I have two Nigerian Dwarf goats, they are both wethers and are going to be 2 years old. They get grain once a day and hay 24/7. Their grain is a mix between the blue seal medicated and the caprine challenger, and their hay is 2nd cut. The boys are both on the chubby side, and I them to loose a little weight. I know everyone will say cut down their grain. I have cut their grain down, but the only problem is they dont eat hay that much. Even though they have it all the time, they don't eat that much daily. What else can I feed them to replace more of their grain with?