# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# overview
Dr. Riley teaches these 3 graduate courses:  Quantitative Genetics, Genetic Prediction, and Advanced Quantitative Genetics. Research efforts include the association of genes, gene combinations, and other molecular variants with beef cattle production traits, especially those traits related to reproduction and efficiency. Research interests include the incorporation of genomic information in traditional animal breeding strategies and prediction of breeding values using such information.  Other research efforts include the assessment and quantification of the epigenetic variation in livestock traits, and the expression of heterosis by crossbred animals for important traits.

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Single Nucleotide Polymorphism (snp) Chip

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Receptor, Platelet-derived Growth Factor Alpha

# keywords[]
Fanconi Anemia Complementation Group L Protein

# keywords[]
3201 Cardiovascular Medicine And Haematology

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# keywords[]
Insulin-like Growth Factor Binding Proteins

# keywords[]
Insulin-like Growth Factor Binding Protein 4

# keywords[]
Insulin-like Growth Factor Binding Protein 5

# keywords[]
Insulin-like Growth Factor Binding Protein 3

# keywords[]
Insulin-like Growth Factor Binding Protein 2

# educationAndTraining[].organization.label
Texas A&M University - (College Station, Texas, United States)

# educationAndTraining[].organization.label
Texas A&M University - (College Station, Texas, United States)

# educationAndTraining[].organization.label
Texas A&M University - (College Station, Texas, United States)

# publications[].label
Evaluation of the influence of prenatal transportation stress on GnRH-stimulated luteinizing hormone and testosterone secretion in sexually mature Brahman bulls.

# publications[].label
Alternative parameterizations of relatedness in whole genome association analysis of pre-weaning traits of Nelore-Angus calves.

# publications[].label
The role of ruminant animals in sustainable livestock intensification programs

# publications[].label
Genome wide association of beef flavor and tenderness in steaks (with electrical stimulation and without) from carcasses of Nellore-Bos taurus steers.

# publications[].label
The Potential Use of DNA Methylation Patterns from Peripheral Blood Leukocytes as a Surrogate for Stress Axis Tissues in Mature Brahman

# publications[].label
Genetic effects on carcass quantity, quality, and palatability traits in straightbred and crossbred Romosinuano steers.

# publications[].label
The effects of penalization of FAMACHA (c) scores of lambs treated for internal parasites on the estimation of genetic parameters and prediction of breeding values

# publications[].label
Heritability Estimations for Intramuscular Fat in Hereford Cattle Using Random Regressions.

# publications[].label
Genome-wide association study of temperament and tenderness using different Bayesian approaches in a Nellore-Angus crossbred population

# publications[].label
Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 2. Palatability

# publications[].label
Evaluation of tropically adapted straightbred and crossbred cattle: postweaning gain and feed efficiency when finished in a temperate climate.

# publications[].label
Distributional characterizations and testing for differences of relatedness and inbreeding of a subpopulation of American Hereford bulls.

# publications[].label
Use of random regression to estimate genetic parameters of temperament across an age continuum in a crossbred cattle population.

# publications[].label
304 Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves

# publications[].label
Comparison of Three Methods of Determining Feed Efficiency on Productivity of Brahman Heifers.

# publications[].label
Association of udder traits with single nucleotide polymorphisms in crossbred Bos indicus-Bos taurus cows.

# publications[].label
Influence of cow breed type, age and previous lactation status on cow height, calf growth, and patterns of body weight, condition, and blood metabolites for cows grazing bahiagrass pastures.

# publications[].label
Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age.

# publications[].label
Comparison of breeding value prediction for two traits in a Nellore-Angus crossbred population using different Bayesian modeling methodologies.

# publications[].label
Evaluation of the effect of prenatal transportation stress on endocrine and immune tissues of neonatal Brahman calves.

