We will be getting two 8 week old Pygmy wethers later this month and I am a bit confused about feeding them. I have done a ton of research and have a lot of conflicting information. They will be allowed to graze our horse pasture and will be fed second cutting hay. I know they need free choice mineral available (not in block form) and will need some feed supplement when they can't graze. What kind of feed and mineral are recommended for wethers to reduce the chance of stones and maintain good health. I can order online, but the our go to store will be Tractor Supply. They will come vaccinated for cd&t before we get them. What else should we have on hand before they arrive? Thanks so much for any helpful advice.