University of Kentucky College of Agriculture

Kyle McLeod, Ph.D.

Department of Animal Sciences
University of Kentucky
806 W. P. Garrigus Building
Lexington, KY 40546-0215

Phone:  (859) 257-2892
FAX:  (859) 257-3412
E-mailkmcleod@uky.edu


PUBLICATIONS

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

McLeod, K.R., R.L. Baldwin, VI, T.S. Rumsey, T.H. Elsasser, S. Kahl and M.N. Streeter. Effects of subtherapeutic chlortetracycline and dietary protein on plasma insulin-like growth factor-1 concentration in growing bovine. Journal of Animal and Veterinary Advances 2(9)531-535. 2003.

Harmon, D.L., and McLeod, K.R.. 2001. Glucose uptake and regulation by intestinal tissues: Implications and whole-body energetics. Journal of Animal Science, 79:E59-E72.

McLeod, K.R., R.L. Baldwin VI, D.L. Harmon, C.J. Richards, and W.V. Rumpler. 2001. Influence of ruminal and postruminal starch infusion on energy balance in growing steers. EAAP Publication No. 103. pp. 217-220. Proceedings, 15th International Symposium on Energy Metabolism, Snekkersten, Denmark.

Silvio, J., D.L. Harmon, K.L. Gross, and McLeod, K.R.. 2000. Influence of fiber fermentability on nutrient digestion in the dog. Nutrition, 16:289-295.

Bohnert, D.W., B.T. Larson, M.L. Bauer, A.F. Branco, D.L. Harmon, McLeod, K.R., and G.E. Mitchell Jr. 1999. Nutritional evaluation of poultry by-product meal as a protein source for ruminants: Small intestinal amino acid flow and disappearance in steers. Journal of Animal Science 77:1000-1007. 

Bohnert, D.W., B.T. Larson, M.L. Bauer, A.F. Branco, D.L. Harmon, McLeod, K.R., and G.E. Mitchell Jr. 1998. Nutritional evaluation of poultry by-product meal as a protein source for ruminants:  Effects on performance and nutrient flow and disappearance in steers.  Journal of Animal Science, 76:2474-2484. 

McLeod, K.R., M.L. Bauer, D.L. Harmon, C.K. Reynolds, and G.E. Mitchell Jr. 1997. Effects of exogenous somatostatin and cysteamine on net nutrient flux across the portal-drained viscera and liver during intraduodenal infusion of starch hydrolysate and casein. Journal of Animal Science, 75:3026-3037.

Harmon, D.L., K.A. Dawson, M.L. Bauer, McLeod, K.R., and B.T. Larson. 1996. Interactions of yeast culture and protein supplement for growing steers fed corn silage. pp. 45-54. IN: 1996 Beef Research Report (PR-395), Agricultural Experiment Station, College of Agriculture, University of Kentucky , Lexington , KY.

Bauer, M.L., D.L. Harmon, McLeod, K.R. and G.B. Huntington. 1995. Adaptation to small intestinal starch assimilation and glucose transport in ruminants. Journal of Animal Science, 73:1828-1838.

Cremin, J.D., Jr., McLeod, K.R., D.L. Harmon, A.L. Goetsch, L.D. Borquin and G.C. Fahey, Jr. 1995. Portal and hepatic fluxes in sheep and concentrations in cattle ruminal fluid of 3-(4-hydroxyphenyl)propionic, benzoic, 3-phenylpropionic, and trans-cin-namic acids. Journal of Animal Science, 73:1766-1775.

McLeod, K.R., D.L. Harmon, K.K. Schillo and G.E. Mitchell, Jr.  1995. Cysteamine-induced depletion of somatostatin in sheep: Time course of depletion and changes in plasma metabolites, insulin and growth hormone. Journal of Animal Science, 73:77-87.

McLeod, K.R., D.L. Harmon, K.K. Schillo, S.M. Hileman and G.E. Mitchell, Jr. 1995. Effects of cysteamine on pulsatile growth hormone release and plasma insulin concentrations in sheep. Comparative Biochemistry and Physiology, 112B:523-533.

ABSTRACTS

de Godoy, M. R. C., C. E. Conway, K. R. McLeod, and D. L. Harmon. 2011. Influence of feeding a fish oil containing diet to adult lean dogs: Effects on lipid and protein metabolism, postprandial glycemia, and body weight. J. Anim. Sci. 89: (E Suppl. 1) 286.

de Godoy, M. R. C., K. R. McLeod, and D. L. Harmon. 2011. Influence of feeding a fish oil containing diet to mature overweight dogs: Effects on lipid and protein metabolism, postprandial glycemia, and body weight. J. Anim. Sci. 89: (E Suppl. 1) 286.

