Kara Thornton-Kurth
Quinney College of Agriculture and Natural Resources
Associate Dean for Graduate Programs

Educational Background
Expertise
Ruminant Nutrition // Program goal: To uncover the molecular mechanism(s) through which nutrition affects growth and end-product quality of livestock animals.
Biography
Kara Thornton-Kurth is an Associate Professor in the Animal, Dairy and Veterinary Sciences Department at Utah State University. In 2009, she earned her B.S. in Honors Animal Science and a minor in Spanish from Washington State University. She then moved eight miles across the border and completed her doctoral studies in skeletal muscle physiology at the University of Idaho in 2013. Next, Dr. Thornton-Kurth worked as a post-doctoral research associate at University of Minnesota, where she received additional training in skeletal muscle growth. In 2015, she joined USU faculty and runs a research program focusing on the effects of nutrition and growth in livestock animals.
Teaching Interests
Dr. Thornton Kurth currently teaches four separate courses: 1. Animal Feeds & Feeding (ADVS 2500) 2. Applied Animal Nutrition (ADVS 5500/6500) 3. Nutrient Utilization and Metabolization in Livestock (ADVS 5530/6530) and 4. Basic Nutrition (VM7580).
Research Interests
Research in Dr. Thornton-Kurth's lab broadly focuses on improving production and efficiency of livestock animals, particularly brief cattle. A major goal of Dr. Thornton-Kurth's research program is to uncover the molecular mechanism(s) through which nutrition affects growth and end-product quality of livestock animals. Currently, there are 5 projects occurring in her lab:
1. Determining the molecular mechanisms through which anabolic implants improve skeletal muscle growth of beef cattle
2. Understanding the molecular factors responsible for development of tenderness in beef products
3. Learning about how alternative feedstuffs, such as sprouted grains, impact beef products
4. Improving our understanding of the impacts of providing mineral and/or protein supplement to grazing cattle and sheep on production
5. Gaining insight into mineral nutrition of skeletal muscle, using both in vivo and in vitro models
Dr. Thornton-Kurth's research program is currently supported by funds from the Utah Agricultural Experiment Station, the United States Department of Agriculture, the Western Sustainable and Research and Education Programs, as well as private industry funding.
Awards
Graduate Research Mentor of the Year, 2024
CAAS
Graduate Research Mentor of the Year, 2024
ADVS department
Early Career Research Faculty of the Year, 2022
CAAS
Graduate Research Mentor of the Year, 2021
ADVS Department
Graduate Research Mentor of the Year, 2020
ADVS Department
Undergraduate Research Mentor of the Year, 2019
ADVS Department
Gamma Sigma delta Agricultural Graduate Research Student of the Year, 2011
Gamma Sigma Delta- University of Idaho
AVS outstanding graduate student of the year, 2011
University of Idaho
Graduate student poster presentation competition, 2010
Pacific northwest animal nutrition conference
Publications | Abstracts
- Secrist, D.S, Thornton-Kurth, K., (2025). Impacts of Extended Days on Feed on Performance and Carcass Traits of Brahman Influenced Cattle. Proceedings of the 2025 Plains Nutrition Council Spring Conference *
An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.
Publications | Fact Sheets
An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.
