Shows
Real Science ExchangeNutrient Requirements of Pre-Weaning Calves with Dr. Jim Drackley, Professor Emeritus, University of Illinois, Urbana-Champaign; Dr. Rick Lundquist, Nutrition Professionals Inc.; Dr. Tom Overton, Cornell UniversityDr. Drackley begins with an overview of his presentation at the 2025 Florida Ruminant Nutrition Symposium, focusing on the NASEM requirements for pre-weaned calves. He mentions some differences in energy and protein requirement calculations compared to the NRC system, as well as increased vitamin E recommendations and a more biologically based factorial approach to calculating mineral requirements. (5:59)Dr. Overton notes that milk replacements can be formulated differently to account for changes in mineral or vitamin requirements. In herds that feed whole milk, is there any reason to think about supplementing those calves? Dr. Drackley suggests that Mother Nature...2025-04-0842 min