# overview
As Resident Director of Research at Overton for the past 30 years, he has provided the fiscal, managerial and scientific guidance and support for outstanding multi-discipline research contributing to scientific discoveries and technology development to support Texas agriculture in the areas of horticulture, forages and beef cattle. In addition to duties at Overton, Dr. Long has completed numerous specific assignments for the Director's Office in several areas, e.g. strategic planning, beef cattle research, administrative issues, etc. Dr. Long conducted and published pioneer research in systems analysis of beef cattle production and the evaluation of selection alternatives and mating plans on the basis of total efficiency of production.  He has published estimates of heterosis and breed effects on economically important characters of beef cattle.  Dr. Long supervised and conducted a major research beef cattle crossbreeding project which yielded and published estimates of genetic parameters for beef cattle lifetime traits.  He also collaborated with several colleagues to develop a system-based decision aid model for the Texas Department of Criminal Justice Agriculture Division.

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Fecal Near Infrared Reflectance Spectroscopy

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30 Agricultural, Veterinary And Food Sciences

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16 Peace, Justice And Strong Institutions

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Texas A&M University - (College Station, Texas, United States)

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Louisiana State University - (Baton Rouge, Louisiana, United States)

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Maintenance requirements and energetic efficiency of cows of different breed types.

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Factors affecting the relationship between calving interval of cows and weaning weights of calves.

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CROSSBREEDING FOR BEEF-PRODUCTION - EXPERIMENTAL RESULTS

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ECONOMIC VALUE OF SIRE SELECTION IN A CHAROLAIS HERD

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Effect of prenatal transportation stress on DNA methylation in Brahman heifers

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SIRE EFFECTS AND RELATIONSHIPS AMONG BIRTH AND CARCASS CHARACTERS

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Systems Analysis of Sources of Genetic and Environmental Variation in Efficiency of Beef Production: Heterosis and Complementarity

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Estimating parameters of growth curves of bulls.

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Application of mathematical programming to evaluation of systems of beef cattle breeding

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Characterization of Cattle of a Five - Breed Diallel. IV. Slaughter and Carcass Characters of Serially Slaughtered Bulls

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Productive Longevity of First-Cross Cows Produced in a Five-Breed Diallel: II. Heterosis and General Combining Ability

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Simulating Winter Wheat Forage Production in the Southern United States Using a Forage Wheat Model

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Herbage allowance x yearling heifer phenotype interactions for the growth of Brahman-Hereford F1 first-calf females grazing humid pasture and semiarid rangeland.

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Heterosis and Management Effects in Postweaning Growth of Angus, Hereford and Reciprocal Cross Cattle

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Measurements at calving for straightbred and crossbred cows of diverse types.

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Investigating DSSAT: Bermudagrass Response to Nitrogen as Influenced by Soil and Climate

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Longissimus Thoracis Mitochondrial Capacities and Temperament of Stocker Calves are Related to Meat Quality at Harvest in Brahman but not in Angus Cattle.

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BIRTH AND GROWTH CHARACTERS OF EXOTIC SIRED CALVES

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Production characters of straightbred, F1 and F2 cows: birth and weaning characters of terminal-cross calves.

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Influence of monensin in the diet of temperate and tropically adapted cattle on the ruminal and fecal metabolome and microbiome

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Temperament and Age Impact Skeletal Muscle Mitochondrial Capacities in Angus Steers.

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Strategic Agribusiness Operation Realignment in the Texas Prison System

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ENERGY COSTS FOR MAINTENANCE AND GAIN IN BULLS

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President Oral Presentation Pick: Prenatal stress increases skeletal muscle mitochondria' volume density and function in yearling Brahman calves

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GROWTH-PATTERNS OF STRAIGHTBRED AND CROSSBRED HEIFERS

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Influence of calving season and stocking rate on birth weight and weaning weight of Simmental-sired calves from Brahman-Hereford F1 dams.

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Awardee Talk - Prenatal transportation stress alters physiology of suckling Brahman calves as mediated by changes in DNA methylation

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CALVING DIFFICULTY AND ECONOMIC-EFFECTS IN A CHAROLAIS HERD

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POST-INFLECTION GROWTH IN STRAIGHTBRED AND CROSSBRED CATTLE .2. RELATIONSHIPS AMONG WEIGHT, HEIGHT AND PUBERTAL CHARACTERS

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Relationships between Diet Quality and Serum Metabolic Indicators in Prenatally Stressed Growing Bos Indicus Heifers.

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CAUSAL COMPONENTS OF MATERNALLY INFLUENCED CHARACTERS

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Natural beef production and growth of Bonsmara steers stocked on rye and ryegrass pastures at humid and semiarid environments

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American Registry of Professional Animal Scientists

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Production characters of first-generation cows of a five-breed diallel: reproduction of young cows and preweaning performance of inter se calves.

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Heterosis and Management Effects in Carcass Characters of Angus, Hereford and Reciprocal Cross Cattle

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Lifetime Productivity of Straightbred and F Cows of a Five-Breed Diallel

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Growth and reproductive development in Brahman bulls fed diets containing gossypol.

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USE OF STOCK DOGS IN TEACHING ANIMAL BEHAVIOR

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Gonadotropin-releasing hormone-induced luteinizing hormone release in heifers: effect of nutrition during gestation.

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Effect of season and location on semen quality and serum concentrations of luteinizing hormone and testosterone in Brahman and Hereford bulls.

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Herbage allowance x yearling heifer phenotype interactions for preweaning calf growth on humid pasture and semiarid rangeland.

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INHERITANCE OF THE HORNED, SCURRED, AND POLLED CONDITION IN CATTLE

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Heterosis retention for birth and weaning characters of calves in the third generation of a five-breed diallel.