Publications | Journal Articles
Academic Journal
- Heaton, M., Reid, C., Briggs, R., Thornton-Kurth, K., Esplin, R., Holgate, B., (2025). Developing programs to meet the needs of Utah women in agriculture. Journal of NACAA, 18:1
- Thornton-Kurth, K., (2024). Expression and secretion of SPARC, FGF-21 and DCN in bovine muscle cells: Effects of age and differentiation. Plos ONE, doi: 10.1371/journal.pone.0299975
- Thornton-Kurth, K., (2024). Influence of steroidal implants and zinc sulfate supplementation on growth performance, trace mineral status, circulating metabolites, and transcriptional changes in skeletal muscle of feedlot steers. Journal of Animal Science, doi: 10.1093/jas/skae154
- Thornton-Kurth, K., (2024). Myokines Produced by Cultured Bovine Satellite Cells Harvested from 3- and 11-Month-Old Angus Steers. Animal, 14:5, doi: 10.3390/ani14050709
- Crump, Z.C, Alberto, A.F, Brown, B.L, Roholt, B.W, Okamoto, L.L, Sego, M.L, Spurling, R.A, Ward, R.E, Blackett, B.M, Harding, R.L, Ranathunga, S.D, Thornton-Kurth, K., (2024). The Effects of Including Sprouted Barley with Alfalfa Hay in the Diet on Ruminal Health and Performance of Cow-Calf Pairs. Journal of Animal Science. Journal of Animal Science, 102, doi: 10.1093/jas/skae074
- Thornton-Kurth, K., (2024). The influence of steroidal implants and manganese sulfate supplementation on growth performance, trace mineral status, hepatic gene expression, hepatic enzyme activity, and circulating metabolites in feedlot steers. Journal of Animal Science, 102, doi: 10.1093/jas/skae062
- Thornton-Kurth, K., (2024). Current challenges and future of agricultural genomes to phenomes in the USA. Genome Biology, 25:8, doi: 10.1186/s13059-023-03155-w
- Peel, M.D, Waldron, B.L, Briscoe, J.T, Rose, M.F, Isom, S.C, Thornton-Kurth, K.J, Hadfield, J.A, Rood, K., Creech, J.E, (2024). Intake and diet preference of dairy heifers grazing mixed or alternating rows of birdsfoot trefoil and cool-season grasses. Grassland Research, doi: https://doi.org/10.1002/glr2.12094
- Briggs, R., Thornton-Kurth, K.J, (2024). Effects of Premortem Stress on Protein Expression, Steak Color, Oxidation, and Myofibrillar Fragmentation Index in the Longissimus Lumborum. Animals, 14:15, doi: 10.3390/ani14152170.
- Motsinger, L.A, Young, A., Feuz, R., Larsen, R., Brady, T.J, Briggs, R.K, Reichhardt, C.C, Pratt, C., Thornton-Kurth, K., (2024). Replacing alfalfa hay with a novel alfalfa leaf pellet product (ProLEAF MAX) and/or alfalfa stems (ProFiber Plus) in the diet of developing dairy heifers alters dry matter intake, but does not negatively impact growth or development. Translational Animal Science, 8:txae038, doi: https://doi.org/10.1093/tas/txae038
- Feuz, R., Feuz, D., Lidgard, A., Crump, Z., Thornton-Kurth, K., Martini, S., Cheng, H., Stafford, C., Matarneh, S., (2024). Cattle Are What They Eat: A Consumer Analysis of Beef Produced from Barley Fodder-Fed Cattle Compared with a Conventional Mixed Ration. Journal of Agricultural and Applied Economics, 56:1, doi: https://doi.org/10.1017/aae.2024.3
- Reichhardt, C.C, Cuthbert, J.M, Motsinger, L.A, Brady, T.J, Briggs, R., Thomas, A., Thornton-Kurth, K., (2023). Anabolic implants alter abundance of mRNA involved in muscle growth, metabolism and inflammation in the longissimus lumborum of Angus steers in the feedlot. Domestic Animal Endocrinology, 82, doi: 10.1016.j.domaniend.2022.106773.
