Horse safe high tension wire may be the best option for horse fencing because its affordable, strong, low maintenance and visible. the only maintenance needed is if the wire begins to loosen you can jack it tight again. It is easy to repair if a tree falls on it. No electric necessary but you have the option to add some juice for that extra security. add some electric to the top wire for horses, add some electric to the middle for cattle, add some juice to the bottom for small farm animals.
