Purina WellSolve W/C Horse Feed offers sound strategies for eliminating unnecessary fat and calories from the diet while supporting health and contentment. If eliminating obesity were merely a matter of cutting calories, you could simply cut a horse’s rations in half and expect great results. But that’s not the case. On the contrary, as any horse owner can tell you, watching a horse go hungry is heartbreaking. In addition, starving a horse can set off a chain of events that harm more than help, i.e., loss of muscle mass, nutrient deficiencies, etc.