- Stafford, C.D, Taylor, M.J, Buhler, J.F, Dang, D.S, Thornton-Kurth, K., Gerrard, D.E, Matarneh, S., (2023). Muscle proteolysis is differentially influenced by mitochondrial intactness. Meat Science, 207, doi: 10.1016/j.meatsci.2023.109368
- Reichhardt, C.C, Bayles, S.A, Feuz, R., Motsinger, L.A, Alberto, A.F, Okamoto, L.L, Brown, B.L, Briggs, R.K, Roholt, B.W, Bowman, B., Larsen, R., Garcia, M., Thornton-Kurth, K., (2023). Relationship among cattle breed and anabolic implant protocol relative to feedlot performance: Growth, temperament, feeding behavior, carcass traits, and economic return. Domestic Animal Endocrinology, 84-85, 106806. doi: https://doi.org/10.1016/j.domaniend.2023.106806
- Motsinger, L.A, Okamoto, L.L, Ineck, N.E, Udy, B.A, Erickson, C.L, Harraq, Y., Reichhardt, C.C, Murdoch, G.K, Thornton-Kurth, K., (2023). Understanding the effects of trenbolone acetate, polyamine precursors, and polyamines on proliferation, protein synthesis rate, and abundance of genes involved in myoblast growth, polyamine biosynthesis, and protein synthesis in murine myoblasts. . Biology, 12:3, doi: 10.3390/biology12030446
- Greenland, M., Waldron, B., Isom, S., Fonnesbeck, S., Peel, M., Rood, K., Thornton-Kurth, K., Miller, R.L, Hadfield, J., Henderson, B., Creech, J.E, (2023). Dry-matter intake and feed efficiency of heifers from four dairy breed-types grazing organic grass and grass-birdsfoot trefoil mixed pastures. Journal of Dairy Science, doi: https://doi.org/10.3168/jds.2022-22858
- Reichhardt, C.C, Stafford, C.D, Cuthbert, J.M, Dang, D.S, Motsinger, L.A, Taylor, M.J, Briggs, R., Brady, T.J, Thomas, A., Garcia, M., Matarneh, S., Thornton-Kurth, K.J, (2022). Cattle breed type and anabolic implants impact calpastatin expression and abundance of mRNA associated with protein turnover in the longissimus lumborum of feedlot steers. Journal of Animal Science, 100:8, doi: 10.1093.jas.skac204
- Reichhardt, C.C, Ahmadpour, A., Christensen, R.G, Ineck, N.E, Murdoch, G.K, Thornton-Kurth, K., (2021). Understanding the influence of trenbolone acetate and polyamines on proliferation of bovine satellite cells.. Domestic Animal Endocrinology, 74, doi: 10.1016/j.domaniend.2020.106479.
- Rose, M.F, Waldron, B.L, Isom, S.C, Peel, M.D, Thornton-Kurth, K., Miller, R.L, Rood, K.A, Hadfield, J.A, Long, J., Henderson, B., Creech, J.E, (2021). The effects of organic grass and grass-birdsfoot trefoil pastures on Jersey heifer development: Herbage characteristics affecting intake. Journal of Dairy Science, 104:10, 10879-10895. doi: https://doi.org/10.3168/jds.2020-19563
- Briggs, R.K, Christensen, R.G, Quarnberg, S.M, Legako, J.F, Raymond, R.C, MacNeil, M., Thornton-Kurth, K.J, (2021). Relationship between meat quality, carcass characteristics and protein abundance of HSPβ1, HSPA and DJ1 in beef longissimus thoracis pre-rigor or after 14 days aging.. Meat & Muscle Biology, 5:1, doi: 10.22175/mmb.11685
- Dang, D.S, Buhler, J.F, Thornton-Kurth, K., Legako, J.F, Matarneh, S.K, (2020). Myosin heavy chain isoform and metabolic profile differ in beef steaks varying in tenderness. Meat Science, 170, 108266.
- Gardner, J.M, Ineck, N.E, Quarnberg, S.M, Legako, J., Carpenter, C.E, Rood, K., Thornton-Kurth, K., (2020). The influence of maternal dietary intake during mid-gestation on growth, feedlot performance, miRNA and mRNA expression, and carcass and meat quality of the resultant offspring. Meat and Muscle Biology, doi: http://dx.doi.org/10.22175/mmb.11538
- Dang, D., Buhler, J., Davis, H., Thornton-Kurth, K., Matarneh, S., (2020). Inhibition of mitochondrial calcium uniporter enhances postmortem proteolysis and tenderness in beef cattle. Meat Science, 162, 108039. doi: https://doi.org/10.1016/j.meatsci.2019.108039
- Thornton-Kurth, K., (2019). TRIENNIAL GROWTH SYMPOSIUM: THE NUTRITION OF MUSCLE GROWTH: Impacts of nutrition on the proliferation and differentiation of satellite cells in livestock species.. Journal of Animal Science, 97, 2258-2269. doi: 10.1093/jas/skz081.
