combine came to clean out the barley field yesterday, I bagged and kept back 600 pounds and I will do the same in a couple of weeks with the wheat field, will have to buy the corn untill fall, so what else do I need and what protein do I shoot for when feeding multiple birds (layers, meaties, chicks, turkeys and eventually ducks)...not sure how to figure protein is there a list of what has what percentage of protein....would also like to use what i grow for scratch... I have mealworms I can add......we also grow soybeans but not sure if I can use them. and how far in advance can I mix this up without it going bad......I am not trying to get completely away from buying premixed food just trying to cut down on what I have to buy!! Any guidance would be appreciated....