Although residues and waste fiber can be fed in many types of ruminant rations at low levels as a replacement for the forage, greater usage can probably be found in maintenance or wintering rations. A crop residue or waste material is no better than its available nutrient composition. How closely this nutrient composition will meet the requirement of animals determines how the material can be used and what supplemental feeds are required. The nutrient requirement of 1,100 lb. dry pregnancy mature cows in the middle third of pregnancy could be used as a basis for requirements for a maintenance or wintering ration for breeding stock.
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Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Kamstra, L. D., "Utilization of Crop Residues and Highly Lignified Waste Products in Wintering Rations for Beef Cows" (1976). South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1976. 12.