Animal Science, Department of



Date of this Version

January 1997


Published in 1997 Nebraska Beef Report. Published by The Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.


Table of Contents

Cow-Calf: Seasonal Changes in Protein Degradabilities of Sandhills Native Range and Subirrigated Meadow Diets and Application of a Metabolizable Protein System • First Limiting Nutrient of Native Range for Summer Calving Cows During the Breeding Season and Late Lactation • Rumen Degradable Protein Requirement of Gestating Summer Calving Beef Cows Grazing Dormant Native Sandhills Range • Supplemental Protein on Performance of Lactating Beef Heifers • Evaluation of Feather Meal for Cows Grazing Cornstalks • Effects of Supplementing High Levels of Cu, Co, Mn, and Zn after Calving on Productivity of Two-Year-Old Cows • Effects of Copper and Selenium Injections on Cow Productivity and Concentration of Copper in Liver Biopsy Samples • Effects of Sire EPD, Dam Traits and Calf Traits on Calving Difficulty and Subsequent Reproduction of Two-Yr-Old Heifers

Growing: Cornstalk Grazing in Protected and Unprotected Fields • Comparative Grazing of Corn and Soybean Residue • Grazing Corn Residues in Conventional and Ridge-Till Planting Systems • Continuous vs Rotational Stocking of Warm-season Grasses at Three Stocking Rates • Cover Crops in Crop/Livestock Production Systems • Effect of Crop Residue Grazing on Crop Production-Update of Research Activities

New Methods and Technology: Estimating In Situ Degradability of Protein in Forages • Ammonia (NPN) Utilization by Prevotella ruminicola is Affected by the Availability of Peptides • Mutants of Prevotella ruminicola Defective in Peptidase Activity Impact on Ammonia • Biochemical Characterization of a Peptidase Enzyme from the Ruminal Bacterium Prevotella ruminicola • Effect of Rumensin and Feed Intake Variation on Ruminal pH

Finishing: Evaluating Breakeven for Various Management Systems for Different Breed Types from Weaning to Slaughter • Forage Combinations for Summer and Fall Grazing • Synchronizing Micotil Treatment with Time of Sickness in Newly Received Calves • Digestibility of Dry-rolled Corn, Wet Corn Gluten Feed, and Alfalfa Hay in Receiving and Finishing Diets • Lysine Requirements for Feedlot Cattle • Effect of Dried Poultry Waste on Performance of Finishing Yearling Steers • Wet Corn Gluten Feed as a Source of Rumen Degradable Protein for Finishing Steers • Evaluation of Corn Bran and Corn Steep Liquor for Finishing Steers • A Bacterial Preservative for Ensiled High-Moisture Corn • A Low Roughage Diet Alternative for Finishing Cattle • Time of Feeding Influence on Cattle Exposed to Heat • Effects of Heat Exposure on Adapting Feedlot Cattle to Finishing Diets • Effects of Feeding Level and Diet Energy Density on Cattle Exposed to Heat • Composting of Feedlot Waste-Update of Research Activities