HR job title
- Professor
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- 1 979 845 2616
Riley, David Professor
Positions
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.
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Overview
Publications
selected publications
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academic article
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Ruiz-De-La-Cruz, G., Sifuentes-Rincn, A. M., Paredes-Snchez, F. A., Parra-Bracamonte, G. M., Casas, E., Riley, D. G., ... Randel, R. D.
(2024).
Analysis of nonsynonymous SNPs in candidate genes that influence bovine temperament and evaluation of their effect in Brahman cattle. Molecular Biology Reports.
51(1), 285.
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Earnhardt-San, A. L., Baker, E. C., Riley, D. G., Ghaffari, N., Long, C. R., Cardoso, R. C., Randel, R. D., & Welsh, T. H.
(2023).
Differential Expression of Circadian Clock Genes in the Bovine Neuroendocrine Adrenal System. Genes.
14(11), 2082-2082.
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Zhang, N., Baker, E. C., Welsh, T. H., & Riley, D. G.
(2023).
Telomere Dynamics in Livestock. Biology.
12(11), 1389-1389.
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Ruiz-De-La-Cruz, G., Sifuentes-Rincon, A. M., Paredes-Sanchez, F. A., Parra-Bracamonte, G. M., Casas, E., Welsh Jr, T. H., ... Randel, R. D.
(2023).
Characterization of intronic SNP located in candidate genes influencing cattle temperament. Revista Brasileira de Zootecnia.
52.
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Ruiz-De-La-Cruz, G., Sifuentes-Rincn, A. M., Casas, E., Paredes-Snchez, F. A., Parra-Bracamonte, G. M., Riley, D. G., ... Randel, R. D.
(2023).
Genetic Variants and Their Putative Effects on microRNA-Seed Sites: Characterization of the 3' Untranslated Region of Genes Associated with Temperament. Genes.
14(5), 1004-1004.
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Alam, M. Z., Lee, Y., Son, H., Hanna, L. H., Riley, D. G., Mannen, H., ... Kim, J.
(2021).
Genetic characteristics of Korean Jeju Black cattle with high density SNP chips. Asian-Australasian Journal of Animal Sciences.
34(5), 789-800.
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Mickey, D., Sanders, J., Riley, D. G., & Herring, A. D.
(2021).
30 Calf Performance and Sex Ratios in Second Generation Reciprocal Nellore-angus Crosses. Journal of Animal Science.
99(Supplement_3), 14-15.
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Dodd, L., Anderson, D., Riley, D. G., Johnson, B., & Herring, A. D.
(2021).
91 Assessing Variability of Herd Sire Economic Value for Commercial Operations. Journal of Animal Science.
99(Supplement_3), 46-47.
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Angulo-Valenzuela, N. I., Thomas, M. G., Riley, D. G., Medrano, J. F., Reyna-Granados, J. R., Aguilar-Trejo, C. M., & Luna-Nevrez, P.
(2021).
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. Tropical Animal Health and Production.
53(3), 355.
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Allais-Bonnet, A., Hintermann, A., Deloche, M., Cornette, R., Bardou, P., Naval-Sanchez, M., ... Capitan, A.
(2021).
Analysis of Polycerate Mutants Reveals the Evolutionary Co-option of HOXD1 for Horn Patterning in Bovidae. Molecular Biology and Evolution (MBE).
38(6), 2260-2272.
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Dillon, J. A., Stackhouse-Lawson, K. R., Thoma, G. J., Gunter, S. A., Rotz, C. A., Kebreab, E., ... Mueller, N. D.
(2021).
Current state of enteric methane and the carbon footprint of beef and dairy cattle in the United States. Animal Frontiers.
11(4), 57-68.
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Chen, X., Ogdahl, W., Hanna, L., Dahlen, C. R., Riley, D. G., Wagner, S. A., Berg, E. P., & Sun, X.
(2021).
Evaluation of beef cattle temperament by eye temperature using infrared thermography technology. Computers and Electronics in Agriculture.
188, 106321-106321.
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Shi, X., Wu, J., Lang, X., Wang, C., Bai, Y., Riley, D. G., Liu, L., & Ma, X.
(2021).
Comparative transcriptome and histological analyses provide insights into the skin pigmentation in Minxian black fur sheep (Ovis aries). PeerJ.
9, e11122-e11122.
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Guy, C. P., Wellman, C. L., Riley, D. G., Long, C. R., Randel, R. D., Welsh, T. H., & White-Springer, S. H.
(2020).
145 President Oral Presentation Pick: Prenatal stress increases skeletal muscle mitochondrial volume density and function in yearling Brahman calves. Journal of Animal Science.
98(Supplement_4), 120-121.
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Rouquette, M., Norman, K. D., Riley, D. G., & Randel, R. D.
(2020).
Body condition of F-1 (Hereford x or Angus x Brahman) cows at weaning and effects on cow-calf performance and subsequent postpartum performance. Applied Animal Science.
36(6), 890-897.
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Cooke, R. F., Cardoso, R. C., Cerri, R., Lamb, G. C., Pohler, K. G., Riley, D. G., & Vasconcelos, J.
(2020).
Cattle adapted to tropical and subtropical environments: genetic and reproductive considerations. Journal of Animal Science.
98(2), skaa015.
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Riley, D. G., Thorne, J. W., Redden, R. R., Herring, A. D., & Waldron, D. F.
(2020).
Comparative performance of Dorper and Rambouillet ewes on West Texas range. SMALL RUMINANT RESEARCH.
185, 106065-106065.
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Earnhardt, A. L., Wellman, C. L., Hairgrove, T., Cardoso, R. C., Long, C. R., Riley, D. G., Randel, R., & Welsh, T. H.
