Animal Science, Department of


Date of this Version



2019 Nebraska Beef Cattle Report


Copyright © The Board Regents of the University of Nebraska.


May-calving dams were assigned to graze either sub-irrigated meadow or upland range with or without supplementation (1 lb/d 33% CP). Treatment began at approximately 160 d of gestation. Supplementation continued for 85 ± 2 d, while grazing system treatment continued for 116 ± 2 d. Steer progeny were backgrounded after weaning and then assigned to either a short or long yearling feedlot system. Dam supplementation tended to decrease marbling score within both feedlot systems. Short yearling steers had an increased percentage of carcasses grade USDA low Choice or greater if their dams grazed meadow in late gestation. Long yearling steers had increased carcass weight if their dams grazed meadow. Increased profitability of steer progeny carcasses may be realized if May-calving dams are allowed to graze meadow in late gestation.