Professional Experience

2004-present
Associate Professor
85% Research/15% Teaching

1998-2004
Assistant Professor
90% Research/10% Teaching

1993-1998, Kansas State University, Agricultural Research Center-Hays
Assistant Professor
100% Research Appointment

Research Interests

In addition to developing programs to increase efficiency of forage-based livestock production with an emphasis on protein and energy nutrition. Dr. Vanzant’s current research interests include the following:

• Assessing the influence of livestock on the environment
• Evaluating methodologies for continuous, remote health monitoring in both confined and free-ranging livestock.

Courses Taught

ASC 684 Advanced Ruminant Nutrition, Graduate lecture

ASC 378 Animal Nutrition and Feeding - Undergraduate lecture and lab; team taught with Dr. Merlin Lindemann

Selected Publications

Earing, J.E., B.D. Cassill, S.H. Hayes, E.S. Vanzant, and L.M. Lawrence. 2010. Comparison of in vitro digestibility estimates using the DaisyII Incubator to in vivo digestibility estimates in horses. Journal of Animal Science 88:3954-3963.

Koontz, A.F., S.W. El-Kadi, D.L. Harmon, E.S. Vanzant, J.C. Matthews, J.A. Boling, and K.R. McLeod. 2010. Effect of ractopamine on whole body and splanchnic energy metabolism in Holstein steers. Canadian Journal of Animal Science 90:77-85.

Liao, S.F., D.L. Harmon, E.S. Vanzant, K.R. McLeod, J.A. Boling, and J.C. Matthews. 2010. The Small Intestinal Epithelia of Beef Steers Differentially Express Sugar Transporter mRNA in Response to Abomasal vs Ruminal Infusion of Starch Hydrolysate. Journal of Animal Science 88:306-314, doi.10.2527jas.2009-1992.

Riddell, J.B., D.L. Harmon, E.S. Vanzant, and K.R. McLeod. 2010. Addition of a Bacillus based probiotic to the diet of preruminant calves: Influence on growth, health, and blood parameters. International Journal of Applied Research in Veterinary Medicine 8:78-85.

Taylor-Edwards, C., N. A. Elam, S. E. Kitts, K. R. McLeod, D. E. Axe, E. S. Vanzant, N. B. Kristensen, and D. L. Harmon. 2009. Influence of slow-release urea on nitrogen and portal-drained visceral metabolism in growing beef steers. J. Anim. Sci. 87:209-221.

Taylor-Edwards, C., N. A. Elam, S. E. Kitts, K. R. McLeod, D. E. Axe, E. S. Vanzant, N. B. Kristensen, and D. L. Harmon. 2009. Effects of slow-release urea on ruminal digesta characteristics and growth performance in beef steers. J. Anim. Sci. 87:200-208.

Liao, S. F., E. S. Vanzant, D. L. Harmon, K. R. McLeod, J. A. Boling, J. C. Matthews. 2008. Ruminal and abomasal starch hydrolysate infusions selectively decrease the expression of cationic amino acid transporter mrna by small intestinal epithelia of forage-fed beef steers. J. Dairy Sci. (In Press).

El Kadi, S. W., K. R. McLeod, N. A. Elam, S. E. Kitts, C. C. Taylor, D. L. Harmon, B. J. Bequette, and E. S. Vanzant. 2008. Nutrient net absorption across the portal-drained viscera of forage-fed beef steers: Quantitative assessment and application to a nutritional prediction model. J. Anim. Sci. 86: 2277-2287.

Liao, S. F., M. J. Alman, E. S. Vanzant, E. D. Miles, D. L. Harmon, K. R. McLeod, J. A. Boling, and J. C. Matthews. 2008. Basal expression of nucleoside transporter mrna differs among small intestinal epithelia of beef steers and is differentially altered by ruminal or abomasal infusion of starch hydrolysate. J. Dairy Sci. 91: 1570-1584.

Liao, S., E. Vanzant, J. Boling, and J. Matthews. 2008. Identification and expression pattern of cationic amino acid transporter-1 mRNA in small intestinal epithelia of Angus steers at four production stages. J. Anim. Sci.86:620-631.

Han, K. J., M. Collins, E. S. Vanzant, and C. T. Dougherty. 2006. Characteristics of baled silage made from first and second harvests of wilted and severely wilted forages. Grass  Forage Sci 61: 22-31.

