Animal Science, Department of


Date of this Version



2016 Nebraska Beef Cattle Reports


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A pooled- analysis of UNL feedlot trials examined the impact of starch (corn grain) on cattle performance. Cattle age (calf- fed or yearling) affected DMI, ADG, and F:G, but not marbling score or fat depth. Intake, ADG, F:G, and fat depth were optimized with 50– 70% corn grain in the diet. Marbling was not maximized until the diet contained > 75% corn. Removing either all the corn or all the byproduct from diets did not maximize performance. Including a minimum of 20% byproduct and 20% corn in the diet is biologically advantageous, while the remaining 60% of the diet is flexible based on economics.

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