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Beef Reports 2001

Breeding and Genetics


Genetic Relationship between Live Animal Ultrasound Measures and Scrotal Circumference in Yearling Angus Bulls

Doyle E. Wilson, Gene H. Rouse and Craig L. Hays

2002-01-01 Beef Reports 2001

Comparison of Sire Carcass EPD Rankings Using Real-time Ultrasound Measures from Yearling Angus Bulls Versus Using Measures from Developing Angus Heifers

Doyle E. Wilson, Gene H. Rouse and Craig L. Hays

2002-01-01 Beef Reports 2001

Preliminary Analysis of Data from the Iowa Beef Tenderness and Carcass Evaluation Project

J. A. Minick, D. E. Wilson and D. R. Strohbehn

2002-01-01 Beef Reports 2001

Carcass EPDs from Angus Heifer Real-time Ultrasound Scans

Doyle E. Wilson, Gene H. Rouse and Craig L. Hays

2002-01-01 Beef Reports 2001

Heritability and Correlation Estimates of Carcass Data from Angus-Sired Steers

Jennifer A. Minick, Doyle E. Wilson, M. E. Dikeman and E. J. Pollak

2002-01-01 Beef Reports 2001

Feedlot Nutrition and Nutrition Management


The Effects of Feeding a Live Microbial Product on Feedlot Performance and Carcass Value of Finishing Steers Fed Wet Corn Gluten Feed

Allen Trenkle

2002-01-01 Beef Reports 2001

Effects of Feeding Cobalt Dextro Lac (CDL) on Feedlot Performance and Carcass Value of Finishing Steers Fed Wet Corn Gluten Feed

Allen Trenkle

2002-01-01 Beef Reports 2001

Effects of Sorting Steer Calves on Feedlot Performance and Carcass Value

Allen Trenkle

2002-01-01 Beef Reports 2001

Effect of MGA on Performance, Sexual Behavior, Carcass Quality and Tenderness in Mixed-Sex Pens of Cattle

Darrell Busby, Dan Loy and Gene Rouse

2002-01-01 Beef Reports 2001

Soil Infiltration and Wetland Treatment of Feedlot Runoff

Jeffery Lorimor

2002-01-01 Beef Reports 2001

Financial Management


Live Cattle Futures and Options: How Have They Done?

John D. Lawrence

2002-01-01 Beef Reports 2001

Standardized Performance Analysis (SPA) Summary for 1999-2000 Veterinary Medicine Students

Suelee Robbe and Daryl Strohbehn

2002-01-01 Beef Reports 2001

Critical Control Points for Profitability in the Cow-Calf Enterprise

A. J. Miller, D. B. Faulkner, R. K. Knipe, D. F. Parrett, L. L. Berger and D. R. Strohbehn

2002-01-01 Beef Reports 2001

Financial Benchmarks for Beef Producers

Ralph Mayer

2002-01-01 Beef Reports 2001

Profiting from the Cattle Cycle: Alternative Cow Herd Investment Strategies

John D. Lawrence

2002-01-01 Beef Reports 2001

Forage Utilization and Beef Cow Nutrition


Effects of Corn Crop Residue Grazing on Soil Physical Properties and Subsequent Soybean Production in a Corn- Soybean Crop Rotation (A Progress Report)

Justin Clark, Jim Russell, Douglas Karlen, Darrell Busby, L. James Secor, Brian Peterson, Larry Pellack, Carroll Olsen and Shawn Shouse

2002-01-01 Beef Reports 2001

Sequential Grazing Systems for Beef Cattle Production

K. J. Moore, R. L. Hintz, M. H. Wiedenhoeft, E. C. Brummer and J. R. Russell

2002-01-01 Beef Reports 2001

Evaluation of Year-round Forage Management Systems for Spring- and Fall-Calving Beef Cows (A Progress Report)

N. A. Janovick, J. R. Russell, D. R. Strohbehn, D. G. Morrical, S. K. Barnhart, D. Maxwell and L. J. Secor

2002-01-01 Beef Reports 2001

Beef Cow Feeding Demonstration

H. Joseph Sellers and Dennis R. Maxwell

2002-01-01 Beef Reports 2001

Effects of Grazing Crop Residues of bt-Corn Hybrids on Performance of Pregnant Beef Cows

