For many dairies, use of premixes is nothing new and they have been used in some fashion since dairying began. In many cases, however, because the practice is so common, we may tend to forget these are tools in our feeding programs that need to be reevaluated from time to time.

We all use the term crude protein to describe nutritional value without much thought about it, as if crude protein were something that has been around forever, like pi or I Love Lucy.