group housing conversion options with an agricultural welfare consultant — many farmers report productivity maintenance post-conversion
Advocate to your supply chain buyers to support welfare-outcome-based purchasing that incentivises group housing
Choose pork products certified under welfare schemes that require group gestation housing
Support legislative efforts to extend gestation stall bans to jurisdictions where they do not yet apply
Follow AHDB and industry welfare improvement programmes that provide transition support to farmers