# publications[].label
Technical note: Evolution of exit velocity in suckling Brahman calves.

# publications[].label
Evaluation of Peripheral Blood Leukocytes as a Surrogate for RNA-Seq Detection of Gene Expression in Stress Axis Tissues of Mature Brahman

# publications[].label
Heritability of temperament at weaning in a crossbred cattle population.

# publications[].label
376 Awardee Talk - Prenatal transportation stress alters physiology of suckling Brahman calves as mediated by changes in DNA methylation

# publications[].label
Genome-wide association study for stayability measures in Nellore-Angus crossbred cows.

# publications[].label
Differences in evaluators and genetic parameter estimations using subjective measurements of beef cattle temperament

# publications[].label
Single nucleotide polymorphisms in the growth hormone-insulin-like growth factor axis in straightbred and crossbred Angus, Brahman, and Romosinuano heifers: population genetic analyses and association of genotypes with reproductive phenotypes.

# publications[].label
Impact of blood collection on scoring temperament in angus-based weaned calves is negligible.

# publications[].label
Effect of prenatal transportation stress on DNA methylation in Brahman heifers

# publications[].label
Crossbred steer temperament as yearlings and whole genome association of steer temperament as yearlings and calf temperament post-weaning.

# publications[].label
Genetic evaluation of aspects of temperament in Nellore-Angus calves.

# publications[].label
Random regression of Hereford percentage intramuscular fat on geographical coordinates.

# publications[].label
Black Hereford genetic parameters and predictions for calf traits with alternate modelling strategies.

# publications[].label
1 Comparison of Linear Mixed Model and Random Regression Model for Weaning Weight in Hereford Cattle over a United States Longitudinal Gradient.

# publications[].label
Analysis of Polycerate Mutants Reveals the Evolutionary Co-option of HOXD1 for Horn Patterning in Bovidae.

# publications[].label
Inter-Individual Variation in DNA Methylation Patterns across Two Tissues and Leukocytes in Mature Brahman Cattle.

# publications[].label
Single nucleotide polymorphisms associated with carcass traits in a population of Brahman and Brahman-influenced steers

# publications[].label
Analysis of nonsynonymous SNPs in candidate genes that influence bovine temperament and evaluation of their effect in Brahman cattle.

# publications[].label
Interaction of breed type and endophyte-infected tall fescue on milk production and quality in beef cattle

# publications[].label
Mapping genomic markers to closest feature using the R package Map2NCBI

# publications[].label
91 Assessing Variability of Herd Sire Economic Value for Commercial Operations

# publications[].label
Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves

# publications[].label
137 Prenatal transportation stress alters genome-wide DNA methylation in suckling Brahman bull calves.

# publications[].label
Evaluation of F1 cows sired by Brahman, Boran, and Tuli bulls for reproductive, maternal, and cow longevity traits.

# publications[].label
Evaluation of beef cattle temperament by eye temperature using infrared thermography technology

# publications[].label
Adiposity, lipogenesis, and fatty acid composition of subcutaneous and intramuscular adipose tissues of Brahman and Angus crossbred cattle.

# publications[].label
Age-related weights of second and third generation Nellore-Angus half-blood steers.

# publications[].label
Evaluation of a distinct white Angus crossbred phenotype in southern Florida

# publications[].label
0384 WS Influence of first calving date on stayability in Bos indicus crossbred cows

# publications[].label
Increased Effectiveness of Microbiological Verification by Concentration-Dependent Neutralization of Sanitizers Used in Poultry Slaughter and Fabrication Allowing Salmonella enterica Survival.

# publications[].label
Blood collection has negligible impact on scoring temperament in Angus-based weaned calves

# publications[].label
Cross-validation of genetic and genomic predictions of temperament in Nellore-Angus crossbreds

# publications[].label
Evaluation of tropically adapted straightbred and crossbred beef cattle: heifer age and size at first conception and characteristics of their first calves.

# publications[].label
Body condition of F-1 (Hereford x or Angus x Brahman) cows at weaning and effects on cow-calf performance and subsequent postpartum performance

# publications[].publisher
American Registry of Professional Animal Scientists

# publications[].label
Shedding and characterization of gastrointestinal nematodes of growing beef heifers in Central Texas.

# publications[].label
Assessment of Prenatal Transportation Stress and Sex on Gene Expression Within the Amygdala of Brahman Calves.

# publications[].label
2 Genetic Parameters for Lamb Mortality Associated with Pneumonia.

# publications[].label
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves

# publications[].label
Technical note: Digital quantification of eye pigmentation of cattle with white faces

# publications[].label
PSVIII-39 Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age

# publications[].label
Comparison of Telomere Length in Age-Matched Primiparous and Multiparous Brahman Cows.

# publications[].label
Feed efficiency of tropically adapted cattle when fed in winter or spring in a temperate location.