(2020).
Evaluation of the effect of prenatal transportation stress on endocrine and immune tissues of neonatal Brahman calves. Journal of Animal Science.
98(Supplement_2), 38-38.
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Celestino, E. F., Hieber, J. K., Dahlen, C. R., Riley, D. G., Wagner, S. A., & Hanna, L.
(2020).
Evaluator effect on the prediction of genetic merit using subjective measures of beef cattle temperament. Journal of Animal Science.
98(Supplement_3), 161-161.
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Delgadillo Liberona, J. S., Langdon, J. M., Herring, A. D., Blackburn, H. D., Speidel, S. E., Sanders, S., & Riley, D. G.
(2020).
Random regression of Hereford percentage intramuscular fat on geographical coordinates. Journal of Animal Science.
98(1), skz359.
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Yu, H., Morota, G., Celestino, E. F., Dahlen, C. R., Wagner, S. A., Riley, D. G., & Hulsman Hanna, L. L.
(2020).
Deciphering Cattle Temperament Measures Derived From a Four-Platform Standing Scale Using Genetic Factor Analytic Modeling. 11, 599.
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Paredes-Snchez, F. A., Sifuentes-Rincn, A. M., Casas, E., Arellano-Vera, W., Parra-Bracamonte, G. M., Riley, D. G., Welsh, T. H., & Randel, R. D.
(2020).
Novel genes involved in the genetic architecture of temperament in Brahman cattle. PLoS ONE.
15(8), e0237825-e0237825.
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Paredes-Sanchez, F. A., Casas, E., Parra-Bracamonte, G. M., Arellano-Vera, W., Riley, D. G., Welsh, T. H., Sifuentes-Rincn, A. M., & Randel, R. D.
(2019).
303 Identification of candidate genes related to temperament in Brahman cattle. Journal of Animal Science.
97(Supplement_3), 2-3.
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Littlejohn, B. P., Riley, D. G., Neuendorff, D. A., Long, C. R., Welsh, T. H., & Randel, R. D.
(2019).
304 Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves. Journal of Animal Science.
97(Supplement_3), 3-3.
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Riley, D. G.
(2019).
37 Genetic aspects of livestock adaptation. Journal of Animal Science.
97(Supplement_3), 35-35.
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Hanna, L., Hiebera, J. K., Yu, H., Celestino, E., Dahlen, C. R., Wagner, S. A., & Riley, D. G.
(2019).
Blood collection has negligible impact on scoring temperament in Angus-based weaned calves. Livestock Science.
230, 103835-103835.
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Celestino, E. F., Hieber, J. K., Dahlen, C. R., Riley, D. G., Wagner, S. A., & Hanna, L.
(2019).
Differences in evaluators and genetic parameter estimations using subjective measurements of beef cattle temperament. Translational Animal Science.
3(Supplement_1), 1769-1773.
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Muntean, C. T., Herring, A. D., Riley, D. G., Gill, C. A., Sawyer, J. E., & Sanders, J. O.
(2018).
Evaluation of F1 cows sired by Brahman, Boran, and Tuli bulls for reproductive, maternal, and cow longevity traits. Journal of Animal Science.
96(7), 2545-2552.
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Littlejohn, B. P., Riley, D. G., Welsh, T. H., Randel, R. D., Willard, S. T., & Vann, R. C.
(2018).
Use of random regression to estimate genetic parameters of temperament across an age continuum in a crossbred cattle population. Journal of Animal Science.
96(7), 2607-2621.
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Engle, B. N., Herring, A. D., Sawyer, J. E., Riley, D. G., Sanders, J. O., & Gill, C. A.
(2018).
Genome-wide association study for stayability measures in Nellore-Angus crossbred cows. Journal of Animal Science.
96(4), 1205-1214.
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Langdon, J. M., Delgadillo, J. S., Herring, A. D., Blackburn, H. D., Speidel, S. E., Sanders, S., Krehbiel, B. C., & Riley, D. G.
(2018).
1 Comparison of Linear Mixed Model and Random Regression Model for Weaning Weight in Hereford Cattle over a United States Longitudinal Gradient. Journal of Animal Science.
96(suppl_1), 1-1.
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Holland, P. W., Hulsman Hanna, L. L., Vonnahme, K. A., Reynolds, L. P., Taylor, J. B., & Riley, D. G.
(2018).
2 Genetic Parameters for Lamb Mortality Associated with Pneumonia. Journal of Animal Science.
96(suppl_1), 1-1.
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Coleman, S. W., Chase, C. C., Phillips, W. A., & Riley, D. G.
(2018).
Feed efficiency of tropically adapted cattle when fed in winter or spring in a temperate location. Journal of Animal Science.
96(6), 2438-2452.
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Mohammad, Z. H., Hasan, A. A., Kerth, C. R., Riley, D. G., & Taylor, T. M.
(2018).
Increased Effectiveness of Microbiological Verification by Concentration-Dependent Neutralization of Sanitizers Used in Poultry Slaughter and Fabrication Allowing Salmonella enterica Survival. Foods.
7(3), 32-32.
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Woolfolk, M. R., Sanders, J. O., Rouquette, F. M., Randel, R. D., & Riley, D. G.
(2017).
Genetic evaluation of postweaning performance traits in Brahman and Brahman-influenced stockers grazing ryeryegrass or bermudagrass pastures. Professional Animal Scientist.
33(3), 334-341.
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Ngere, L., Burke, J. M., Herring, A. D., Sanders, J. O., Craig, T. M., van Wyk, J. A., & Riley, D. G.
(2017).
