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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1983

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Animal Model of Isolated Gonadotropin Deficiency: Hormonal Responses to LHRH Immunoneutralization, Bruce D. Schanbacher, Hugh F. English, Douglas Gross, Richard J. Santen, Michael F. Walker, and Richard E. Falvo

1982

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Beef Research Program Progress Report No. 1 (1982): Table of Contents

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Roman L. Hruska U.S. Mean Animal Research Center: Overview on Center

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Estimation of Retail Product of Carcass Beef, John D. Crouse

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Evaluation of Traits in the USDA Yield Grade Equation for Predicting Beef Carcass Cutability in Breed Groups Differing in Growth and Fattening Characteristics, John D. Crouse

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Relationship of Selected Beef Carcass Traits with Meat Palatability, John D. Crouse

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Chemical Composition of Carcasses from Hereford, Limousin, and Simmental Crossbred Battle as Related to Growth and Meat Palatability, John D. Crouse and Michael E. Dikeman

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Genetic Variation Among and Within Herds of Angus and Hereford Cattle, Larry V. Cundiff and Keith A. Gregory

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Effects of Heterosis in Hereford, Angus, and Shorthorn Rotational Crosses, Larry V. Cundiff, Keith E. Gregory, and Robert M. Koch

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Germ Plasm Evaluation Program- Progress Report No. 10, Larry V. Cundiff, Keith E. Gregory, Robert M. Koch, and Roman L. Hruska U.S. Meat Animal Research Center

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Characterization of Breeds Representing Diverse Biological Types: Postweaning Growth and Feed Efficiency, Larry V. Cundiff, Robert M. Koch, and Keith E. Gregory

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Decreasing the Postcalving Anestrous Period in Suckled Beef Heifers, Sherrill E. Echternkamp

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Blood Flow to the Uterus, Sherrill E. Echternkamp and Stephen P. Ford

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Effect of Breed and Postweaning Rate of Gain on Onset of Puberty and Productive Performance of Heifers, Calvin L. Ferrell

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Energy Utilization by Mature Cows, Calvin L. Ferrell and Thomas G. Jenkins

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Blood Flow and Nutrient Uptake of the Bovine Uterus and Fetus, Calvin L. Ferrell, Ronald L. Prior, Ronald K. Christenson, and Stephen P. Ford

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Characterization of Breeds Representing Diverse Biological Types: Postweaning Growth and Puberty of Females, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Characterization of Breeds Representing Diverse Biological Types: Preweaning Traits, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Heterosis and Breed Maternal and Transmitted Effects in Beef Cattle, Keith E. Gregory, Larry V. Cundiff, and Robert M. Koch

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Methane and Protein from Beef Cattle Manure, Andrew G. Hashimoto, Yud-Ren Chen, Vincent H. Varel, and Ronald L. Prior

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Sixteen Years of Selection for Weaning Weight, Final Weight, and Muscling Score in Hereford Cattle, Robert M. Koch, Larry V. Cundiff, and Keith E. Gregory

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Characterization of Breeds Representing Diverse Biological Types: Carcass and Meat Traits of Steers, Robert M. Koch, Larry V. Cundiff, Keith E. Gregory, and M. E. Dikeman

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Cooperative Project on the Weak Calf Syndrome, William G. Kvasnicka

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Sexual Aggressiveness in Beef Bulls, Donald D. Lunstra

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Testicular Development and Onset of Puberty in Beef Bulls, Donald D. Lunstra

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Effect of Pregnancy on Disease Resistance, Rita C. Manak

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Preliminary Observations on the Immune Status of Newborn Normal and Weak Calf Syndrome Calves, Rita C. Manak and William G. Kvasnicka

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Conception and Embryonic Development in the Beef Female, Ralph R. Maurer, Sherrill E. Echternkamp, and William F. Pope

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Elfazepam and Synovex-S Influences on Growth and Carcass Characteristics of Steers Fed Two Dietary Energy Levels, Ronald L. Prior, John D. Crouse, and Virden L. Harrison

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Lipid Synthesis in the Beef Animal, Ronald L. Prior and Stephen B. Smith

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Validation of a Direct Radioimmunoassay for Testosterone in Unextracted Serum from Five Species: Application to Study of the Hypothalamic-Pituitary-Gonadal Axis in Males, B. D. Schanbacher and M. J. D'Occhio

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Performance Characteristics of Feedlot Bulls and Steers Implanted with Estradiol-17β, Bruce D. Schanbacher and Ronald L. Prior

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The Effect of Varying Levels of Raw and Precooked Spent Fowl Muscle in the Manufacture of Restructured Steaks, S. C. Seideman, P. R. Durland, N. M. Quenzer, and C. W. Carlson

1981

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Effectiveness of Progeny Test Index Selection for Field Performance of Strain-Cross Layers. II. Predicted and Realized Responses, G. L. Bennett, G. E. Dickerson, and T. S. Kashyap

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Germ Plasm Evaluation Program- Progress Report No. 9, Larry V. Cundiff, Keith E. Gregory, Robert M. Koch, and Roman L. Hruska U.S. Meat Animal Research Center

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Effectiveness of Progeny Test Multiple-Trait Index Selection for Field Performance of Strain-Cross Layers. I. Estimated Responses, T. S. Kashyap, G. E. Dickerson, and G. L. Bennett

1980

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Inbreeding Effects on Layer Performance at Two Levels of Protein Intake, Alan Emsley, G. E. Dickerson, and R. S. Gowe

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Germ Plasm Evaluation Program- Progress Report No. 8, Roman L. Hruska U.S. Meat Animal Research Center

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Influence of Testicular Steroids on Thyrotropin Releasing Hormone-induced Prolactin Release in Mature Rams, Bruce D. Schanbacher

1979

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Germ Plasm Evaluation Program- Progress Report No. 7, Roman L.Hruska U.S. Meat Animal Research Center

1978

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Germ Plasm Evaluation Program- Progress Report No. 6, Roman L.Hruska U.S. Meat Animal Research Center

1977

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Germ Plasm EvaluationProgram- Progress Report No. 5, U.S. Meat Animal Research Center

1976

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Evaluating Germ Plasm for Beef Production, Cycle 1- Progress Report No. 3, U.S. Meat Animal Research Center

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Germ Plasm EvaluationProgram- Progress Report No. 4, U.S. Meat Animal Research Center

1975

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Germ Plasm Evaluation Program Report No. 2, U.S. Meat Animal Research Center

1974

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Germ Plasm Evaluation Program Report No. 1, U.S. Meat Animal Research Center