Scientists at the Roman L. Hruska U.S. Meat Animal Research Center (USMARC) develop new technology in order to increase the efficiency of livestock production and benefit consumers. The USMARC was authorized by Congress on June 16, 1964, and development began in the spring of 1966 on 35,000 acres near Clay Center, Nebraska. Presently, research programs are using a female breeding population of 6,500 cattle of 18 breeds, 4,000 sheep of 10 breeds, and 700 swine litters per year. The USMARC is administered by the Agricultural Research Service (ARS) within the United States Department of Agriculture (USDA). On October 10, 1978, President Carter signed into law a bill which renamed the research facility after former Senator Roman L. Hruska of Nebraska.

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1995

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Report of the First Workshop on the Genetic Map of Bovine Chromosome 23, J. E. Beever, H. A. Lewin, W. Barendse, L. Andersson, S. M. Armitage, C. W. Beattie, B. M. Burns, S. K. Davis, S. M. Kappes, B. W. Kirkpatrick, R. Z. Ma, R. A. McGraw, R. T. Stone, and J. F. Taylor

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Germplasm Evaluation Program- Progress Report No. 14, Roman L. Hruska U.S. Meat Animal Research Center

1994

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Germ Plasm Evaluation Program- Progress Report No. 13, Larry V. Cundiff, Keith E. Gregory, T. L. Wheeler, Steven D. Shackelford, M. Koohmaraie, Harvey C. Freetly, and D.D. Lunstra

1993

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Beef Research Program Progress Report (1993) No. 4 (Part 1): Table of Contents

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Bovine Embryos from Bluetongue Infected Donors did not Transmit Virus to Susceptible Recipients, John A. Acree, Sherrill E. Echternkamp, Steve M. Kappes, Gary S. Ross, Albert J. Luedke, and James E. Pearson

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Is Fiber Digestion in the Rumen Reduced by Catabolite Repression?, Kevin L. Anderson and Vincent H. Varel

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Gene Mapping in Cattle, Craig W. Beattie, Roger T. Stone, Michael D. Bishop, Sara L. F. Sunden, John W. Keele, and Steven M. Kappes

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Comparisons of Bos indicus and Bos taurus Inheritance for Carcass Beef Characteristics and Meat Palatability, John D. Crouse, Larry V. Cundiff, Robert M. Koch, Mohammad Koohmaraie, and Steve C. Seideman

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Cycle V of the Germplasm Evaluation (GPE) Program in Beef Cattle, Larry V. Cundiff, Keith E. Gregory, and Robert M. Koch

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Characteristics of Diverse Breeds in Cycle IV of the Cattle Germplasm Evaluation Program, Larry V. Cundiff, R. M. Koch, Keith E. Gregory, John D. Crouse, and Michael E. Dikeman

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Genotype-environment Interactions for Reproduction and Maternal Performance of Bos indicus and Bos taurus Crosses in Nebraska and Florida, Larry V. Cundiff, Timothy A. Olsen, K. Euclides Filho, M. Kroger, W. T. Butts, and Keith E. Gregory

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Improving the Microbiological Quality of Meat, James S. Dickson and Gregory R. Siragusa

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Predicting the Growth of Salmonellae on Beef, James S. Dickson, Gregory R. Siragusa, and James E. Wray Jr.

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Can Cattle Be Litter Bearing? Uterine Capacity in Cattle., Sherrill E. Echternkamp

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Identification of Twin Pregnancies in Cattle by Ultrasonography, Sherrill E. Echternkamp and Keith E. Gregory

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Hormone Profiles in Cattle Selected for Twin Ovulations and Births, Sherrill E. Echternkamp, Leon J. Spicer, and Keith E. Gregory

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Factors Influencing Fetal Growth and Birth Weight in Cattle, Calvin L. Ferrell

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Follicular Hormonal Changes and Oocyte Quality in Heifers That Exhibited an LH Surge, no LH Surge, or in Which the LH Surge Was Suppressed With Progestin, Calvin L. Ferrell and Thomas G. Jenkins

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Energy Expenditures of Mature Cows During the Production Cycle, Calvin L. Ferrell and Tom G. Jenkins

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Biological Efficiency Differences Among Bos taurus x Bos taurus and Bos indicus x Bos taurus F1-Cross Cows, Ronnie D. Green, Larry V. Cundiff, Gordon E. Dickerson, and Thomas G. Jenkins