# publications[].label
Genetic characteristics of Korean Jeju Black cattle with high density SNP chips

# publications[].publisher
Asian Australasian Association of Animal Production Societies

# publications[].label
Longevity of Brahman, Angus, F-1 and F-2 Brahman-Angus cows.

# publications[].label
Evaluation of physiological and blood serum differences in heat-tolerant (Romosinuano) and heat-susceptible (Angus) Bos taurus cattle during controlled heat challenge

# publications[].label
Comparison of Linear Mixed Model and Random Regression Model for Weaning Weight in Hereford Cattle over a United States Longitudinal Gradient.

# publications[].label
Evaluation of tropically adapted straightbred and crossbred beef cattle: Cortisol concentration and measures of temperament at weaning and transport,,

# publications[].label
Comparative performance of Dorper and Rambouillet ewes on West Texas range

# publications[].label
Characterization of a region within bovine chromosome 6 associated with gray coat color in a Nellore-Angus cross.

# publications[].label
Evaluation of the Criollo breed Romosinuano as purebred and crossbred cows with Brahman and Angus in Florida: I. Reproduction and parturition.

# publications[].label
Genetic effects on acute phase protein response to the stresses of weaning and transportation in beef calves.

# publications[].label
30 Calf Performance and Sex Ratios in Second Generation Reciprocal Nellore-angus Crosses

# publications[].label
Identification of one polymorphism from the PAPP-A2 gene associated to fertility in Romosinuano beef heifers raised under a subtropical environment

# publications[].label
Evaluation of the influence of prenatal transportation stress on GnRH-stimulated luteinizing hormone and testosterone secretion in sexually mature Brahman bulls

# publications[].label
Evaluation of Growth-Based Predictions of Carcass Fat and Marbling at Slaughter Using Ultrasound Measurements 1

# publications[].publisher
American Registry of Professional Animal Scientists

# publications[].label
Prenatal transportation stress alters genome-wide DNA methylation in suckling Brahman bull calves.

# publications[].label
Cattle adapted to tropical and subtropical environments: genetic and reproductive considerations.

# publications[].label
Genetic evaluation of postweaning performance traits in Brahman and Brahman-influenced stockers grazing ryeryegrass or bermudagrass pastures

# publications[].publisher
American Registry of Professional Animal Scientists

# publications[].label
Differential Expression of Circadian Clock Genes in the Bovine Neuroendocrine Adrenal System.

# publications[].label
Deciphering cattle temperament measures derived from a four-platform standing scale using genetic factor analytic modeling

# publications[].label
Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 1. Carcass

# publications[].label
Genome association of carcass and palatability traits from Bos indicus-Bos taurus crossbred steers within electrical stimulation status and correspondence with steer temperament 3. Aroma and flavor attributes of cooked steaks

# publications[].label
Effects of breed type and sex on calf birth weight in reciprocal F2 Angus and Nellore Crosses.

# publications[].label
The influence of cow temperament on temperament and performance of offspring.

# publications[].label
Identification of regions of the bovine genome associated with gray coat color in a Nellore_Angus cross population.

# publications[].label
Polyceraty (multi-horns) in Damara sheep maps to ovine chromosome 2.

# publications[].label
Intramuscular fat and fatty acid composition of longissimus muscle from divergent pure breeds of cattle.

# publications[].label
Genetic parameters for FAMACHA score and related traits for host resistance/resilience and production at differing severities of worm challenge in a Merino flock in South Africa.

# publications[].label
Factors Affecting Antibody-Mediated Immune Response and Cellular-Mediated Immune Response in Weaned Brahman Calves

# publications[].label
Utilization of year-round data in the estimation of genetic parameters for internal parasite resistance traits in Dorper sheep

# publications[].label
Cellular and antibody mediated immune responses are influenced by sex and pregnancy status in mature Brahman cattle.

# publications[].label
Identification of a major locus interacting with MC1R and modifying black coat color in an F Nellore-Angus population.

