University of Kentucky College of Agriculture

Jeffrey W. Lehmkuhler, Ph.D.

Associate Extension Professor & Extension Beef Cattle Specialist

Department of Animal & Food Sciences
University of Kentucky
810 W. P. Garrigus Building
Lexington, KY 40546

Phone:  (859) 257-2853
Fax: (859) 257-3412

Position Description

Provide science-based, practical information related to beef cattle nutrition and management to the beef industry in the state and region allowing individuals to make better informed decisions.  Duties include the following: Develop educational resources & disseminate information; Plan and organize applied research; Collaborate with county-based extension personnel and provide beef-related support; Engage with a team of beef specialists, agents and industry personnel to develop strategies to keep Kentucky’s beef industry economically viable.


December 2001   University of Missouri  Doctor of Philosophy  

Feedlot Cattle Responses to Ruminally Undegradable Protein
Dr. Monty Kerley, Major Professor

May 1999   University of Missouri Master of Science 
    Comparison of Continuous and Rotational Grazing Silvopastoral Systems
Dr. Monty Kerley, Major Professor
May 1996   Purdue University Bachelor of Science 

Positions Held


Undergraduate research assistant and laboratory manager of ruminant nutrition lab
Purdue University

(Dr. Mike Cecava, faculty supervisor)

1995-1996   Undergraduate research assistant
Purdue University
(Dr. Mike Neary, faculty supervisor)

1996-2001   Graduate Research Assistant
Division of Animal Sciences
University of Missouri, Columbia

2001-2008   Assistant Professor
Department of Animal Sciences
University of Wisconsin, Madison (80% Extension, 20% Research)

2008-Current   Assistant Professor
Department of Food and Animal Sciences
University of Kentucky, Lexington (100% Extension)

Papers Published in, or Accepted by, Refereed Journals

  • Lehmkuhler, J.W., M.S. Kerley, H.E. Garrett, B.E. Cutter, and R.L. McGraw,.  1998-1999.  Comparison of continuous and rotational silvopastoral systems for established walnut plantations in southwest Missouri, USA.  Agroforestry Systems. 44(2-3):  267-279.
  • Fu, C.J., E.E.D. Felton, J.W. Lehmkuhler, and M.S. Kerley.  2001.  Ruminal peptide concentration required to optimize microbial growth and efficiency.  J. Anim. Sci.  79:1305-1312.
  • Lehmkuhler, J.W., E.E.D. Felton, D.A. Schmidt, K.J. Bader, H.E. Garrett, and M.S. Kerley.  2003.  Tree protection methods during the silvopastoral-system establishment in midwestern USA: Cattle performance and tree damage.  Agroforestry Systems: 59:35-42.
  • Fu C.J., J.H. Porter, E.E. Felton, J.W. Lehmkuhler, and M.S. Kerley.  2003.  Pre-harvest factors influencing the acid resistance of Escherichia coli and E. coli O157:H7.  J Anim Sci. 81(4):1080-7.
  • Lehmkuhler, J.W. and M.S. Kerly.  2007.  Bloodmeal and fishmeal as a source to increase the amino acid to energy ratio in steer receiving diets.  Prof. Anim. Sci. 23:253-259.
  • Lehmkuhler, J.W., M.H. Ramos, and K.A. Albrecht.  2007.  Cupplant silage as a replacement for corn silage in beef cattle diets.  Online.  Forage and Grazinglands doi:10.1094/FG-2007-1107-01-RS.
  • Brokman, A.M. and J.W. Lehmkuhler.  2007.  Increasing dietary phosphorus level for finishing yearling Holstein steers.  Asian-Aust. J. Anim. Sci. 21: 220-224.
  • Brokman, A.M., J.W. Lehmkuhler, and D.J. Undersander.  2008.  Reducing phosphorus inputs for grazing Holstein steers.  J. Anim. Sci. 86:712-719.
  • Lehmkuhler, J.W. and M.H. Ramos.  2008.  Comparison of dairy beef genetics and dietary roughage levels.  J. Dairy. Sci. 91:2523-2531.

Invited Published Papers

  • Lehmkuhler, J.W. 2002.  Mineral and vitamin supplementation of the cow-calf herd.  Proc. VI. Course on New Approaches in the Production and Reproduction of Bovine, Brazil.  pp.135-142.
  • Lehmkuhler, J.W. 2002.  Strategies to decrease slaughter age.  Proc. VI. Course on New Approaches in the Production and Reproduction of Bovine, Brazil.  pp.127-134.
  • Lehmkuhler, J.W.  2005.  Grazing Holstein steers:  An alternative to the calf-fed model.  Proc. Managing and Marketing Quality Holstein Steers, Rochester, MN.  pp.185-197.
  • Lehmkuhler, J.W.  2006.  Livestock performance and general considerations for cattle management in temperate silvopastoral systems.  Proc. Of the 60th Southern Pasture & Forage Crop Improvement Conference.  Auburn, AL.

Abstracts submitted to scientific meetings (2005 to present)

  • Lehmkuhler, J.W., W.R. Burris, S.R. Smith, Jr., G. Halich, K. Burdine, M. Arnold, S.F. Higgins, A. Gumbert, and K. Laurent.  2014.  The Kentucky master stocker program. Journal of Animal Science. 92 (abstr. 290).
  • Stewart, L., J.W. Lehmkuhler, M.H. Poore, J.D. Arthington, and D.L. Rankins.  2014.  Beef programming across state lines: SERA 41 webinars.  Journal of Animal Science. 92 (abstr.24).
  • Brokman, A.M., J.W. Lehmkuhler, and D.J. Undersander.  2005.  Supplemental phosphorus removal for grazing Holstein steer.  ASAS Midwestern Sectional (abstr. 248).
  • Lehmkuhler, J.W., A.E. Crooks, and D.J. Undersander.  2005.  Supplementation of grazing Holstein steers with dried distillers grains in combination with monensin.  J. Anim. Sci. 83 (Suppl 2): 244(abstr.).
  • Lehmkuhler, J.W., M. Ramos, S.C. Arp, and J.R. Claus.  2006.  Comparison of Holstein, Jersey and Crossbred Twinner Steers.  J. Anim. Sci. 84 (Suppl 2): 316 (abstr.).
  • Ramos, M.H., J.W. Lehmkuhler, S.C. Arp, and K.A. Albrecht.  2006.  Investigating Silphium perfoliatum  (cupplant) silage for growing cattle.  J. Anim. Sci. 84 (Suppl 1): 304 (abstr.).
  • Lehmkuhler, J.W. and M. Ramos.  2007.  Response of yearling Holstein steers to ractopamine hydrochloride.  J. Anim. Sci. 85(Suppl. 2): 136(abstr.).

Extension Articles (2007 – present)

International Invited Presentations

  • Mineral and Vitamin Supplementation of the Cow-calf Herd.  2002.  Uberlandia, Brazil.
  • Strategies to Decrease Slaughter Age.  2002.  Uberlandia, Brazil.
  • 2008 World South Devon Congress:  Gaining the interest of an industry?.  July 14, 2008.  Kananaskis, Canada.