Haley Larson

Haley LarsonAssistant Professor
Animal Health

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Biography

Haley Larson, Ph.D., is an assistant professor of animal nutrition and health at K-State Olathe, where she focuses her research and academic initiatives on advancing animal health, nutrition and regulatory science. Her research translates results from In vitro gastrointestinal fermentation models to live animal field trials to improve the evaluation of feed ingredients and accelerate the development of innovative nutritional solutions for companion and production animals.

Larson also plays a key role in expanding industry-academic partnerships, having helped develop graduate programs that foster collaboration across the Kansas City metro and beyond. At K-State Olathe, she teaches about product development, advanced nutrition concepts, regulatory affairs and applied statistics. She holds ancillary status in Kansas State University's Departments of Animal Sciences and Industries and Diagnostic Medicine/Pathobiology and serves as the program lead for the animal science program in Olathe.

Her efforts to enhance laboratory capabilities at K-State Olathe support applied, translational research and her dedication to the campus' animal health regulatory affairs initiatives have positioned K-State as a hub for regulatory education and workforce development.

She currently serves as the director and Scientific Lead for the Scientific Review of Ingredient Submissions (SRIS), a national partnership between the American Association of Feed Control Officials (AAFCO) and Kansas State University. In this role, Larson supports the development and maintenance of science-based regulatory frameworks essential to the safety, transparency and continued innovation of the animal nutrition industry.

Academic Program Affiliations

Education

  • Ph.D., Ruminant Nutrition, University of Minnesota—Twin Cities
  • B.S., Animal Science, University of Minnesota—Twin Cities

Research Interests

  • Research program focused on solutions for beef producer challenges by integrating nutritional strategies into emerging technology for animal health
  • Fermentation patterns for nutrients of health and nutritional purpose
  • Use of In vitro dual-flow continuous culture fermenters to model rumen fermentation
  • Development of biological modeling capabilities and analytics
  • Evaluation of rapid assays for on-farm applications

News and Blog Highlights

Teaching Schedule

  • AAI 795 - Regulations Associated with Animal Nutrition
  • AAI 841 - Strategies in Clinical and Preclinical Research for Regulatory Affairs in Animal Science
  • AAI 861 - Research Strategies to Drive Development of Animal Health Products
  • AAI 867 - Zoonotic Pathogens in the Food Chain
  • AAI 870 - Seminar in Applied and Interdisciplinary Studies
  • ASI 890 - Graduate Seminar in Animal Sciences and Industry
  • ASI 902 - Nutritional Biochemistry
  • ASI 990 - Seminar in Animal Sciences Research

Affiliations

Publications/Scholarly Work

Larson, H. E., Jaderborg, J. P., Paulus-Compart, D. M., Crawford, G. I., & DiCostanzo, A. (2023). Effect of substitution of distillers grains and glycerin for steam–flaked corn in finishing cattle diets on growth performance and carcass characteristics. Journal of Animal Science, 101.

Larson, H. E., Crawford, G. I., Cox, R. B., & DiCostanzo, A. (2023). Effect of inclusion of distillers grains with solubles and crude glycerin in beef cattle finishing diets on ruminal fermentation and fatty acid biohydrogenation. Journal of Animal Science, 101.

Nichols, R. K., Carter, C. M., Hood, J.-P., Jackson, M. J., Joseph, S. M., Larson, H., Lonstein, W. D., Mai, R., McCreight, R., & Mumm, H. C. (2022). Space Systems: Emerging Technologies and Operations. Chapter 12: Humanitarian use of space technologies to improve global food supply and cattle management.

INVITED SPEAKER: Larson, H. (2022). “Beyond the age of information: Role of technological advancements and data analytics in the success of animal agriculture.” Presented to Innovations in Ag Tech conference. Kansas City, KS. August 4-6.

INVITED SPEAKER: Johnson, H., and A. DiCostanzo (2017). "Effects of Growing Phase Nutrition on Finishing Performance and Carcass Quality of Steers: A Meta-analysis." Paper presented to 78th Minnesota Nutrition Conference. Mankato, MN. September 20-21.

Salfer, I.J., C. Staley, H.E. Johnson, M. Sadowsky, and M.D. Stern. "Comparisons of bacterial populations found in the rumen and in a continuous culture in vitro fermentation system using high throughput 16S amplicon sequencing." Journal
of Animal Science. April 2018.

INVITED SPEAKER: Larson, H., M. Stern, and A. DiCostanzo. (2016). The role of diet in determining omega-3 concentrations in beef or milk. Paper presented to 77th Minnesota Nutrition Conference. Prior Lake, MN. September 21-22.

Abstract Presentations

Larson, H.E., Owens, F.N., and A. DiCostanzo. (2021). Equivalent effects of growing phase ADG and DOF at various placement weights on finishing beef cattle performance using meta-analysis approach. Presentation to ASAS National Meeting, Louisville, KY. July 14-17

Larson, H.E., Adams, A.P., and R. Stuteville. (2021) Development of an Industry Relevant Graduate Certificate for Regulatory Affairs in Animal Health. Presentation to ASAS National Meeting, Louisville, KY. July 14-17

El Haddad, S., Score, P., Roman-Garcia, Y., Piantoni, P., Larson, H., and G. Schroeder. (2021) Evaluation of 2 sources of monensin on rumen fermentation and digestion in continuous culture fermenters fed a lactating dairy cow diet. Poster presented to ADSA National Meeting. Virtual. July 11-14.