Kitts, S.E., D. L. Harmon, E. S. Vanzant, and K. R. McLeod. 2006. Effects of chlortetracycline (CTC) and Revalor-S on the growth performance and carcass quality traits of finishing beef steers. J. Anim. Vet. Adv. 5: 70-76.

Agouridis, C. T., D. R. Edwards, S. R. Workman, J. R. Bicudo, B. K. Koostra, E. S. Vanzant, and J. L. Taraba. 2005. Streambank erosion associated with grazing practices in the humid region. Trans. ASAE. 48:181-190.

Agouridis, C. T., T. S. Stombaugh, S. R. Workman, B. K. Koostra, D. R. Edwards, and E. S. Vanzant. 2004. Suitability of a GPS collar for grazing studies. Trans. ASAE. 47:1321-1329.

Fisher, M. J., D. W. Bohnert, C. J. Ackerman, C. S. Schauer, T.DelCurto, A. M. Craig, E. S. Vanzant, D. L. Harmon, and F. N. Schrick. 2004. Evaluation of perennial ryegrass straw as a forage source for ruminants. J. Anim. Sci. 82:2175-2184.

Han, K. J., M. Collins, E. S. Vanzant, and C. T. Dougherty. 2004. Bale density and moisture effects on alfalfa round bale silage. Crop Sci. 44:914-919.

Fieser, B. G., and E. S. Vanzant. 2004. Interactions between supplement energy source and tall fescue hay maturity on forage utilization by beef steers. J. Anim. Sci. 82:307-318.

Howlett, C. M., E. S. Vanzant, L. H. Anderson, W. R. Burris, B. G. Fieser, and R. F. Bapst. 2003. Effect of supplemental nutrient source on heifer growth and reproductive performance, and on utilization of corn silage-based diets by beef steers. J. Anim. Sci. 81:2367-2378.

Dubbs, T. M., E. S. Vanzant, S. E. Kitts, R. F. Bapst, B. G. Fieser, and C. M. Howlett. 2003. Characterization of season and sampling method effects on measurement of forage quality in fescue-based pastures. J. Anim. Sci.81:1308-1315.

Invited Book Chapters

Cochran, R.C., W.K. Coblentz, and E.S. Vanzant. 2007. Animal methods for evaluating forage quality. In: Barnes, R.F., C.J. Nelson, K. J. Moore, and M. Collins (eds.). Forages. 6th ed Vol. II: The Science of Grassland Agriculture. Iowa State Press, Ames, IA.

Abstracts

Pescatore, A., S. Burk, E. Vanzant, M. Rossano, W. Silvia, and R. Harmon. 2011. The capstone course as a means of measuring assessment in an animal science program. The North American Colleges and Teachers of Agriculture (NACTA) conference. June14-18, 2011. Edmonton, Alberta.

Burk, S. K., M. G. Rossano, E. S. Vanzant, W. J. Silvia, and R. J. Harmon. 2011. Developing an assessment plan in an Animal Science department. Meeting of the Equine Science Society. May 31-June3, 2011. Murfreesboro, TN.

Martin, S. K., C. E. Conway, M.R. C. de Godoy, D. L. Harmon, E. S. Vanzant, S. Zicker, R.M. Yamka, and K.R. McLeod. 2010. Dietary magnesium alters urinary histamine excretion in domestic felines. J. Anim. Sci. 88(E-Suppl. 2):325.

Martin, S.K., C.E. Conway, M.R.C. de Godoy, D. L. Harmon, E.S. Vanzant, S. Zicker, R.M. Yamka, and K.R. McLeod. 2010. Dietary effects of dietary cation anion balance on histamine metabolism and urine acidity in domestic felines. J. Anim. Sci. 88(E-Suppl. 2):325.

Sollenberger, L.E. and E.S. Vanzant. 2009. Interrelationships between forage nutritive value and quantity in affecting animal performance. In: 2009 Annual meeting abstracts [CD-ROM]. ASA, CSSA, SSSA, Madison, WI

Lane, E. P., E. S. Vanzant, K. R. McLeod, and M. N. Steinman. 2009. The effect of dietary protein on immune response in receiving steers. J. Anim. Sci. 87(E-Suppl. 2):299.