Foote, A. P., D. L. Harmon, K.R. Brown, J. R. Strickland, K. R. McLeod, L. P. Bush, and J. L. Klotz. 2011. Endophyte-infected tall fescue seed extract induces constriction of bovine vasculature. J. Anim. Sci. 89: (E Suppl. 1) 49.

Taylor, C.C., N.A. Elam, S.E. Kitts, K.R. McLeod, D.E. Axe and D.L. Harmon. Influence of slow-release urea on nitrogen balance and nutrient absorption of steers. Journal of Animal Science 83:(Suppl. 1) 321. 2005.

Elam, N.A., C. Taylor, S.E. Kitts, K.R. McLeod, D.L. Harmon and E.S. Vanzant. Quantitative assessment of visceral energy metabolism in beef steers consumed graded levels of forage. Journal of Animal Science 83:(Suppl. 1) 52. 2005.

Gissendanner, S.J., N.M.P. Etienne, McLeod, K.R. and J.C. Matthews. The Patterns of EAAC1 and GLT-1 Glutamate Transporters and Glutamine Synthetase Expression by Skeletal Muscle and Adipose Tissues Change as Cattle Grow and Fatten. Oral presentation, March 2003, MANRRS 18th Annual National Career Fair and Training Conference, Atlanta, GA. 2003.

Rodriguez, S.M., K.C. Guimaraes, J.C. Matthews, K.M. McLeod, R.L. Baldwin and D.L. Harmon. Influence of abomasal carbohydrate on small intestinal sodium-dependent glucose co-transporter activity in steers. Journal of Animal Science 81(Suppl. 1):266. 2003.

Yamka, R.M., McLeod, K.R.. D.L. Harmon, H.C. Freetly and W.D. Schoenherr. Accounting for the proportion of alpha-amino nitrogen in crude protein improves metabolizable energy prediction in dry extruded dog foods. Journal of Animal Science 81(Suppl. 1):260. 2003.

Baldwin, R.L., VI, J. Klotz, R.N. Heitmann and McLeod, K.R.. Effects of intestinal development on calf growth. Journal of Animal Science 81(Suppl. 1):136. 2003.

Refereed Journal Articles

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

Reeder, T., G. Hibbard, K.R. McLeod, and D.L. Harmon. 2011. Dietary lysine: calorie ratios and their influence on nitrogen metabolism and digestibility in moderately obese mature dogs. American Journal of Animal and Veterinary Science. 6: 45-54.

Taylor-Edwards, C.C., D.G. Burrin, K.R. McLeod, J.J. Holst, and D.L. Harmon. 2011. Glucagon-like peptide-2 (GLP-2) increases small intestinal blood flow and mucosal growth in ruminating calves. Journal of Dairy Science. 94:888-898.

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.C., D.G. Burrin, N.B. Kristensen, K.R. McLeod, and D.L. Harmon. 2010. Glucagon-like peptide-2 (GLP-2) alters amino acid fluxes across the portal-drained viscera of ruminant calves. In: Energy and protein metabolism and nutrition EAAP publ. No. 127 G. M. Crovetto (Ed.). pp. 199-200.

Taylor-Edwards, C.C., D.G. Burrin, J.C. Matthews, K.R. McLeod, J.J. Holst, and D.L. Harmon. 2010. Expression of proglucagon and glucagon-like peptide-2 (GLP-2) receptor mRNA in the ruminant gastrointestinal tract and the influence of energy intake. Domestic Animal Endocrinology 29:181-193.

Xu, M., M. Rinker, K.R. McLeod, D.L. Harmon. 2010. Yucca schidigera extract decreases in vitro methane production in a variety of forages and diets. Animal Feed Science Technology 159:18-26.

Taylor-Edwards, C.C., N.A. Elam, S.E. Kitts, K.R. McLeod, D.E. Axe, E.S. Vanzant, N.B. Kristensen, and D.L. Harmon. Influence of slow-release urea on nitrogen balance and portal-drained visceral nutrient flux in beef steers.Journal of Animal Science 209-221. 2009.

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

Liao, S.F., D.L. Harmon, E.S. Vanzant, K.R. McLeod, J.A. Boling, and J.C. Matthews. 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. Published online: doi.10.2527jas.2009-2101. 2009.

