If you have a feed mill that you can get the stuff from, ask them about a ration that runs around 13% protein. That;s the simplist way to do it. We have a specific mixture that we get from the mill that was developed around 10 years ago for us by a nutritionalist, I don;t even remember what all is in besides those 3 things. I just call the mill once a year and have them deliver 3-5 tons of the stuff depending on how many claves we'll be pre-conditioning. After the calves are done it's the same mixture we use to toll the cows up for AI or working them. It has no molasses in it so it doesn;t go rancid or get all sticky when it sits around for a year.