Deer Minerals-1 mans "opinion" I have been in the ruminant nutrition world since 1991 and from the first day in my career i've always used the words rumen efficiency and terms like pH. Every animal in confinement and the wild has different dietary requirements for it's basic needs, as well as overall health. Free ranging animals have maintenance requirements and growth requirements. They change based on a myriad of factors. Where do they live? What is their age? What is their