Dr. Bob Sager DVM PhD  Diplomat American Board of Veterinary Practitioners (Beef Cattle Practice)  AAVN  offers his experience in field investigation workups on bovine diagnostic health problems related to nutritional deficiencies or interactions, macro and micro-mineral interactions or deficiencies including feed or water antagonistic interferences, beef cattle health issues,  improving performance issues, nutritional data analysis, and other bovine health and production problems.