- Poli, C.H, Thornton-Kurth, K., Legako, J., Bremm, C., Hampel, V.S, Hall, J.O, Ipharraguerre, I., Villalba, J., (2018). Self-selection of plant bioactive compounds by sheep in response to challenge infection with Haemonchus contortus. Physiology & Behavior, 194:2018, 302-310. doi: doi.org/10.1016/j.physbeh.2018.06.013
- Mizell, S., Miller, S.L, Royer, A.M, Thornton-Kurth, K., Garcia, M., (2017). Single Nucleotide Polymorphisms associated with growth and carcass traits located on QTL Regions previously associated with Bovine Respiratory Disease. Genetics and Molecular Research, 16:4
- Thornton-Kurth, K., Chapalamadugu, K.C, Eldredge, E.M, Murdoch, G.K, (2017). Analysis of Longissimus thoracis Protein Expression Associated with Variation in Carcass Quality Grade and Marbling of Beef Cattle Raised in the Pacific Northwestern United States. Journal of Agricultural and Food Chemistry, 65:7, 1434-1442.
- Kamanga-Sollo, E., Thornton-Kurth, K., White, M.E, Dayton, W.R, (2017). Role of G protein-coupled estrogen receptor-1 in estradiol 17β-induced alterations in protein synthesis and protein degradation rates in fused bovine satellite cell cultures. Domestic Animal Endocrinology, 58, 90-96.
- Waldron, B.L, Banks, J.E, Newhall, R., Snyder, D.L, Thornton-Kurth, K., (2016). Interseeding Forage Kochia into Established CRP to Improve Fall and Winter Grazing Potential. Crop, Forage & Turfgrass Mamagement, 2, doi: 10.2134/cftm2015.0200
- Thornton-Kurth, K., Kamanga-Sollo, E., White, M.E, Dayton, W.R, (2016). Active G protein–coupled receptors (GPCR), matrix metalloproteinases 2/9 (MMP2/9), heparin-binding epidermal growth factor (hbEGF), epidermal growth factor receptor (EGFR), erbB2, and insulin-like growth factor 1 receptor (IGF-1R) are necessary for trenbolone acetate–induced alterations in protein turnover rate of fused bovine satellite cell cultures. Journal of Animal Science, 94:6, 2332-2343.
- Thornton-Kurth, K., Richard, R.P, Colle, M.J, Doumit, M.E, de Veth, M.J, Hunt, C.W, Murdoch, G.K, (2015). Effects of dietary potato by-product and rumen-protected histidine on growth, carcass characteristics and quality attributes of beef.. Meat science, 107, 64-74.
- Thornton-Kurth, K., Kamanga-Sollo, E., White, M.E, Dayton, W.R, (2015). Role of G protein-coupled receptors (GPCR), matrix metalloproteinases 2 and 9 (MMP2 and MMP9), heparin-binding epidermal growth factor-like growth factor (hbEGF), epidermal growth factor receptor (EGFR), erbB2, and insulin-like growth factor 1 receptor (IGF-1R) in trenbolone acetate-stimulated bovine satellite cell proliferation.. Journal of animal science, 93:9, 4291-301.
- Kamanga-Sollo, E., Thornton-Kurth, K., White, M.E, Dayton, W.R, (2014). Role of G protein-coupled estrogen receptor-1, matrix metalloproteinases 2 and 9, and heparin binding epidermal growth factor-like growth factor in estradiol-17β-stimulated bovine satellite cell proliferation.. Domestic animal endocrinology, 49, 20-6.
- Welch, C.M, Thornton-Kurth, K., Murdoch, G.K, Chapalamadugu, K.C, Schneider, C.S, Ahola, J.K, Hall, J.B, Price, W.J, Hill, R.A, (2013). An examination of the association of serum IGF-I concentration, potential candidate genes, and fiber type composition with variation in residual feed intake in progeny of Red Angus sires divergent for maintenance energy EPD.. Journal of animal science, 91:12, 5626-36.
- Thornton-Kurth, K., Welch, C.M, Davis, L.C, Doumit, M.E, Hill, R.A, Murdoch, G.K, (2012). Bovine sire selection based on maintenance energy affects muscle fiber type and meat color of F1 progeny.. Journal of animal science, 90:5, 1617-27.
- Papasani, M.R, Thornton-Kurth, K., Yinggian, Z., Brezas, A., Welch, C., Wang, G., Villasante, A., Pokharel, D., Cheguru, P., Kotla, S., Julien, D.C, (2010). Does obesity reduce load-induced muscle hypertrophy?. The Journal of physiology, 588:Pt 11, 1819-20.
An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.
Publications | MultiMedia
Video
An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.
Publications | Other
An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.