Keep packstock out of wet meadows. When choosing a campsite, look for pasture that will hold your stock without damaging the country. Dry grass meadows are best, preferably within sight of camp so you can keep an eye on your animals and put a quick stop to any damaging or dangerous behavior. Move stock frequently to minimize overgrazing. Portable electric fences are gaining favor as a way to corral packstock near camp.
Some units are solar powered, saving the weight and hassle of batteries.
Familiarize your animals with a fence before using it in the backcountry. And move it frequently to prevent overgrazing of any one spot. .