Using a protein suppliment mixed in with a mineral, what ratio scale do you go by. Does anyone just use soybean meal or do you purchase a protein suppliment from a feed store? I realize the condition of the cows, age and pregnancy will have a lot to do with it. I am speaking of the category of bred heifers, older bred cows and yearlings. Seems most of the cattle people in West Tennessee just keep doing it the only way, which is how they learned at the beginning. I can't find any info on this ratio. Is there a good site that I am overlooking with this info?