The legal requirements related to group-housing and mixing of sows can be found in Council Directives 98/58/EC on the protection of animals kept for farming purposes, and 2008/120/EC on minimum standards for the protection of pigs.
The requirements are structured around four focus areas for inspections:
- Mixing of unfamiliar animals
- Competition for resources
- Restrictive feeding
- Climatic and resting comfort
Listed below are requirements citing the literal text of the directives without being comprehensive. Moreover, there might be stricter national legislation in place. The review of group-housing and mixing of sows describes the requirements in more detail.