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Estimates of Genetic and Phenotypic Parameters of Pelvic Measures, Weight, Height, Calf Birth Weight, and Dystocia in Beef Cattle, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Use of Crossbreeding and Breed Differences to Meet Specific Targets for Production and Carcass Traits of Beef Cattle, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Differences Among Parental Breeds in Germplasm UtilizationProject, Keith E. Gregory, Larry V. Cundiff, Robert M. Koch, and Donald D. Lunstra

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Germplasm Utilization in Beef Cattle, Keith E. Gregory, Larry V. Cundiff, Robert M. Koch, and Donald D. Lunstra

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Twinning in Cattle, Keith E. Gregory, Sherrill E. Echternkamp, L. Dale Van Vleck, and Larry V. Cundiff

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Contributions of Ovum Cytoplasm and Uterine Environment and Postnatal Environment to Maternal Effects in Beef Cattle, Keith E. Gregory and Ralph R. Maurer

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Characterizing Stress in Feeder Cattle, G. LeRoy Hahn and John A. Nienaber

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Beef Facilities and Management at MARC, W. Gordon Hays and Gary S. Ross

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Mortality and Cold Tolerance of Calves with Different Ratios of Bos indicus to Bos taurus Inheritance, Maurie J. Josey, Larry V. Cundiff, Robert M. Koch, Keith E. Gregory, and G. LeRoy Hahn

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Feedlot and Carcass Characteristics of Heifers: Effect of Ovariectomy and Ovariectomy with Ovarian Autograft, John M. Klindt and John D. Crouse

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Effect of Marbling on Variation and Change in Beef Tenderness In Bos Taurus and Bos Indicus Crosses, Robert M. Koch, John D. Crouse, Michael E. Dikeman, Larry V. Cundiff, and Keith E. Gregory

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Acceleration of Postmortem Tenderization In Brahman-Cross Beef Carcasses by Calcium Chloride, Mohammad Koohmaraie, Georgianna Whipple, and John D. Crouse

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Omasal and Duodenal Nutrient Flow in Steers., Kelly K. Kreikemeier, Gary P. Rupp, and Louis J. Perino

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Roman L. Hruska U.S. Meat Animal Research Center (1993): Overview, D. B. Laster

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Scrotal Thermography as a Tool for Predicting Semen Quality and Natural-Mating Fertility in Young Beef Bulls, Donald D. Lunstra and Glenn H. Coulter

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Puberty Occurs at the Same Testis Size in Both Bos taurus and Bos indicus Crossbred Beef Bulls, Donald D. Lunstra, John D. Crouse, and Larry V. Cundiff

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Immunization Against Inhibin Increases Sperm Production in Young Beef Bulls, Donald D. Lunstra, Terry L. Martin, Gary L. Williams, and James J. Ireland

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Heat and Moisture Production and Dissipation in Beef Cattle, John A. Nienaber, G. LeRoy Hahn, and Anders Ehrlemark

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Superovulation of Cows by Initiating FSH Treatments During the First Few Days After Estrus, Andrew J. Roberts and Sherrill E. Echternkamp

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Factors Involved in Regulating the Development of Ovarian Follicles in Cattle, Andrew J. Roberts, Sherrill E. Echternkamp, Judith M. Grizzle, and Thomas H. Wise

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The Relationship of Metabolic Hormones, Nutrition, and Postpartum Anestrus In Different Biological Types of Cattle, Andrew J. Roberts, Russell A. Nugent III, Thomas G. Jenkins, and John M. Klindt

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Use of Calcium Alginate to Immobilize Antimicrobial Agents on Beef Tissue, Gregory R. Siragusa and James S. Dickson

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Genes of the Major Histocompatibility Complex in Cattle, Roger T. Stone and Noelle E. Muggli-Cockett

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Fiber Degrading Microorganisms from Bison, Cattle-Bison Hybrids and Cattle., Vincent H. Varel and Burk A. Dehority

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Effect of Marbling Degree on Palatability and Caloric Content of Beef, Tommy L. Wheeler, Larry V. Cundiff, and Robert M. Koch

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Effects of a β-Agonist on Muscle Protein Degradation, Enzyme Activity, and Meat Tenderness in Steers, Tommy L. Wheeler and Mohammad Koohmaraie

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A Calcium Chloride Injection Process to Produce Guaranteed Tender and Calcium Fortified Meat, Tommy L. Wheeler, Mohammad Koohmaraie, and John D. Crouse