# publications[].label
Whole genome association of SNP with newborn calf cannon bone length

# publications[].label
37 Genetic aspects of livestock adaptation

# publications[].label
Effect of prenatal transportation stress on DNA methylation in Brahman heifers

# publications[].label
The relationship of cell mediated immune response of Brahman cows on calving interval

# publications[].label
Novel genes involved in the genetic architecture of temperament in Brahman cattle.

# publications[].label
Differential Expression of Circadian Clock Genes in the Bovine Neuroendocrine Adrenal System

# publications[].label
Awardee Talk - Prenatal transportation stress alters physiology of suckling Brahman calves as mediated by changes in DNA methylation

# publications[].label
Effects of Fermented Soybean Meal Supplementation on Growth, Carcass Quality, and Intestinal Morphology in Ross 308 and Indian River Broilers.

# publications[].label
Genetic parameters of three methods of temperament evaluation of Brahman calves.

# publications[].label
Comparative transcriptome and histological analyses provide insights into the skin pigmentation in Minxian black fur sheep (Ovis aries).

# publications[].label
Genetic Parameters for Lamb Mortality Associated with Pneumonia.

# publications[].label
PSXIII-13 Comparison of telomere length in age-matched primiparous and multiparous Brahman cows

# publications[].label
Genetic effects for reproductive performance of straightbred and crossbred Romosinuano and Angus cows in a temperate zone

# publications[].label
Evaluation of hair coat shedding ability as an adaptive trait in Angus cattle in the southern US

# publications[].label
The influence of tropical adaptation on plasma concentrations of insulin-like growth factor-I in purebred and crossbred beef cattle.

# publications[].label
Genetic Variants and Their Putative Effects on microRNA-Seed Sites: Characterization of the 3' Untranslated Region of Genes Associated with Temperament.

# publications[].label
Fecal shedding of foodborne pathogens by Florida-born heifers and steers in U.S. beef production segments.

# publications[].label
Genetic evaluation of crossbred Bos indicus cow temperament at parturition.

# publications[].label
Effect of breed composition on phenotypic residual feed intake and growth in Angus, Brahman, and Angus × Brahman crossbred cattle

# publications[].label
Evaluation of the Criollo breed Romosinuano as purebred and crossbred cows with Brahman and Angus in Florida. II. Maternal influence on calf traits, cow weight, and measures of maternal efficiency.

# publications[].label
Review: Preweaning, Postweaning, and Carcass Trait Comparisons for Progeny Sired by Subtropically Adapted Beef Sire Breeds at Various US Locations123

# publications[].publisher
American Registry of Professional Animal Scientists

# publications[].label
Hot Carcass Weight and Longissimus Muscle Area in F-2 and F-3 Nellore-Angus Steers.

# publications[].label
Evaluation of Prenatal Transportation Stress on DNA Methylation (DNAm) and Gene Expression in the Hypothalamic-Pituitary-Adrenal (HPA) Axis Tissues of Mature Brahman Cows.

# publications[].label
SNP detection using RNA-sequences of candidate genes associated with puberty in cattle.

# publications[].label
145 President Oral Presentation Pick: Prenatal stress increases skeletal muscle mitochondrial volume density and function in yearling Brahman calves

# publications[].label
Evaluation of 2 sources of Angus cattle under South Florida subtropical conditions.

# publications[].label
Trigonometric functions representing annual winter coat shedding and regrowth in Angus cows

# publications[].label
Genetic assessment of rectal temperature and coat score in Brahman, Angus, and Romosinuano crossbred and straightbred cows and calves under subtropical summer conditions

# publications[].label
Evaluator effect on the prediction of genetic merit using subjective measures of beef cattle temperament

# publications[].label
Heterosis and direct effects for Charolais-sired calf weight and growth, cow weight and weight change, and ratios of cow and calf weights and weight changes across warm season lactation in Romosinuano, Angus, and F cows in Arkansas.

# publications[].label
Effects of steer breed composition on feedlot performance and carcass traits1

# publications[].publisher
American Registry of Professional Animal Scientists

# publications[].label
A SNP within the PMCH gene as a molecular marker associated with fertility traits in Angus and Brangus beef heifers raised under a desert environment.

