Electric fencing for pigs
Pigs can easily be contained with electric fencing, and it is the most common fencing used on large commercial pig farms, where the units are often only temporary and the pigs are part of a farm cropping rotation for the land.
...for more information refer to the electric fencing section for pigs.
Smaller field areas can also be electric fenced, or a low wire stock fence is sufficient, so long as it has substantial posts. An electric fence is often fitted with the stock fence to stop the pigs pushing against the stock fence.