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Wet Milling Corn . Corn Cleaned Steeping Steep water Wet corn Germ Grind Degerm Condensed Wash Oil Germ Corn bran Starch & Protein meal Ethanol Corn Corn gluten sweeteners meal Corn gluten feed . Components of corn
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Wet Milling Corn Corn Cleaned Steeping Steep water Wet corn Germ GrindDegerm Condensed Wash Oil Germ Corn bran Starch & Protein meal Ethanol Corn Corn gluten sweeteners meal Corn gluten feed
Components of corn Starch 61.0% Corn oil 3.8% Protein 8.0% Fiber 11.2% Moisture 16.0% Wet mill, lbs/bu Starch 31.5 Gluten feed 12.5 Gluten meal 2.5 Oil 1.6 Gluten feedGluten mealGerm meal Protein 21 60 20 Fat 2.5 2.5 2 Fiber 8 1 9.5
Dry Milling Corn Corn Ground Heated + Water Enzyme (Starch Dextrins Glucose) Fermentation Yeast enzyme (Sugar Ethanol) Stillage Ethanol Wet grains Centrifuge Distillation WDGS Solubles
Components of corn Starch 61.0% Corn oil 3.8% Protein 8.0% Fiber 11.2% Moisture 16.0% Dry mill Ethanol 2.7 gal Dry distill grains 18 lbs CO2 18 lbs Dist grains with solDist Sol Protein 27 29 Fat 11 9 Fiber 9 4
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David J. Schingoethe Dairy Science Department South Dakota State University
Corn Distillers Grains for Finishing Cattle • As protein source, 8 to 15% of ration DM • As an energy source, > 15% of ration DM May reduce acidosis because highly digestible fiber in place of starch • Wt gains & feed efficiency of cattle fed wet distillers grains usually better than with corn • Wt gains and feed efficiency of cattle fed dry distillers grains usually similar to corn • At 15 to 25% of ration DM, wet distillers grains has it greatest value Protein and energy in distillers grains have value • DM intake may be reduces when wet distillers grains fed @ > 30% of ration DM Probably feeding excess protein Feeding excess P P does not have value for finishing cattle fed corn
Corn Distillers Grains for Cattle Fed Roughages • Growing cattle – Cows – Calves • Energy, protein and P have value • Complements roughages • Less starch – No negative associative effects • Energy should be greater than corn • Feed to supply supplemental needs for protein and energy