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Optimizing corn use by finishing cattle through wet corn milling by-products and corn processing
Five finishing trials and an economic analysis were conducted to optimize corn use by feedlot cattle through corn processing and wet corn milling by-products. Data are available for feeding dry-rolled corn with by-products such as wet corn gluten feed (WCGF), steep liquor, corn bran, and germ meal to finishing cattle. However, limited data are available for feeding these by-products with more intensively processed corn. Our objectives were to determine the effects of by-products fed in finishing diets that contained corn that was processed more intensively than rolled corn, energy values of processed corn, and cost of processing. ^ Processing corn in finishing diets that contained 25% WCGF (DM basis) improved calculated net energy for gain estimates for fine-ground (5.1%), rolled high-moisture (10.3%), ground high-moisture (10.9%), and steam-flaked corn (15.4%) compared to dry-rolled corn. Feeding WCGF at levels of 10, 20, 25, 30, and 35% (DM basis) in steam-flaked corn based diets did not affect average daily gain or feed efficiency compared to 0% inclusion of WCGF. Wet corn gluten feed is mostly a combination of steep liquor and corn bran. Higher ratios of steep to bran in WCGF increased feed efficiency when by-products were fed at 25% of diet DM in steam-flaked corn based diets. Drying corn bran did not affect its energy value. Feeding by-products with more intensively processed corn appears to be a viable option in feeding finishing cattle. To determine if this is the case, cost of processing corn more intensively must be know. Corn processing costs were estimated to be between $0.81 and $1.58 per t for dry rolling, $3.07 and $4.71 per t for ensiling high-moisture, and $6.23 and $9.57 per t for steam-flaking corn. Using these estimated costs, feeding WCGF with intensively processed corn can have economic benefits. ^
Agriculture, Animal Culture and Nutrition
Macken, Casey N, "Optimizing corn use by finishing cattle through wet corn milling by-products and corn processing" (2003). ETD collection for University of Nebraska - Lincoln. AAI3116594.