I just rescued Sadie-(mini) & took her to my BB where my 1/4 horse is. She has:a fractured leg that healed incorrectly. Every bone is sticking out--ribs-chest-legs-especially HIPS. Kept in a horse stall that she could not see out of.(If I can post a pic I will try.) I have a challenge on my hands. Owner was going to put her down- it's that bad. BUT, when I got her to my BB she can run in a funky way- she can roll. I need help to put on weight. She can now eat grass- had only bad hay & 1 scoop of average grain. I don't want to overload her on grass, would I do it at a little at a time??