More than space: designing pig housing systems for the future

As South Africa's pig industry prepares for the transition away from gestation crates, producers will need to rethink far more than floor space. Research shows that the success of group housing depends on how housing design, feeding systems, ventilation, stocking density and day-to-day management work together to support both welfare and productivity.

-  Lindi Botha

The South African Pork Producers’ Organisation (SAPPO) welfare code revision marks a significant shift in how breeding herds will be housed in the future.

While the 2023 code permits sows to be housed in gestation crates for up to eight weeks, the revised 2025 code phases out crates entirely from 1 January 2032 and increases the minimum space allocation to 2,25m² per sow.

For many producers, the immediate implication is the need to provide more space. However, research conducted by the National Pork Board in the US suggests that successful group housing involves far more than meeting a minimum floor-space requirement.

According to the researchers, factors such as feeding systems, group size, pen design and animal management all influence how effectively sows utilise available space. More importantly, they determine whether the transition to group housing improves welfare and productivity or simply introduces new challenges.

This aligns closely with the realities already facing many South African producers. According to Cara Nel, monogastric development manager at Vitam International, environmental stress remains one of the most consistent drivers of reduced feed conversion in commercial pig systems.

“Housing design is one of the most important determinants of environmental stability, yet many production systems have not kept up with upgrades that take into account the needs of modern herds. Adequate insulation is a common issue, which impacts ventilation capacity, limiting temperature control and increasing environmental stress on pigs,” she says.

GROUP HOUSING IS ABOUT MORE THAN SQUARE METRES

One of the strongest conclusions from the US National Pork Board review is that additional floor space alone does not automatically create a successful group housing system.