Utilization of year-round data in the estimation of genetic parameters for internal parasite resistance traits in Dorper sheep. SMALL RUMINANT RESEARCH.
151, 5-10.
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Chase, C. C., Randel, R. D., Riley, D. G., Coleman, S. W., & Phillips, W. A.
(2017).
Evaluation of tropically adapted straightbred and crossbred beef cattle: Cortisol concentration and measures of temperament at weaning and transport,,. Journal of Animal Science.
95(12), 5253-5262.
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Coleman, S. W., Chase, C. C., Riley, D. G., & Williams, M. J.
(2017).
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. Journal of Animal Science.
95(1), 139-153.
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Dias, M. M., Cnovas, A., Mantilla-Rojas, C., Riley, D. G., Luna-Nevarez, P., Coleman, S. J., ... Oliveira, H. N.
(2017).
SNP detection using RNA-sequences of candidate genes associated with puberty in cattle. Genetics and Molecular Research.
16(1),
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Littlejohn, B. P., Roberts, M. C., Bedenbaugh, M. N., Lewis, A. W., Neuendorff, D. A., Riley, D. G., ... Welsh, T.
(2017).
Evaluation of the influence of prenatal transportation stress on GnRH-stimulated luteinizing hormone and testosterone secretion in sexually mature Brahman bulls. Journal of Animal Science.
95(1), 129-138.
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Littlejohn, B. P., Roberts, M. C., Bedenbaugh, M. N., Lewis, A. W., Neuendorff, D. A., Riley, D. G., ... Welsh, T. H.
(2017).
Evaluation of the influence of prenatal transportation stress on GnRH-stimulated luteinizing hormone and testosterone secretion in sexually mature Brahman bulls. Journal of Animal Science.
95(1), 129-138.
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Engle, B. N., Gill, C. A., Sanders, J. O., Riley, D. G., Sawyer, J. E., & Herring, A. D.
(2016).
0384 WS Influence of first calving date on stayability in Bos indicus crossbred cows. Journal of Animal Science.
94(suppl_5), 186-186.
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Campbell, E., Sanders, J. O., Lunt, D. K., Gill, C. A., Taylor, J. F., Davis, S. K., Riley, D. G., & Smith, S. B.
(2016).
Adiposity, lipogenesis, and fatty acid composition of subcutaneous and intramuscular adipose tissues of Brahman and Angus crossbred cattle. Journal of Animal Science.
94(4), 1415-1425.
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Holland, P. W., Gill, C. A., Herring, A. D., Sanders, J. O., & Riley, D. G.
(2016).
Identification of regions of the bovine genome associated with gray coat color in a Nellore_Angus cross population. Journal of Animal Science.
94(suppl_1), 5-5.
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Sarlo, K. M., Riley, D. G., Sawyer, J. E., Gill, C. A., Sanders, J. O., & Herring, A. D.
(2016).
Age-related weights of second and third generation Nellore-Angus half-blood steers. Journal of Animal Science.
94(suppl_1), 3-4.
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Bauer, L. W., Sanders, J. O., Riley, D. G., Herring, A. D., & Sawyer, J. E.
(2016).
Effects of breed type and sex on calf birth weight in reciprocal F2 Angus and Nellore Crosses. Journal of Animal Science.
94(suppl_1), 4-4.
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Littlejohn, B. P., Riley, D. G., Welsh, T., Randel, R. D., Willard, S. T., & Vann, R. C.
(2016).
Heritability of temperament at weaning in a crossbred cattle population. Journal of Animal Science.
94(suppl_1), 1-1.
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Delgadillo, J. S., Riley, D. G., Gill, C. A., Sanders, J. O., Sawyer, J. E., & Herring, A. D.
(2016).
Hot Carcass Weight and Longissimus Muscle Area in F-2 and F-3 Nellore-Angus Steers. Journal of Animal Science.
94(suppl_1), 4-4.
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Bohac, J. K., Sanders, J. O., Herring, A. D., Riley, D. G., & Sawyer, J. E.
(2016).
Longevity of Brahman, Angus, F-1 and F-2 Brahman-Angus cows. Journal of Animal Science.
94(suppl_1), 2-3.
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Greyvenstein, O., Reich, C. M., van Marle-Koster, E., Riley, D. G., & Hayes, B. J.
(2016).
Polyceraty (multi-horns) in Damara sheep maps to ovine chromosome 2. Animal Genetics.
47(2), 263-266.
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Royer, A. M., Shivers, C., Riley, D. G., Elzo, M. A., & Garcia, M. D.
(2016).
Single nucleotide polymorphisms associated with carcass traits in a population of Brahman and Brahman-influenced steers. Genetics and Molecular Research.
15(2),
-
Riley, D. G., Burke, J. M., Chase, C. C., & Coleman, S. W.
(2016).
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. Journal of Animal Science.
94(1), 1-12.
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Hanna, L., Garrick, D. J., Gill, C. A., Herring, A. D., Sanders, J. O., & Riley, D. G.
(2015).
Cross-validation of genetic and genomic predictions of temperament in Nellore-Angus crossbreds. Livestock Science.
182, 28-33.
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Riley, D. G., Sawyer, J. E., & Sanders, J. O.
(2015).
Trigonometric functions representing annual winter coat shedding and regrowth in Angus cows. Livestock Science.
180, 41-46.
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Tedeschi, L. O., Muir, J. P., Riley, D. G., & Fox, D. G.
(2015).
The role of ruminant animals in sustainable livestock intensification programs. International Journal of Sustainable Development and World Ecology.
22(5), 452-465.
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Davis, K. M., Smith, T., Bolt, B., Meadows, S., Powell, J. G., Vann, R. C., ... Riley, D. G.
