In one corral I have 3 wethers...1 large Alpine and 2 smaller Nubians. In another corral I have 2 possibly pregnant ND does. How much hay and what type? The only thing they like is alfalfa. Grain? I have Purina grain because I need to feed sheep and goats. I don't have a scale, so it would be easier for me if suggestions were in the form of 1 flake, 2 flakes, etc. I measure my grain with the "green" scoop which I think is 2 cups. Thank you for any advice!