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Effect of Castration on Skeletal Muscle Protein Turnover and Muscle Enzyme Activities in Cattle, Tommy L. Wheeler, J. Brad Morgan, Mohammad Koohmaraie, John D. Crouse, and Jeff W. Savell

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Meat Tenderness and the Calpain Enzyme System in Young Bulls and Steers, Tommy L. Wheeler, J. Brad Morgan, Mohammad Koohmaraie, Jeff W. Savell, and John D. Crouse

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The Effectiveness of Subjecting Bos indicus Crossbred Beef Carcasses to Higher Temperatures to Improve Tenderness, Georgianna Whipple, Mohammad Koohmaraie, Michael E. Dikeman, and John D. Crouse

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Bos indicus Breeding Effects on Muscle Characteristics and Their Relationship With Meat Tenderness, Georgianna Whipple, Mohammad Koohmaraie, Michael E. Dikeman, John D. Crouse, and Melvin C. Hunt

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Relationships of Thymic Peptides Thymosin α1 and β4 With Reproductive Status: Puberty and Estrus, Thomas H. Wise, Michael L. Day, James E. Kinder, and Ralph R. Maurer

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Effect of Method of Estrous Synchronization on Oocyte Quality and Follicular Insulin- Like Growth Factor (IGF-I), Thomas H. Wise and Ralph R. Murer

1990

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Germ Plasm Evaluation Program- Progress Report No. 12, Larry V. Cundiff, Robert M. Koch, Keith E. Gregory, John D. Crouse, and Michael E. Dikeman

1988

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Beef Research Program Progress Report No. 3 (1988): Table of Contents

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Effects of Dietary Energy Density on Carcass Composition and Beef Palatability Characteristics, Gary L. Bennett

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Breed and Heterosis Utilization in Rotational and Composite Crosses, Gary L. Bennett and Michael D. MacNeil

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Mating and Grazing Behavior of Low and High Serving Capacity Beef Bulls During Average and Heavy Mating Loads at Pasture, Garth W. Boyd, Donald D. Lunstra, and Larry R. Corah

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Serum Concentrations of Luteinizing Hormone, Testosterone, and Thyroid Hormones in Low and High Serving Capacity Beef Bulls, Garth W. Boyd, Donald D. Lunstra, Bruce D. Schanbacher, and Larry R. Corah

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A Voice-Input and Knowledge-Based Expert System for Grading Carcass Beef, Yud-Ren Chen

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Microbial Decontamination and Weight of Carcass Beef as Affected by Automated Washing Pressure and Length of Time of Spray, John D. Crouse, Maynard E. Anderson, and H. Donald Naumann

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The Effects of Rate of Change in Body Weight on Tissue Development and Meat Quality of Youthful Bulls, John D. Crouse, Chris R. Calkins, and Steven C. Seideman

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Yield Grades and Cutability of Carcass Beef With and Without Kidney and Pelvic Fat, John D. Crouse, Robert M. Koch, and Michael E. Dikeman

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Growth and Carcass Traits of Heifers as Affected by Hormonal Treatment, John D. Crouse, Bruce D. Schanbacher, H. Russell Cross, Steven C. Seideman, and Stephen B. Smith

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Germ Plasm Evaluation in Cattle, Larry D. Cundiff, Robert M. Koch, and Keith E. Gregory

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Inheritance of Vertical Fiber Hide Defect, Larry V. Cundiff, Matthew P. Dahms, Mary V. Hannigan, Alfred L. Everett, and Peter E. Buechler

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Breeding for Lean Beef (Germ Plasm Evaluation Program), Larry V. Cundiff, Michael E. Dikeman, R. M. Koch, John D. Crouse, and Keith E. Gregory

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Twinning and Efficiency of Beef Production, Gordon E. Dickerson, Pedro Guerra-Martinez, Gary Anderson, and Ronnie D. Green

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Fetal Development in Cows With Multiple Fetuses, Sherrill E. Echternkamp

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A Simple Method for Freezing Bovine Embryos, Sherrill E. Echternkamp and Donald Elliott

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More Lean, Less Fat With Clenbuterol, Joan H. Eisemann, Gerald B. Huntington, and Calvin L. Ferrell

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Influence of Biological Types on Energy Requirements, Calvin L. Ferrell and Thomas G. Jenkins

