Farmed Pig Group Housing: Making Social Complexity Work

Transitioning pigs from individual to group housing requires careful design and management, but well-implemented group systems deliver substantially better welfare than individual confinement.

Key Facts

EU law requires group housing for sows from 4 weeks post-mating; the UK follows equivalent standards
Group housing allows expression of natural social behaviour including investigation, play, and grooming
Key challenges include feeding competition, aggression at mixing, and management of lameness in groups
Electronic sow feeders (ESF) allow individual feeding in group housing, reducing competition at feeding
Providing adequate space (EU minimum 2.25 square metres per sow), separate lying and dunging areas, and enrichment reduces aggression
Pen design including visual barriers and one-way entry systems reduces fighting during mixing
Monitoring individual sow body condition in groups requires observation skills; electronic systems assist
Research consistently shows that group-housed sows show lower stress indicators than individually confined sows

Welfare Considerations

Group housing for sows, when properly implemented, provides welfare outcomes that individually confined sows cannot achieve - the ability to move freely, engage in social behaviour, and express a broader range of natural activities. The challenges of group housing are real but manageable through appropriate pen design, electronic feeding systems, and good stockpersonship. The transition from gestation crates to well-managed group housing requires investment and training but produces animals with measurably better welfare. Consumer demand for certified group-housing pork provides the market justification for this investment.

What You Can Do

Choose pork from producers certified under group housing standards for breeding sows
Support RSPCA Assured and equivalent schemes that require group sow housing
Advocate for enforcement of existing EU and UK group housing regulations
Donate to farm animal welfare organisations supporting the transition to group housing
Ask retailers about group housing compliance in their pork supply chains