Holder, V. B., S. el Kadi, J. M. Tricarico, E. Vanzant, K. M. McLeod, and D. L. Harmon. 2009. The effects of crude protein concentration and urea source on nitrogen metabolism in Holstein steers. J. Anim. Sci. 87(E-Suppl. 2):300.
Vanzant, E. S., and J. W. Lehmkuhler. 2009. Obtaining and applying meaningful forage digestibility estimates: forage-fed beef. J. Anim. Sci. 87(E-Suppl. 2):194.

Martin, S. K., M. R. C. de Godoy, D. L. Harmon, E. S. Vanzant, R. M. Yamka, K. G. Friesen, and K. R. McLeod. 2008. Diet transition time and stabilization of apparent digestibility in the feline. J. Anim. Sci. 86(E-Suppl. 2):167.

Kitts, S. E., S. W. El-Kadi, C. C. Taylor-Edwards, F. F. Korthaus, J. B. Cannon, A. F. Koontz, D. L. Harmon, E. S. Vanzant, and K. R. McLeod. 2008. The effects of dexamethasone and Revalor-S® on growth, carcass quality and visceral organ and fat mass of finishing beef steers fed cracked corn. J. Anim. Sci. 86(E-Suppl. 2):279.

Liao, S. F., D. L. Harmon, E. S. Vanzant, K. R. McLeod, J. A. Boling, and J. C. Matthews. 2008. Basal content of sugar transporter mRNA in small intestinal epithelia of beef steers is differentially increased by abomasal vs ruminal infusion of starch hydrolysate. J. Anim. Sci. 86(E-Suppl. 2):427.

Taylor-Edwards, C. C., D. B. Edwards, M. J. Doig, E. S. Vanzant, K. R. McLeod, J. A. Boling, J. C. Matthews, and D. L. Harmon. 2008. Proglucagon and GLP-2 receptor mRNA distribution in the ruminant gastrointestinal tract. J. Anim. Sci. 86(E-Suppl. 2):428.
Liao, S. F., E. S. Vanzant, D. L. Harmon, K. R. McLeod, J. A.Boling, and J. C. Matthews. 2008. Basal expression of four SLC1 (Na+-dependent glutamate transporter) mRNA by small intestinal epithelia of beef cattle differs and is altered by ruminal and abomasal infusion of starch hydrolysate. J. Anim. Sci. 86(E-Suppl. 2):561.

Korthaus, F. F., E. S Vanzant, G. Rentfrow, K. K. Kreikemeier, D. L. Harmon, and K. R. McLeod. 2008. Effects of distiller’s grain and probiotic on growth and arcass characteristics of finishing beef steers. J. Anim. Sci. 86(E-Suppl. 2):585.

Liao, S. F., E. S. Vanzant, D. L. Harmon, K. R. McLeod, J. A. Boling, and J. C. Matthews. 2008. Ruminal and abomasal infusion of starch hydrolysate differentially decreases expression of cationic amino acid transporter (CAAT) mRNA by small intestinal epithelia of forage-fed beef steers. J. Anim. Sci. 86(E-Suppl. 3):119.

McLeod, K. R., S. W. El- Kadi, D. L. Harmon, and E. S. Vanzant. 2007. Amino acid and energy metabolism by the portal-drained-viscera of beef steers: quantitative relationships with metabolizable energy intake. In: M. Ortigues, N. Miraux, and W. Brand-Williams (Eds.) Energy and Protein and Nutrition.EAAP Pub.No. 124, pp.343-344. Wageningen Academic Publishers, The Netherlands.

Kitts, S. E., C. C. Taylor-Edwards, D. B. Edwards, J. B. Cannon, A. F. Beckemeyer, K. E. Earing, D. L. Harmon, E. S. Vanzant, and K. R. McLeod. 2007. Effects of dexamethasone administration and Revalor-S® on growth, 

carcass characteristics and visceral organ and fat mass of nishing beef steers. J. Anim. Sci. 85(Suppl. 1):547.

Liao, S. F., M. J. Alman, E. S. Vanzant, E. D. Miles, D. L. Harmon, K. R. McLeod, J. A. Boling, and J. C. Matthews. 2007. Ruminal, but not abomasal, infusion of starch differentially increases expression of concentrative nucleoside transporter (CNT) mRNA by small intestinal (SI) epithelia of forage-fed beef steers. J. Anim. Sci. 85(Suppl. 1):343.