Another shoutout for Calf Manna
My first horse was an old gelding who wound up at a riding stable in Azusa Canyon in LA and was sold to us by the proprietor. I was 10 and my dad was a former farmboy. This horse was skin and bones but also a sweetheart. My dad took one look at him and said, "rolled oats and Calf Manna", the latter in the portion of one empty tomato paste can a day.
Within a year the horse was completely filled out, covered in dapples, and gorgeous. He had to be well over 20, but was my best bud for several years. He would have been a rescue candidate today, the shape he was in, and I credit the Calf Manna for turning him around.
My new mare is a little ribby because of her nervous nature - I'm going to add CM and see if it works on her too.