(2015).
Technical note: Digital quantification of eye pigmentation of cattle with white faces. Journal of Animal Science.
93(7), 3654-3660.
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Riley, D. G., Burke, J. M., Chase, C., & Coleman, S. W.
(2015).
Genetic effects for reproductive performance of straightbred and crossbred Romosinuano and Angus cows in a temperate zone. Livestock Science.
180, 22-26.
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Hulsman Hanna, L. L., Garrick, D. J., Gill, C. A., Herring, A. D., Sanders, J. O., & Riley, D. G.
(2014).
Comparison of breeding value prediction for two traits in a Nellore-Angus crossbred population using different Bayesian modeling methodologies. Genetics and Molecular Biology.
37(4), 631-637.
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Parish, J. A., Karisch, B. B., Vann, R. C., & Riley, D. G.
(2014).
Effects of steer breed composition on feedlot performance and carcass traits1. Professional Animal Scientist.
30(1), 43-50.
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Riley, D. G., Chase, C. C., Coleman, S. W., & Olson, T. A.
(2014).
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. Journal of Animal Science.
92(5), 1911-1919.
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Riley, D. G., Chase, C. C., Coleman, S. W., & Olson, T. A.
(2014).
Evaluation of the Criollo breed Romosinuano as purebred and crossbred cows with Brahman and Angus in Florida: I. Reproduction and parturition. Journal of Animal Science.
92(5), 1902-1910.
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Hanna, L., Sanders, J. O., Riley, D. G., Abbey, C. A., & Gill, C. A.
(2014).
Identification of a major locus interacting with MC1R and modifying black coat color in an F Nellore-Angus population. Genetics Selection Evolution.
46(1), 4.
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Hanna, L., & Riley, D. G.
(2014).
Mapping genomic markers to closest feature using the R package Map2NCBI. Livestock Science.
162(1), 59-65.
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Coleman, S. W., Chase, C. C., Phillips, W. A., Riley, D. G., & Olson, T. A.
(2012).
Evaluation of tropically adapted straightbred and crossbred cattle: postweaning gain and feed efficiency when finished in a temperate climate. Journal of Animal Science.
90(6), 1955-1965.
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Riley, D. G., Chase, C., Coleman, S. W., & Olson, T. A.
(2012).
Genetic assessment of rectal temperature and coat score in Brahman, Angus, and Romosinuano crossbred and straightbred cows and calves under subtropical summer conditions. Livestock Science.
148(1-2), 109-118.
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Riley, D. G., Chase, C. C., Coleman, S. W., Phillips, W. A., Miller, M. F., Brooks, J. C., Johnson, D. D., & Olson, T. A.
(2012).
Genetic effects on carcass quantity, quality, and palatability traits in straightbred and crossbred Romosinuano steers. Journal of Animal Science.
90(7), 2159-2166.
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Luna-Nevarez, P., Rincon, G., Medrano, J. F., Riley, D. G., Chase, C., Coleman, S. W., ... Thomas, M. G.
(2012).
Identification of one polymorphism from the PAPP-A2 gene associated to fertility in Romosinuano beef heifers raised under a subtropical environment. REVISTA MEXICANA DE CIENCIAS PECUARIAS.
3(2), 185-200.
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Caldwell, L. C., Chase, C. C., Riley, D. G., Coleman, S. W., Phillips, W. A., Spicer, L. J., Welsh, T. H., & Randel, R. D.
(2011).
The influence of tropical adaptation on plasma concentrations of insulin-like growth factor-I in purebred and crossbred beef cattle. Journal of Animal Science.
89(12), 4017-4022.
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Chase, C. C., Elsasser, T. H., Spicer, L. J., Riley, D. G., Lucy, M. C., Hammond, A. C., Olson, T. A., & Coleman, S. W.
(2011).
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. Domestic Animal Endocrinology.
41(1), 1-13.
-
Riley, D. G., Arthington, J. D., Chase, C. C., Coleman, S. W., Griffin, J. L., Rae, D. O., Mader, T. L., & Olson, T. A.
(2011).
Evaluation of 2 sources of Angus cattle under South Florida subtropical conditions. Journal of Animal Science.
89(7), 2265-2272.
-
Luna-Nevarez, P., Rincon, G., Medrano, J. F., Riley, D. G., Chase, C. C., Coleman, S. W., ... Thomas, M. G.
(2011).
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. Journal of Animal Science.
89(4), 926-934.
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Riley, D. G., & Van Wyk, J. A.
(2011).
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. SMALL RUMINANT RESEARCH.
99(2-3), 122-129.
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Brew, M. N., Myer, R. O., Hersom, M. J., Carter, J. N., Elzo, M. A., Hansen, G. R., & Riley, D. G.
(2011).
Water intake and factors affecting water intake of growing beef cattle. Livestock Science.
140(1-3), 297-300.
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Burdick, N. C., Agado, B., White, J. C., Matheney, K. J., Neuendorff, D. A., Riley, D. G., ... Randel, R. D.
(2011).
Technical note: Evolution of exit velocity in suckling Brahman calves. Journal of Animal Science.
89(1), 233-236.
-
Thrift, F. A., Sanders, J. O., Brown, .., Brown, A. H., Herring, A. D., Riley, D. G., ... Baker, J. F.
(2010).
Review: Preweaning, Postweaning, and Carcass Trait Comparisons for Progeny Sired by Subtropically Adapted Beef Sire Breeds at Various US Locations123. Professional Animal Scientist.
26(5), 451-473.
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Scharf, B., Carroll, J. A., Riley, D. G., Chase, C. C., Coleman, S. W., Keisler, D. H., Weaber, R. L., & Spiers, D. E.