# publications[].label
President Oral Presentation Pick: Prenatal stress increases skeletal muscle mitochondria' volume density and function in yearling Brahman calves

# publications[].label
Effect of growth hormone administration to mature miniature Brahman cattle treated with or without insulin on circulating concentrations of insulin-like growth factor-I and other metabolic hormones and metabolites.

# publications[].label
Water intake and factors affecting water intake of growing beef cattle

# publications[].label
PSVIII-40 Effect of prenatal transportation stress on DNA methylation in Brahman heifers

# publications[].label
303 Identification of candidate genes related to temperament in Brahman cattle

# publications[].label
Deciphering Cattle Temperament Measures Derived From a Four-Platform Standing Scale Using Genetic Factor Analytic Modeling.

# publications[].label
Evaluation of Prenatal Transportation Stress on the Number of Pituitary Corticotrophs in Mature Brahman Cows

# publications[].label
Characterization of intronic SNP located in candidate genes influencing cattle temperament

# publications[].label
Current state of enteric methane and the carbon footprint of beef and dairy cattle in the United States.

# publications[].tags
12 Responsible Consumption and Production

# publications[].label
138 Prenatal stress alters genes in signaling pathways influencing behavior and stress response by differential methylation of DNA.

# publications[].label
Evaluation of repeated exposure to lipopolysaccharide on vaginal temperature and complete blood count in two-year-old Brahman heifers.

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

# publications[].label
Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age

# publications[].label
Genome-wide association study for stayability measures in Nellore-Angus crossbred cows.

# publications[].label
Identification of candidate genes related to temperament in Brahman cattle

# researcherOn[].label
Effect of Prenatal Stress on DNA Methylation and Correspondence with Gene Expression in Cattle

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.preferredLabel
USDA-National Institute of Food And Agriculture

# researcherOn[].label
Genomic X Environmental Interactions Among Beef Cattle

# researcherOn[].awardedBy.label
Agricultural Research Service - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Integration of genomic information in beef production strategies

# researcherOn[].awardedBy.label
National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Health and Well-being of Beef Calves: Prenatal Stress Modulation of the Hypothalamic-Pituitary-Adrenal Axis and Telomere Length--

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.preferredLabel
USDA-National Institute of Food And Agriculture

# streetAddress
Texas A&M University; Animal Science; 2471 TAMU

# organizations[]
College of Agriculture and Life Sciences

# schools[]
College of Agriculture and Life Sciences

# etdChairOf[].label
Davis, Kaycee Marie (2013-12). Digital Analysis of Eye Pigmentation of Hereford, Hereford x Bos indicus or Hereford x Bos taurus Cattle. Master's Thesis.

# etdChairOf[].label
Holland, Paul W (2015-05). Identification of the Regions of the Bovine Genome Associated with Gray Coat Color in a Nellore-Angus Cross Population. Master's Thesis.

# etdChairOf[].label
Ngere, Lauretta (2015-05). Estimation of Genetic Parameters and Assessment of Genetic Variation for Internal Parasite Resistance Traits in Ruminants. Doctoral Dissertation.

# etdChairOf[].label
Obeidat, Mohammad Diya Talal Hamed (2013-08). Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Nellore-Angus Crossbred Cows. Doctoral Dissertation.

# etdChairOf[].label
Hulsman, Lauren Lorene (2013-08). Investigation of Genomic Estimated Breeding Values and Association Methodologies using Bayesian Inference in a Nellore-Angus Crossbred Population for Two Traits. Doctoral Dissertation.

# etdChairOf[].label
Boenig, Lydia (2011-12). Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Brahman x Hereford Crossbred Cows. Master's Thesis.

# etdChairOf[].label
Dillon, Jasmine Ashley (2013-12). Investigation of Genetic Effects on Birth Weight in Brahman-Simmental Crosses. Master's Thesis.

# etdChairOf[].label
Woolfolk, Matthew (2014-08). Estimation of Genetic Parameters for Post-Weaning Performance Traits in Brahman and Brahman-Influenced Stocker Cattle on Forage-Based Studies. Master's Thesis.

# etdChairOf[].label
Bohac, Jennifer Kay (2015-12). Heterosis for Reproductive and Maternal Traits in First and Second Generation Reciprocal Brahman-Angus Crosses. Master's Thesis.