James R. Russell, Matthew J. Hersom, Mathew M. Haan, Marc Kruse, Philip M. Dixon, Daniel G. Morrical and Dale E. Farnham

2002-01-01 Beef Reports 2001

Growth and Development


Body Composition Changes of Angus Females from Initial Breeding through Second Parturition and Weaning Determined by Real-time Ultrasound

G. H. Rouse, D. E. Wilson and Abebe Hassen

2002-01-01 Beef Reports 2001

Ultrasound Prediction Model for % Intramuscular Fat in Beef Cattle

Doyle E. Wilson, Gene H. Rouse and Abebe Hassen

2002-01-01 Beef Reports 2001

Comparison of Ultrasound and Carcass Measures to Predict the Percentage of Lean Beef from Four Primal Cuts

Richard G. Tait, Gene H. Rouse, Doyle E. Wilson and Craig L. Hays

2002-01-01 Beef Reports 2001

Health Management


A Field Investigation of Tall Fescue Toxicosis in Beef Cattle in Southern Iowa

Steve Ensley and David Larson

2002-01-01 Beef Reports 2001

Investigation of the Potential Effects of Epizootic Hemorrhagic Disease Virus on Iowa Cattle

Steven D. Sorden, Perry A. Harms, Nolan Hartwig, Kevin Petersburg, Don J. Otto and John Schiltz

2002-01-01 Beef Reports 2001

Marketing


Trends Associated with Marbling Score, Fat Cover, and CAB (Certified Angus BeefTM) Acceptance Rate

Mark F. Scott, Doyle E. Wilson and Gene H. Rouse

2002-01-01 Beef Reports 2001

Experiences with Grid Marketing - Summary of Chariton Valley Beef Sales for Year 2000

H. Joseph Sellers and Diana Bodenstiener

2002-01-01 Beef Reports 2001

Iowa 4-H Beef Carcass Summary—1997–2000

Darrell Busby, Daryl Strohbehn and Mark Dikeman

2002-01-01 Beef Reports 2001

A Historical Review of the 4-H Beef of Merit Carcass Contest at the Iowa State Fair

Daryl Strohbehn

2002-01-01 Beef Reports 2001

Meat Science and Product Quality


The Effect on Meat Quality of Integrating Pasturing Systems into Cattle Finishing Programs

Tracy A. Williams and M. P. Hoffman

2002-01-01 Beef Reports 2001

Use of Vitamin D3 and its Metabolites to Improve Beef Tenderness

Monica R. Foote, Donald C. Beitz, Ronald L. Horst, Elisabeth J. Huff-Lonergan, Allen H. Trenkle and Frederick C. Parrish

2002-01-01 Beef Reports 2001

Conjugated Linoleic Acid (CLA) in Diets of Beef Steers Results in Higher Red Color Scores and Lower Lipid Oxidation of Irradiated Ground Beef Patties

B. R. Wiegand, K. Gassman, J. E. Swan, F. C. Parrish, A. H. Trenkle and S. T. Larsen

2002-01-01 Beef Reports 2001

Effects of Feeding Calcium Salts of Conjugated Linoleic Acid (CLA) to Finishing Steers

Kevin Gassman, F. C. Parrish, D. C. Beitz and Allen Trenkle

2002-01-01 Beef Reports 2001

Reproduction and Physiology


Relationship between Body Composition and Reproduction in Heifers

Jennifer A. Minick, Doyle E. Wilson, Gene H. Rouse, Abebe Hassen, Mel Pence, R. Sealock and Steven Hopkins

2002-01-01 Beef Reports 2001

Role of the Central Nervous System in the Regulation of Pregnancy, Parturition and Lactation in Beef Heifers

Lloyd L. Anderson

2002-01-01 Beef Reports 2001

Assessment of BoviPureTM for the In Vitro Production of Bovine Embryos

K. R. Sieren and C. R. Youngs

2002-01-01 Beef Reports 2001