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GENOTYPE AND AGE EFFECTS ON CARCASS COMPOSITION

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Prenatal transportation stress alters genome-wide DNA methylation in suckling Brahman bull calves.

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Heterosis and Breed Effects in Preweaning Traits of Angus, Hereford and Reciprocal Cross Calves

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Prenatally Stressed Brahman Bulls Produced Embryos with Decreased Embryonic Development.

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GENOTYPE AND AGE EFFECTS ON SLAUGHTER CHARACTERS

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Behavior and Management of Domestic Animals

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North American Colleges and Teachers of Agriculture (NACTA)

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MATURING PATTERNS OF WHOLESALE CARCASS CUTS OF BULLS

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Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age.

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Pasture and Livestock Management Workshop for Novices: A New Curriculum for a New Clientele

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Characterization of Cattle of a Five Breed Diallel: I. Measures of Size, Condition and Growth in Bulls

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Multiple regression and principal components analysis of puberty and growth in cattle.

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Comparison of cattle of a five-breed diallel: size, growth, condition and pubertal characters of second-generation heifers.

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Comparison of Telomere Length in Leukocytes of Control and Prenatally Stressed Brahman Bull and Heifer Calves.

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Systems Analysis of Sources of Genetic and Environmental Variation in Efficiency of Beef Production: Mating Plans

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Efficiency of weight gain of serial slaughtered bulls of a five-breed diallel.

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ESTIMATION OF EMPTY BODY-WEIGHT IN CATTLE

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EFFECTS OF BREED AND HETEROSIS ON GROWTH AND PRODUCTION CHARACTERS OF CATTLE

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EFFECTS OF GENOTYPE AND AGE ON CARCASS COMPOSITION

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Systems Analysis of Sources of Genetic and Environmental Variation in Efficiency of Beef Production: Cow Size and Herd Management

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EFFECT OF SUCKLING MANIPULATION ON POSTPARTUM REPRODUCTION IN PRIMIPAROUS BRAHMAN-CROSS COWS

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Effects of physiological age on residual feed intake of growing heifers

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POST-INFLECTION GROWTH IN STRAIGHTBRED AND CROSSBRED CATTLE .1. HETEROSIS FOR WEIGHT, HEIGHT AND MATURING RATE

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Influence of prenatal transportation stress-induced differential DNA methylation on the physiological control of behavior and stress response in suckling Brahman bull calves.

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Effect of location and season on body and testicular growth in Brahman and Hereford bulls.

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Characterization of Cattle of a Five Breed Diallel. V. Breed and Heterosis Effects on Carcass Merit

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Characterization of cattle of a five-breed diallel. III. Puberty in bulls and heifers.

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Characterization of Cattle of a Five Breed Diallel: II. Measures of Size, Condition and Growth in Heifers

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Production characters of first generation cows of a five-breed diallel: reproduction of mature cows and preweaning performance of calves by two third-breed sires.

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Estimating the daily nutritive value of bermudagrass for grazing livestock

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American Registry of Professional Animal Scientists

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Characterization of relative growth of empty body and carcass components for bulls from a five-breed diallel.

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Corpus luteum function in the bovine: in vivo and in vitro evidence for both a seasonal and breedtype effect.

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Strategie Agribusiness Operation Realignment in the Texas Prison System

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16 Peace, Justice and Strong Institutions

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Genetic Variation among and within Herds of Angus and Hereford Cattle

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Skeletal Muscle Mitochondrial Capacities Are Impacted by Breed and Temperament in Young Angus and Brahman Steers

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HETEROSIS AND COMBINING ABILITY FOR FEMALE PUBERTY CHARACTERS

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Characterization of cattle of a five-breed diallel: VI. Fat deposition patterns of serially slaughtered bulls.

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Productive longevity of first-cross cows produced in a five-breed diallel: I. Reasons for removal.

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Stocker Growth on Rye and Ryegrass Pastures Affects Subsequent Feedlot Gains and Carcass Traits

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Modification of the summative equation to estimate daily total digestible nutrients for bermudagrass pasture.

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Forage availability x heifer phenotype interactions for Brahman-Hereford F1 yearling heifers grazing humid pasture and semiarid rangeland.

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Simulated Bermudagrass Production and Nitrate Leaching Affected by El Nino-Southern Oscillation, Soil, and Clipping Frequency

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Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves

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Effect of exogenous prolactin on peripheral luteinizing hormone levels in ovariectomized cows.

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Evaluation of Prenatal Transportation Stress on Humoral and Cell-Mediated Immunity After Modified-Live Viral BVDV Vaccination in Brahman Calves.

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Beef cattle physiologist joins AgriLife Research

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Talamantes Roque, Miguel Agustin. Fat distribution in bulls of different breeds and crosses.

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Chantong, Rawat (1983). Relationships among body size, pubertal characters and pelvic dimensions of heifers of a five-breed diallel. Master's Thesis.

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Baker, Jerome Frank (1979). Characterization of carcass traits of bulls in five cattle breeds and their diallel crosses. Master's Thesis.

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Nelsen, Terry C.. Heterosis for size and maturing rates in cattle.

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Doren, Philip Erich (1982). Factors affecting the relationship between calving interval of cows and weaning weights of calves. Master's Thesis.

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Snowder, Gary Douglas (1980). Predicting carcass cutability of Rambouillet rams using live or carcass measures. Master's Thesis.

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Hawariat, Girma Wolde. Alternative statistical models with emphasis on characterization of efficiency of weight gain of bulls from a modified five breed diallel. Doctoral Dissertation.

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Stewart, Terry Sanford. Characterization of puberty and growth near puberty in five cattle breeds and their diallel crosses.

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Richards, Mary Anne (1980). Characterization of cows of a five breed diallel: fertility and production characters through calf weaning. Master's Thesis.