Effect of Corn Processing in Finishing Diets Containing Grain Milling Byproducts
نویسندگان
چکیده
Processing cereal grains generally increases starch digestion and improves feed efficiency and/or gain. However, the supply and cost effectiveness of using either wet corn gluten feed (WCGF) or wet distillers grains plus solubles (WDGS) is likely to increase in the future. Therefore, understanding how grain processing interacts with these byproducts will be critical for feedlots. Feeding wet byproducts improves performance compared to feeding dry byproducts, and the wet byproducts will likely be more commonly used and at greater inclusions compared to dry byproducts. When feeding WCGF, corn processing is more beneficial than in diets without WCGF. Cattle fed steam-flaked corn (SFC) were 14.6% more efficient than cattle fed dry-rolled corn (DRC) across three experiments. Cattle fed high-moisture corn (HMC) were 8.1% more efficient than cattle fed DRC in these experiments. These data suggest that processing corn as either HMC or SFC may be more beneficial in diets containing WCGF at 22 to 32% of diet DM. These data suggest that HMC and SFC are considerably better than DRC and even more so than in diets without WCGF. Interestingly, there does appear to be an interaction between corn processing and feeding WDGS. Unlike diets without WDGS, feeding DRC and HMC in combination with WDGS results in better performance than feeding SFC in combination with WDGS. However, performance differences are likely related to inclusion of WDGS. In one experiment evaluating 0, 15, 27.5, or 40% WDGS in diets based on either DRC, HMC, or SFC, the optimum inclusion was different between corn processing methods. We conclude that if diets are based on SFC, then the optimum inclusion of WDGS is likely 15 to 20% of diet DM. With diets comprised of DRC or HMC, the optimum inclusion of WDGS is 40% or 27.5 to 40%, respectively, for optimal gains and feed efficiency.
منابع مشابه
Feeding of Wet Corn Milling Byproducts to Beef Cattle
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