Adams, A.P., Larson, H.E., and R. Stuteville. (2021) Creating and Launching an Industry Relevant Graduate Certificate for Regulatory Affairs in Animal Health. Presentation to Big 12 Teaching and Learning Conference. June

Garcia-Ascolani, M. E., DiLorenzo, N., Sun, Y., Aubert, T., & Larson, H. (2020). 183 A blend of plant extracts (Actifor Pro) potentially reduced methane production in a dual-flow continuous culture system fed bermudagrass hay with or without corn gluten feed. Journal of Animal Science, 98(Suppl 4), 149.

Zeltwanger, J., H.E. Larson-Johnson, M.D. Stern, A. Dicostanzo (2019). Effects of dietary-induced pH changes on feed digestion, nitrogen metabolism, fermentation, and biohydrogenation of polyunsaturated fatty acids in dual-flow
continuous culture fermenters. Presentation to ASAS-CSAS Annual Meeting. July 8-11.

Zeltwanger, J., H.E. Larson-Johnson, M.D. Stern, A. Dicostanzo (2019). Effects of dietary-induced pH changes on feed digestion, nitrogen metabolism, fermentation, and biohydrogenation of polyunsaturated fatty acids in dual-flow
continuous culture fermenters. Poster Presented to Plains Nutrition Council. April 4-6.

Johnson, H.E., Y. Sun, G.E. Margaria, P. Piantoni, A.A.A. Jacobs, N.A. Nachtrieb, G.T. Sales, and G.F. Schroeder (2018). Effects of replacing dietary starch with digestible NDF at two agitation speeds on fiber digestibility and fermentation parameters in continuous culture fermenters. Poster presented to ADSA National meeting. Knoxville, TN. June 24-27.

Johnson, H., G.I. Crawford, R. Cox, and A. DiCostanzo (2017). Effect of inclusion of modified distillers grains and soy glycerin in beef cattle finishing diets on ruminal fermentation. Poster presented to Minnesota Nutrition Conference. Mankato, MN. September 20-21.

Johnson, H. and A. DiCostanzo (2017). A Meta-analysis on the effects of pre-finishing strategy on feedlot and carcass performance. Poster presented to Plains nutrition council spring conference. San Antonio, TX. April.

Johnson, H. and A. DiCostanzo (2017). A Meta-analysis on the effects of pre-finishing strategy on feedlot and carcass performance. Paper presented to the ASAS/ADSA Midwestern section annual regional meeting. Omaha, NE. March.

Larson, H., and A. DiCostanzo. (2016). Impact of rate of gain and days on feed during the growing phase on feed conversion during the finishing phase. Poster presented to Minnesota Nutrition Conference. Prior Lake, MN. September 21-22.

Salfer, I., H. Larson, and M. Stern. (2016). Comparisons of microbial populations found in the rumen and in a dual-fow continuous culture fermentation system using high-throughput 16S amplicon sequencing. Poster presented to ADSA/ASAS National Joint Annual Meeting. Salt Lake City, UT. July 19-23.

VanDerWal, A., H. Larson, and A. DiCostanzo. (2016). An In situ evaluation of crude protein degradation for common backgrounding and finishing feedstuffs fed to cattle in the Midwest region. Poster presented to University of Minnesota
Undergraduate Research Symposium. Minneapolis, MN. April 29.

Larson, H., and A. DiCostanzo. (2016). Impact of rate of gain and days on feed during the growing phase on feed conversion during the finishing phase. Poster presented to Plains Nutrition Council Spring Conference. San Antonio, TX.
April 14-15.

Larson, H., M. Lostetter, and A. DiCostanzo. (2016). Characterization of nutrient content, yield, and gross return to cattle feeding at three corn crop endpoints. Poster presented to ASAS/ADSA Midwestern section annual regional meeting. Des Moines, IA. March 14-16.

Larson, H., I. Shinzato, M. Miura, I. Salfer, S. Fessenden, and M. Stern. (2015). Evaluation of three ruminal protected lysine sources produced in two different batches using a modified three-step in vitro procedure. Poster presented to
ADSA/ASAS National Joint Annual Meeting. Orlando, Fl. July 12-16.

Larson, H., N. Kenney, and A. DiCostanzo. (2015). Evaluation of a feed additive mixture of direct fed microbials, prebiotics, and enzymes on in vitro true digestibility of feeds. Poster presented to Plains Nutrition Council Spring Conference. San Antonio, TX. April 16-17.

Larson, H., N. Kenney, and A. DiCostanzo. (2015). Evaluation of a feed additive mixture of direct fed microbials, prebiotics, and enzymes on in vitro true digestibility of feeds. Paper presented to ASAS/ADSA Midwestern section annual
regional meeting. Des Moines, IA. March 16-18.

Larson, H., I. Salfer, and M. Stern. (2014). Effect of Sulfur Content of Distillers Grains on Protein Digestibility in Ruminants. Poster presented to University of Minnesota Undergraduate Research Symposium. Minneapolis, MN. April 25.

*Authors contributed equally to this work.