Department of Animal Science


Date of this Version



2019 Nebraska Beef Cattle Report


Copyright © The Board Regents of the University of Nebraska.


The goal of producers and nutritionists is to meet the nutritional needs of their cattle. Requirements are well established, but the diets of grazing cattle are difficult to predict. Selection by the animal, sample handling, lab analysis, and relating the lab analysis to the animal are issues that have been researched the last 20 years. Based on that research, data have been compiled to predict the energy and protein values of grazed Sandhills range, meadows, smooth brome, and corn residue. Additionally, equations used by commercial labs to predict the TDN of grass hays based on ADF were compared to TDN estimates based on in vivo digestion. Predictions of TDN values from ADF varied in accuracy and need to be used with caution.