One of my horses (Well, not mine he was under the care of family friends) has been left in a paddock for 2 years and nothing has been done with him. When I went to see him he was underweight and had no muscle at all. I quickly found a place for him but I will be restarting him to become a light trail horse. He is moving to my place the beginning of next week. We will be feeding him golden years which is a senior horse feed, but starting out with small amounts so we do not upset his stomach.
When restarting a horse in his condition, should I first pony him on trail rides so he gets used to the distance before putting a rider on him? It would give him a chance to build some muscle on him legs. Are there any suggestions when building muscle for being ridden or putting weight on him? My other horse is older and had gained a lot of weight on golden years once we increased it to the proper amount. Any feedback would be appreciated!