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Effect of Season and Relocation on Reproductive Competence in Brahman and Hereford Bulls, Robert W. Godfrey, Ronald D. Randel, Charles R. Long, Donald D. Lunstra, Thomas G. Jenkins, and James Berardinelli

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Germ Plasm Utilization in Beef Cattle, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Individual Heterosis Effects on Mature Size and Maternal Heterosis Effects on Preweaing Traits and Postweaning Growth and Carcass Traits, Keith E. Gregory, Delwyn D. Dearborn, Larry V. Cundiff, and Robert M. Koch

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Heterosis, Breed Maternal, and Breed Direct Effects in Red Poll and Hereford Cattle, Keith E. Gregory, Delwyn D. Dearborn, Donald D. Lunstra, Larry V. Cundiff, and Robert M. Koch

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Twinning in Cattle, Keith E. Gregory, Sherrill E. Echternkamp, Gordon E. Dickerson, Larry V. Cundiff, and Robert M. Koch

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Relationship of Visceral Components of Mature Cows as Related to Lactation Potential and Possible Effects on Productivity, Thomas G. Jenkins, Calvin L. Ferrell, and Larry V. Cundiff

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Influence of Genotype and Maternal Environment on Growth Hormone and Prolactin Secretion in Cattle, John Klindt and Ralph R. Maurer

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Bison, Hereford, and Brahman Growth and Carcass Characteristics, Robert M. Koch, John D. Crouse, and Steven C. Seideman

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Effect of Subcutaneous Fat Removal on Beef Tenderness, Mohammad Koohmaraie, Steven C. Seideman, and John D. Crouse

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Factors Associated with Tenderness of Three Beef Muscles, Mohammad Koohmaraie, Steven C. Seideman, and John D. Crouse

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Beef Facilities and Management at MARC, Margaret S. McAlhany, W. Gordon Hays, and Gary S. Ross

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Beef Ribeye Muscle Glycogen and Color Response as Affected by Dietary Regimen and Postmortem Electrical Stimulation in Young Bulls, Mark R. Miller, H. Russell Cross, Marietta J. Buyck, and John D. Crouse

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Inheritance of Active and Passive Immunity in Beef Calves, Noelle E. Muggli, Bill D. Hohenboken, Larry V. Cundiff, and Don E. Mattson

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Investigation of the Major Histocompatibility Complex in Cattle and Its Association with Economically Important Traits, Noelle E. Muggli, Michael J. Stear, and Roger T. Stone

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Relationship of Growth Hormone, Prolactin, and Thyrotropin Secretion to Individual and Progeny Performance of Hereford Bulls, Danny L. Ohlson, Robert M. Koch, John Klindt, and Steven L. Davis

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Roman L. Hruska U.S. Meat Animal Research Center: Overview, Robert R. Oltjen

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Zinc and Protein Levels in Finishing Diets of Medium-and Large-Frame Steers, Wilson G. Pond and Robert R. Oldjen

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Nutritional Value of Anaerobically Fermented Beef Cattle Wastes as a Feed Ingredient for Livestock, Ronald L. Prior, Andrew G. Hashimoto, and John D. Crouse

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Anabolic Steroids and Implants in Feedlot Steers, Bruce B. Schanbacher and John Brethour

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Demasculinization of Beef Bulls by LH Immunization, Bruce D. Schanbacher

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The Effect of Sex and Age on the Textural Properties and Mineral Content of Beef Steaks, Steven C. Seideman, H. Russell Cross, and John D. Crouse

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Use of Mechanical Tenderization to Increase the Tenderness of Bull Beef, Steven C. Seideman, H. Russell Cross, and John D. Crouse

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Current Concepts for Understanding Ovarian Follicular Growth and Function in Cattle, Leon J. Spicer and Sherrill E. Echternkamp

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Follicle and Oocyte Relationships During Superovulation in the Heifer, Thomas H. Wise and Ralph R. Maurer

1985

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Beef Research Program Progress Report No. 2 (1985): Table of Contents

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Roman L. Hruska U.S. Meat Animal Research Center: Overview

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Nutrient Absorption by Lambs and Beef Cattle Fed High Forage or High Concentrate Diets, Robert A. Britton, Gerald B. Huntington, and Ronald L. Prior

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Sex, Age, and Breed Related Changes in Bovine Testosterone and Intramuscular Collagen, H. Russell Cross, Bruce D. Schanbacher, and John D. Crouse