(2010).
Evaluation of physiological and blood serum differences in heat-tolerant (Romosinuano) and heat-susceptible (Angus) Bos taurus cattle during controlled heat challenge. Journal of Animal Science.
88(7), 2321-2336.
-
Riley, D. G., Chase, C. C., Coleman, S. W., Olson, T. A., & Randel, R. D.
(2010).
Evaluation of tropically adapted straightbred and crossbred beef cattle: heifer age and size at first conception and characteristics of their first calves. Journal of Animal Science.
88(10), 3173-3182.
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Burke, J. M., Coleman, S. W., Chase, C. C., Riley, D. G., Looper, M. L., & Brown, M. A.
(2010).
Interaction of breed type and endophyte-infected tall fescue on milk production and quality in beef cattle. Journal of Animal Science.
88(8), 2802-2811.
-
Rhoades, R. D., Ponce, C. H., Smith, S. B., Herring, A. D., Tedeschi, L. O., Lunt, D. K., ... Sawyer, J. E.
(2009).
Evaluation of Growth-Based Predictions of Carcass Fat and Marbling at Slaughter Using Ultrasound Measurements 1. Professional Animal Scientist.
25(4), 434-442.
-
Elzo, M. A., Riley, D. G., Hansen, G. R., Johnson, D. D., Myer, R. O., Coleman, S. W., ... Driver, J. D.
(2009).
Effect of breed composition on phenotypic residual feed intake and growth in Angus, Brahman, and Angus × Brahman crossbred cattle. Journal of Animal Science.
87(12), 3877-3886.
-
Riley, D. G., & Van Wyk, J. A.
(2009).
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. Veterinary Parasitology.
164(1), 44-52.
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Dinh, T., Blanton, J. R., Riley, D. G., Chase, C. C., Coleman, S. W., Phillips, W. A., ... Thompson, L. D.
(2009).
Intramuscular fat and fatty acid composition of longissimus muscle from divergent pure breeds of cattle. Journal of Animal Science.
88(2), 756-766.
-
Riley, D. G., Loneragan, G. H., Phillips, W. A., Gray, J. T., & Fedorka-Cray, P. J.
(2008).
Fecal shedding of foodborne pathogens by Florida-born heifers and steers in U.S. beef production segments. 71(4), 807-810.
-
Qiu, X., Arthington, J. D., Riley, D. G., Chase, C. C., Phillips, W. A., Coleman, S. W., & Olson, T. A.
(2007).
Genetic effects on acute phase protein response to the stresses of weaning and transportation in beef calves. Journal of Animal Science.
85(10), 2367-2374.
-
Littlejohn, B., Price, D., Neuendorff, D., Carroll, J., Vann, R., Riggs, P., ... Randel, R.
137 Prenatal transportation stress alters genome-wide DNA methylation in suckling Brahman bull calves. Journal of Animal Science.
96(suppl_3), 349-349.
-
Littlejohn, B., Price, D., Neuendorff, D., Carroll, J., Vann, R., Riggs, P., ... Randel, R.
138 Prenatal stress alters genes in signaling pathways influencing behavior and stress response by differential methylation of DNA. Journal of Animal Science.
96(suppl_3), 349-350.
-
Littlejohn, B. P., Price, D. M., Neuendorff, D. A., Carroll, J. A., Vann, R. C., Riggs, P. K., ... Randel, R. D.
376 Awardee Talk - Prenatal transportation stress alters physiology of suckling Brahman calves as mediated by changes in DNA methylation. Journal of Animal Science.
97(Supplement_3), 142-142.
-
Riley, D. G., Gill, C. A., Herring, A. D., Riggs, P. K., Sawyer, J. E., & Sanders, J. O.
Alternative parameterizations of relatedness in whole genome association analysis of pre-weaning traits of Nelore-Angus calves. Genetics and Molecular Biology.
37(3), 518-525.
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Baker, E. C., Riley, D. G., Cardoso, R. C., Hairgrove, T. B., Long, C. R., Randel, R. D., & Welsh, T. H.
Assessment of Prenatal Transportation Stress and Sex on Gene Expression Within the Amygdala of Brahman Calves. Biology.
13(11), 915-915.
-
Tolleson, M. W., Gill, C. A., Herring, A. D., Riggs, P. K., Sawyer, J. E., Sanders, J. O., & Riley, D. G.
Association of udder traits with single nucleotide polymorphisms in crossbred Bos indicus-Bos taurus cows. Journal of Animal Science.
95(6), 2399-2407.
-
Riley, D. G., Gill, C. A., Boldt, C. R., Funkhouser, R. R., Herring, A. D., Riggs, P. K., ... Sanders, J. O.
Crossbred steer temperament as yearlings and whole genome association of steer temperament as yearlings and calf temperament post-weaning. Journal of Animal Science.
94(4), 1408-1414.
-
Simmons, M. A., Riggs, P. K., Sanders, S., Herring, A. D., Sanders, J. O., & Riley, D. G.
Distributional characterizations and testing for differences of relatedness and inbreeding of a subpopulation of American Hereford bulls. Translational Animal Science.
5(1), txab008.
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Baker, E. C., Cilkiz, K. Z., Riggs, P. K., Littlejohn, B. P., Long, C. R., Welsh, T. H., Randel, R. D., & Riley, D. G.
Effect of prenatal transportation stress on DNA methylation in Brahman heifers. Livestock Science.
240, 104116-104116.
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Earnhardt, A. L., Baker, E. C., Cilkiz, K. Z., Riley, D. G., Ghaffari, N., Littlejohn, B. P., ... Welsh, T. H.
