2002 Nebraska Beef Cattle Report

Cow/Calf
Weaning Date for Spring Calving Cows Grazing Sandhills Range
Replacement Heifer Development for Spring and Summer Calving Herds
Urinary Allantoin as an Estimate of Microbial Protein Synthesis
Metabolizable Protein Requirements of Lactating Two-Year-Old Cows
Use of Sexed (Female) Sperm is Successful in Yearling Heifers
Estrous Synchronization Programs for Lactating Cows

Growing
Windrow Grazing and Baled-Hay Feeding Strategies for Wintering
Forage Quality and Animal Performance of Steers Grazing Smooth Bromegrass/Legume Pastures
Supplementing Yearling Summer-Grazing Cattle with Fat and Protein and Subsequent Feedlot P Subsequent Summer Forage Intake Following Winter Gain Restriction

Finishing
Longitudinal Patterns of Fecal Shedding of Escherichia coli O157:H7 by Feedlot Cattle
Implant Programs for Feedlot Heifers Using Synovex® Plus^TM,Revalor®-H, or Finaplix®-H with MGA
Summary of Implant Programs or Feedlot Heifers Using Synovex® Plus^TM or Finaplix®-H with MGA
Sorting Strategies in an Extensive Forage Utilization Beef Production System
A Simulated Economic Analysis of Altering Days on Feed and Marketing Cattle on Specific Value-Based Pricing Grids
Economic Analysis of Calf Versus Yearling Finishing
Phosphorus Requirement of Finishing Feedlot Calves
Liming Effects of Beef Cattle Feedlot Manure and Composted Manure
Effect of Sawdust or Acid Application to Pen Surfaces on Nitrogen Losses from Open-Dirt Feedlots
Corn Bran Level in Finishing Diets and N Losses from Open-Dirt Pens
Effect of Sprinkling on Heat Stressed Heifers
Effect of Altered Feeding and Sprinkling on Performance and Body Temperature of Steers Finished in the Summer
Effect of Fiber Level in Finishing Diets on Diet Digestibility and Corn Silage Impact on Bacterial Crude Protein Production
Crude Protein and Wet Corn Gluten Feed Levels for Steam Flaked Corn Finishing Diets
Type of Corn Bran and Corn Processing Method in Beef Finishing Diets
Effects of Rumensin Level During an Acidosis Challenge

Beef Products
The Effects of Marination and Cook Cycles on High and Low pH Beef Muscles
Factors Influencing Color Development in Beef
Using Lean Color and Marbling Score to Sort Beef Carcasses into Tenderness Groups
Use of Sodium Citrate to Enhance Tenderness and Palatability of Pre-rigor Beef Muscles
Oral Dosage from NutroCAL^TM (Calcium Propionate) to Enhance Beef Tenderness
Effect of Conjugated Linoleic Acid on Insulin Sensitivity
Influence on Body Fat of Linoleic Acid Isomers
Evaluation of Calcium Propionate as a Nutrient to Prevent Dark Cutting Beef

Acknowledgments

Appreciation is expressed to the following firms, associations or agencies who provided grant support for research in the beef cattle program.
Cargill Corn Milling, Blair, Neb. Elanco Animal Health, Indianapolis, Ind. Fort Dodge Animal Health, Overland Park, Kan. Kermin Industries, Inc., Des Moines, Iowa LB1206, Preharvest E. coli 0157:H7 Research, Lincoln, Neb. Lignotech, Rothschild, Wis. Monsanto, St. Louis, Mo. Moor Man's Feed Manufacturing, Quincy, Ill.		Nebraska Beef Council, Kearney, Neb. Nebraska Technology Development Corp., Lincoln, Neb. Novartis Seeds, Golden Valley, Minn. Nutrition Physiology Corp., Indianapolis, Ind. Performance Plus, Palmer, Neb. Soypass Royalty Funds, University of Nebraska, Lincoln, Neb. U.S. Poultry and Egg Assoc., Atlanta, Ga.
Appreciation is also expressed to the following firms who provided products or services.
Alta Genetics, Watertown, Wis. BASF Nutrition Research, Offenbach/Quiech, Germany Cargill Corn Miling, Blair, Neb. Elanco Animal Health, Indianapolis, Ind. Excel Corp., Schuyler, Neb. Fort Dodge Animal Health, Overland Park, Kan. Hi Gain Inc., Cozad, Neb. IBP Inc., Dakota City, Neb.		Intervet, Millsboro, Del. Iowa Limestone, Des Moines, Iowa Lignotech, Rothschild, Wis. Liquid Feed Commodities, Fremont, Neb. Mead Cattle Co., Mead, Neb. SEM Minerals, Quincy, Ill. XY, Inc., Ft. Collins, Colo.

Appreciation is also expressed to the following research technicians, unit managers, and crew involved in the research programs at our various locations.
Agricultural Research and Development Center, Ithaca			Animal Science Department, Lincoln
Jeff Bergman Mark Blackford Bob Broweleit Logan Dana Don McClure Allison Miller	Karl Moline Jeremy Mumm Ken Rezac Terry Kamphaus Doug Watson		Jeff Folmer Jeryl Hauptman Janet Hyde Tommi Jones Tim Loy Casey Macken	Clyde Naber Rosemarie Rosario Calvin Schrock Candice Toombs Casey Wilson Kim Whittet
Gudmundsen Sandhills Laboratory, Whitman			Panhandle Research and Extension Center, Scottsbluff
Andy Applegarth June Emerson Jackie Musgrave	John Nollette Chris Sayer Troy Smith		Nabor Guzman	Paul McMillen
West Central Research and Extension Center, North Platte			Dalbey-Halleck Farm
Tom Arensdorf Rex Davis	Tim Griffin Russell Sandberg		Mark Dragastin
Northeast Research and Extension Center, Norfolk
Wanda Cerkoney Bob Frerichs	Kevin Heithold Lee Johnson

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File MP79-A under: BEEF
Issued January 2002; 3,000 printed.

Electronic version issued February 2002
pubs@unl.edu

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Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Elbert C. Dickey, Director of Cooperative Extension, University of Nebraska, Institute of Agriculture and Natural Resources.

University of Nebraska Cooperative Extension educational programs abide with the non-discrimination policies of the University of Nebraska-Lincoln and the United States Department of Agriculture.