Is there a difference in keeping boars compared to barrows and gilts?

There are certainly differences. A lot of research on EU-level has been carried out and practical information and knowledge is available.
Additionally, there are farmers who have built up intensive experience with housing and management of boars. Their best practices are available. It has great value to share these experiences and accumulated knowledge.
The European ambition Boars on the way provides this information via and various other activities such as presentations, information and discussion meetings and press trips.