Evaluation of Peripheral Blood Leukocytes as a Surrogate for RNA-Seq Detection of Gene Expression in Stress Axis Tissues of Mature Brahman. Journal of Animal Science.
99(Supplement_2), 2-2.
-
Kamilar, V., West, S., Littlejohn, B. P., Long, C. R., Riley, D. G., Riggs, P. K., ... Cardoso, R. C.
Evaluation of Prenatal Transportation Stress on the Number of Pituitary Corticotrophs in Mature Brahman Cows. Journal of Animal Science.
99(Supplement_2), 24-24.
-
Young, C. L., Riley, D. G., Randel, R. D., & Welsh, T. H.
Factors Affecting Antibody-Mediated Immune Response and Cellular-Mediated Immune Response in Weaned Brahman Calves. 3(4), 385-400.
-
Riley, D. G., Gill, C. A., Herring, A. D., Riggs, P. K., Sawyer, J. E., Lunt, D. K., & Sanders, J. O.
Genetic evaluation of aspects of temperament in Nellore-Angus calves. Journal of Animal Science.
92(8), 3223-3230.
-
Mungua Vsquez, M. F., Gill, C. A., Riggs, P. K., Herring, A. D., Sanders, J. O., & Riley, D. G.
Genetic evaluation of crossbred Bos indicus cow temperament at parturition. Journal of Animal Science.
102, skae022.
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Riley, D. G., Miller, R. K., Nicholson, K. L., Gill, C. A., Herring, A. D., Riggs, P. K., ... Sanders, J. O.
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. Livestock Science.
229, 150-158.
-
Riley, D. G., Miller, R. K., Nicholson, K. L., Gill, C. A., Herring, A. D., Riggs, P. K., ... Sanders, J. O.
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. Livestock Science.
232, 103897-103897.
-
Riley, D. G., Mantilla-Rojas, C., Miller, R. K., Nicholson, K. L., Gill, C. A., Herring, A. D., ... Sanders, J. O.
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. Livestock Science.
233, 103943-103943.
-
Rojas, C. M., Riggs, P. K., Gill, C. A., Herring, A. D., Sanders, J. O., Sawyer, J. E., Miller, R. K., & Riley, D. G.
Genome wide association of beef flavor and tenderness in steaks (with electrical stimulation and without) from carcasses of Nellore-Bos taurus steers. Journal of Animal Science.
94(suppl_1), 2-2.
-
Cilkiz, K. Z., Baker, E. C., Riggs, P. K., Littlejohn, B. P., Long, C. R., Welsh, T. H., Randel, R. D., & Riley, D. G.
Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age. Epigenetics.
16(5), 519-536.
-
Hanna, L., Garrick, D. J., Gill, C. A., Herring, A. D., Riggs, P. K., Miller, R. K., Sanders, J. O., & Riley, D. G.
Genome-wide association study of temperament and tenderness using different Bayesian approaches in a Nellore-Angus crossbred population. Livestock Science.
161(1), 17-27.
-
Littlejohn, B. P., Price, D. M., Neuendorff, D. A., Carroll, J. A., Vann, R. C., Riggs, P. K., ... Welsh, T. H.
Influence of prenatal transportation stress-induced differential DNA methylation on the physiological control of behavior and stress response in suckling Brahman bull calves. Journal of Animal Science.
98(1), skz368.
-
Baker, E. C., San, A. E., Cilkiz, K. Z., Littlejohn, B. P., Cardoso, R. C., Ghaffari, N., ... Riley, D. G.
Inter-Individual Variation in DNA Methylation Patterns across Two Tissues and Leukocytes in Mature Brahman Cattle. Biology.
12(2), 252-252.
-
Siciliano-Martina, L., Light, J. E., Riley, D. G., & Lawing, A. M.
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves. Animal Conservation.
25(1), 77-90.
-
Cilkiz, K. Z., Baker, E. C., Riggs, P. K., Randel, R. D., Riley, D. G., & Welsh, T.
PSVIII-39 Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age. Journal of Animal Science.
97(Supplement_3), 263-264.
-
Baker, E. C., Cilkiz, K. Z., Riggs, P. K., Randel, R. D., & Riley, D. G.
PSVIII-40 Effect of prenatal transportation stress on DNA methylation in Brahman heifers. Journal of Animal Science.
97(Supplement_3), 262-263.
-
ODaniel, S. E., Riley, D. G., Kochan, K. J., Riggs, P. K., Rouquette, F. M., Randel, R. D., & Welsh, T. H.
PSXIII-13 Comparison of telomere length in age-matched primiparous and multiparous Brahman cows. Journal of Animal Science.
97(Supplement_3), 363-364.
-
Littlejohn, B. P., Price, D. M., Neuendorff, D. A., Carroll, J. A., Vann, R. C., Riggs, P. K., ... Randel, R. D.
Prenatal transportation stress alters genome-wide DNA methylation in suckling Brahman bull calves. Journal of Animal Science.
96(12), 5075-5099.
-
Baker, E. C., Earnhardt, A. L., Cilkiz, K. Z., Littlejohn, B. P., Collins, H. C., Ghaffari, N., ... Riley, D. G.
The Potential Use of DNA Methylation Patterns from Peripheral Blood Leukocytes as a Surrogate for Stress Axis Tissues in Mature Brahman. Journal of Animal Science.
99(Supplement_2), 1-1.
-
Riley, D. G., Welsh, T., Gill, C. A., Hulsman, L. L., Herring, A. D., Riggs, P. K., Sawyer, J. E., & Sanders, J. O.
Whole genome association of SNP with newborn calf cannon bone length. Livestock Science.