Liao, S.F., E.S. Vanzant, D.L. Harmon, K.R. McLeod, J.A. Boling, and J.C. Matthews. Ruminal and abomasal starch hydrolysate infusions selectively decrease the expression of cationic amino acid transporter mRNA by small intestinale of forage-fed beef steers. Journal of Dairy Science 92:1124-1135. 2009.

El-Kadi, S.W., R.L. Baldwin, K.R. McLeod, N.E. Sunny, and B.J. Bequette. Glutamate is the major anaplerotic substrate in the tricarboxylic acid cycle of isolated rumen epithelial and duodenal mucosal cells from beef cattle. Journal of Nutrition 139(5):869-875. 2009.

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. 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. Journal of Dairy Science 91:1570-1584. 2008

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

Yamka, R.M., K.R. McLeod, D.L. Harmon, H.C. Freetly, and W D. Schoenherr. 2007. The impact of dietary protein source on observed and predicted metabolizable energy of dry extruded dog foods. Journal of Animal Science 85:204-212.

Tricarico, J.M., M.D. Abney, M.L. Galyean, K.C. Hanson, K.R. McLeod, and D.L. Harmon. 2007. The effects of an Aspergillus oryzae extract containing alpha-amylase activity on performance and carcass characteristics in finishing beef cattle. Journal of Animal Science 85:802-811.

McLeod, K.R., R.L. Baldwin, VI, M.B. Solomon, and R.G. Baumann. 2007. Influence of ruminal and postruminal carbohydrate infusion on visceral organ mass and adipose tissue accretion in growing beef steers. Journal of Animal Science 85:2256-2270.

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. Basal expression of nucleoside transport mRNA differs among small intestinal epithelia of beef steers and is differentially altered by ruminal or abomasal infusion of starch hydrolysate. Journal of Dairy Science doi:10.3168/jds.2007-0763.

Kitts, S.E., J.C. Matthews, K.K. Schillo, T.S. Rumsey, T.H. Elasser, S. Kahl, R.L. Baldwin, and K.R. McLeod. 2007. Effects of Chlortetracycline and Synovex-S® on Growth Rate and on Plasma Growth Hormone and Thyroid Hormone Concentrations Following Administration of Thyroid-releasing Hormone and GH-releasing Hormone in Beef Steers. Canadian Journal of Animal Science 87:327-341.

Baldwin, R.L., and K.R. McLeod. 2007. Influence of abomasal carbohydrates on subcutaneous, omental, and mesenteric adipose lipogenic and lipolytic rates in growing beef steers. Journal of Animal Science 2271-2282.

Kitts, S.E., D.L. Harmon, E.S. Vanzant, and K.R. McLeod. Effects of chlortetracycline (CTC) and Revalor-S on thegrowth performance and carcass quality traits of finishing beef steers. Journal of Animal and Veterinary Advances5: 70-76. 2006.

Baldwin, R.L., VI, K.R. McLeod, and A.V. Capuco. Visceral tissue growth and proliferation during the bovine lactation cycle. Journal of Dairy Science 87:2977-2986. 2004.

Baldwin, R.L., VI, K.R. McLeod, J.L. Klotz, and R.N. Hittmann. Rumen development, intestinal growth, and hepatic metabolism in the pre- and post- weaning ruminant. Journal of Dairy Science 87(E. Suppl.):E55-E65. 2004.

Moallem, U., G.E. Dahl, E.K. Duffy, A.V. Capuco, K.R. McLeod, R.L. Baldwin, and R.A. Erdman. Bovine somatotropin and rumen undegradable protein effects on organ and tissue weights and components of growth of prepubertal dairy heifers. Journal of Dairy Science 87:3869-3880. 2004.

Rodriguez, S.M., K.C. Guimaraes, J.C. Matthews, K.R. McLeod, R.L. Baldwin VI, and D.L. Harmon. Influence of abomasal carbohydrates on small intestinal sodium-dependent glucose co-transporter activity and abundance in steers. Journal of Animal Science 82:3015-3023. 2004.

Experiment Station Reports & Bulletins

Hanson, K.C., K.R. McLeod, and D.L. Harmon. Effect of supplemental energy source on performance of growing beef heifers fed drought-damaged corn silage. 2004 Beef Research Report. KY Agr. Report SR-2004-2. pp. 8. 2004.

Hanson, K.C., K.R. McLeod, J. