My safe old pony isn't bothered about other livestock but I had an 'exciting' experience riding a track that was surrounded by pigs either side - the longest 5 minutes of my life - we got through okay but wouldn't fancy doing it near to main roads etc.
It is accepted that some horses have a probelm with pigs.
However if there is a problem with the pigs being close to the bridleway then the access department of your local county council can ask the owner of the adjacent land to the bridleway to keep the pigs well away from the bridleway. If the owner refuses to then the local District Council can use the environment act (as ammended) to compel the owner to do so. This act can also be used for dogs and various other nuisances such as stallions.
If you require any further asistance then please do not hesiatet to e-mail me on peter.natt@btinternet.com
You have got every right to use and enjoy the bridleway in safety. I bet that the bridleway was there before the field was bought by the present owners or the pigs where put on it. Land ownership also has it's responsibilities and I am sure that if the owners have any sense of resposibility they will keep the pigs fenced well away from the bridleway.
I rode the bridelway again this morning. The new owners of the land were there again, and I stopped to chat. They are now going to put the pigs on the farthest edge of the 2 acre plot - so no longer right next to the bridleway. It's a huge relief, and I told them how grateful I was for them re-considering.
After our discussions last week, they said that they too had realised that there was a real safety risk due to the position of the road.