155(2-3), 186-196.
-
Ruiz-De-La-Cruz, G., Sifuentes-Rincn, A. M., Paredes-Snchez, F. A., Parra-Bracamonte, G. M., Casas, E., Riley, D. G., ... Randel, R. D.
(2024).
Analysis of nonsynonymous SNPs in candidate genes that influence bovine temperament and evaluation of their effect in Brahman cattle. Molecular Biology Reports.
51(1), 285.
-
conference paper
-
Burnett, R. H., Duvic, M. A., Kutz, B. R., Brown, A., Powell, J. G., Smith, T., Riley, D. G., & Cauble, R. N.
(2020).
Evaluation of hair coat shedding ability as an adaptive trait in Angus cattle in the southern US. Journal of Animal Science.
1-2.
-
Guy, C. P., Wellman, C. L., Riley, D. G., Long, C. R., Randal, R. D., Welsh, T. H., & White-Springer, S. H.
(2020).
President Oral Presentation Pick: Prenatal stress increases skeletal muscle mitochondria' volume density and function in yearling Brahman calves. Journal of Animal Science.
120-120.
-
Littlejohn, B. P., Price, D. M., Neuendorff, D. A., Carroll, J. A., Vann, R. C., Riggs, P. K., ... Randel, R. D.
(2019).
Awardee Talk - Prenatal transportation stress alters physiology of suckling Brahman calves as mediated by changes in DNA methylation. Journal of Animal Science.
142-142.
-
Baker, E. C., Cilkiz, K. Z., Riggs, P. K., Randel, R. D., & Riley, D. G.
(2019).
Effect of prenatal transportation stress on DNA methylation in Brahman heifers. Journal of Animal Science.
262-263.
-
O'Daniel, S. E., Riley, D. G., Neuendorff, D. A., Dailey, J. W., Carroll, J. A., Randel, R. D., & Welsh, T. H.
(2019).
Evaluation of repeated exposure to lipopolysaccharide on vaginal temperature and complete blood count in two-year-old Brahman heifers. Journal of Animal Science.
47-48.
-
Riley, D. G.
(2019).
Genetic aspects of livestock adaptation. Journal of Animal Science.
35-35.
-
Cilkiz, K. Z., Baker, E. C., Riggs, P. K., Randel, R. D., Riley, D. G., & Welsh, T.
(2019).
Genome-wide DNA methylation alteration in prenatally stressed Brahman heifer calves with the advancement of age. Journal of Animal Science.
263-264.
-
Paredes-Sanchez, F. A., Casas, E., Parra-Bracamonte, G. M., Arellano-Vera, W., Riley, D. G., Welsh, T. H., Sifuentes-Rincon, A. M., & Randel, R. D.
(2019).
Identification of candidate genes related to temperament in Brahman cattle. Journal of Animal Science.
2-3.
-
Mund, M. E., Neuendorff, D. A., Quail, L., Banta, J. P., Riley, D. G., Welsh, T. H., & Randel, R. D.
(2019).
The relationship of cell mediated immune response of Brahman cows on calving interval. Journal of Animal Science.
44-44.
-
Littlejohn, B. P., Riley, D. G., Neuendorff, D. A., Long, C. R., Welsh, T. H., & Randel, R. D.
(2019).
Transgenerational influence of prenatal stress on temperament, birth weight, and weaning weight of Brahman calves. Journal of Animal Science.
3-3.
-
Langdon, J., Delgadillo, J. S., Herring, A. D., Blackburn, H. D., Speidel, S. E., Sanders, S., Krehbiel, B. C., & Riley, D. G.
(2018).
Comparison of Linear Mixed Model and Random Regression Model for Weaning Weight in Hereford Cattle over a United States Longitudinal Gradient. Journal of Animal Science.
1-1.
-
O'Daniel, S. E., Riley, D. G., Neuendorff, D. A., Forbes, T. D., Banta, J. P., Welsh, T., Rouquette, F., & Randel, R. D.
(2018).
Comparison of Three Methods of Determining Feed Efficiency on Productivity of Brahman Heifers. Journal of Animal Science.
42-42.
-
Holland, P. W., Hanna, L., Vonnahme, K. A., Reynolds, L. P., Taylor, J. B., & Riley, D. G.
(2018).
Genetic Parameters for Lamb Mortality Associated with Pneumonia. Journal of Animal Science.
1-1.
-
Liberona, J., Langdon, J., Riley, D. G., Blackburn, H. D., Speidel, S. E., Krehbiel, B. C., Sanders, S., & Herring, A. D.
(2018).
Heritability Estimations for Intramuscular Fat in Hereford Cattle Using Random Regressions. Journal of Animal Science.
2-3.
-
Delgadillo, J. S., Riley, D. G., Langdon, J., Hanna, L., & Herring, A. D.
(2017).
Black Hereford genetic parameters and predictions for calf traits with alternate modelling strategies. Journal of Animal Science.
88-88.
-
Cook, C. L., Welsh, T., Garcia, T. J., Riley, D. G., Mwangi, W., Bray, J., ... Randel, R. D.
(2017).
Cellular and antibody mediated immune responses are influenced by sex and pregnancy status in mature Brahman cattle. Journal of Animal Science.
219-220.
-
Hanna, L., Hieber, J. K., Yu, H., Dahlen, C. R., Wagner, S. A., & Riley, D. G.
(2017).
Impact of blood collection on scoring temperament in angus-based weaned calves is negligible. Journal of Animal Science.
19-19.
-
Vann, R. C., Littlejohn, B. P., Riley, D. G., Welsh, T., Randel, R. D., & Willard, S. T.
(2017).
