Progress pics - Purina Strategy

Chief (sorrel) is 23, rarely ridden, and has been on 2x/day 2 quarts of Strategy for about 3 weeks. He needed some weight put on him just because he wasn't gaining on all-stock 2/day and green pasture, and winter is on the way.
Sonny (bay) is 4. He was fine on all-stock feed 1/day until the husband began roping and riding him in ranch rodeos 1-2 times a week. He lost quite a bit of weight in a few short months.
This is their condition at approximately 3 weeks into their feed being strictly Purina Strategy, with green bermuda grass forage.