Variation can be a major issue on large dairy herds in the Western US. Too much variation is definitely bad, leading to fluctuations in production and health disorders, claims reserach by W.K. Sanchez, Ph.D., J. Mikus, Ph.D., and W. C. Stone, DVM, Ph.D. Diamond V Technical Services and Field Research. This feature was taken from the proceedings of the High Plains Dairy Conference. A full link to the proceedings is provided below.