The influence of cow temperament on temperament and performance of offspring. Journal of Animal Science.
242-242.
-
Scienski, K., Holland, P. W., Sanders, J. O., Riley, D. G., & Gill, C. A.
(2016).
Characterization of a region within bovine chromosome 6 associated with gray coat color in a Nellore-Angus cross. Journal of Animal Science.
141-141.
-
Engle, B. N., Herring, A. D., Sawyer, J. E., Riley, D. G., Sanders, J. O., & Gill, C. A.
(2016).
Genome-wide association study for stayability measures in Nellore-Angus crossbred cows. Journal of Animal Science.
142-142.
-
Schmidt, S. E., Neuendorff, D. A., Riley, D. G., Vann, R. C., Willard, S. T., Welsh, T. H., & Randel, R. D.
(2014).
Genetic parameters of three methods of temperament evaluation of Brahman calves. Journal of Animal Science.
3082-3087.
-
Martins, P., Cassiolato, R., Frigoni, F., Salin, M. M., Araujo, D. B., Meneghetti, M., ... Arthington, J. D.
(2010).
Evaluation of a distinct white Angus crossbred phenotype in southern Florida. Journal of Dairy Science.
683-683.
-
O'Daniel, S. E., Kochan, K. J., Long, C. R., Riley, D. G., Randel, R. D., & Welsh, T. H.
Comparison of Telomere Length in Age-Matched Primiparous and Multiparous Brahman Cows. Animals.
363-364.
-
Burnett, R. H., Duvic, M. A., Kutz, B. R., Brown, A., Powell, J. G., Smith, T., Riley, D. G., & Cauble, R. N.
(2020).
Evaluation of hair coat shedding ability as an adaptive trait in Angus cattle in the southern US. Journal of Animal Science.
1-2.
-
institutional repository document
-
Yu, H., Morota, G., Celestino, E. F., Dahlen, C. R., Wagner, S. A., Riley, D. G., & Hanna, L.
(2020).
Deciphering cattle temperament measures derived from a four-platform standing scale using genetic factor analytic modeling
-
Yu, H., Morota, G., Celestino, E. F., Dahlen, C. R., Wagner, S. A., Riley, D. G., & Hanna, L.
(2020).
Deciphering cattle temperament measures derived from a four-platform standing scale using genetic factor analytic modeling
Research
principal investigator on
- Genomic X Environmental Interactions Among Beef Cattle awarded by Agricultural Research Service - (Washington D.C., District of Columbia, United States) 2015 - 2020
- Integration of genomic information in beef production strategies awarded by National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States) 2015 - 2020
co-principal investigator on
- Health and Well-being of Beef Calves: Prenatal Stress Modulation of the Hypothalamic-Pituitary-Adrenal Axis and Telomere Length-- awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2019 - 2021
- Effect of Prenatal Stress on DNA Methylation and Correspondence with Gene Expression in Cattle awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2018 - 2021
Teaching
teaching activities
- ANSC291 Research Instructor
- ANSC305 Animal Breeding Instructor
- ANSC491 Hnr-research Instructor
- ANSC638 Prediction Genetic Merit Instructor
- ANSC642 Adv Quantitative Genetics Instructor
- ANSC684 Professional Internship Instructor
- ANSC684 Professional Internship: In-ab Instructor
- ANSC685 Directed Studies Instructor
- ANSC689 Sptp:adv Quantitative Gene Instructor
- ANSC691 Research Instructor
- GENE613 Quan Genetics I Instructor
- GENE638 Prediction Genetic Merit Instructor
- GENE642 Adv Quantitative Genetics Instructor
Works By Students
chaired theses and dissertations
-
Boenig, Lydia (2011-12). Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Brahman x Hereford Crossbred Cows.
-
Bohac, Jennifer Kay (2015-12). Heterosis for Reproductive and Maternal Traits in First and Second Generation Reciprocal Brahman-Angus Crosses.
-
Davis, Kaycee Marie (2013-12). Digital Analysis of Eye Pigmentation of Hereford, Hereford x Bos indicus or Hereford x Bos taurus Cattle.
-
Dillon, Jasmine Ashley (2013-12). Investigation of Genetic Effects on Birth Weight in Brahman-Simmental Crosses.
-
Holland, Paul W (2015-05). Identification of the Regions of the Bovine Genome Associated with Gray Coat Color in a Nellore-Angus Cross Population.
-
Hulsman, Lauren Lorene (2013-05). Investigation of Genomic Estimated Breeding Values and Association Methodologies using Bayesian Inference in a Nellore-Angus Crossbred Population for Two Traits.
-
Ngere, Lauretta (2015-04). Estimation of Genetic Parameters and Assessment of Genetic Variation for Internal Parasite Resistance Traits in Ruminants.
-
Obeidat, Mohammad Diya Talal Hamed (2013-07). Heterosis and Heterosis Retention for Reproductive and Maternal Traits in Nellore-Angus Crossbred Cows.
-
Woolfolk, Matthew (2014-08). Estimation of Genetic Parameters for Post-Weaning Performance Traits in Brahman and Brahman-Influenced Stocker Cattle on Forage-Based Studies.
Background
education and training
- B.S. in Agricultural Economics, Texas A&M University - (College Station, Texas, United States)
- M.S. in Animal Breeding, Texas A&M University - (College Station, Texas, United States)
- Ph.D. in Genetics, Texas A&M University - (College Station, Texas, United States)
awards and honors
Contact
first name
- David
has last name
- Riley
mailing address
-
Texas A&M University
Animal Science
2471 TAMU
College Station, TX 77843-2471
USA
Other
- david-riley@tamu.edu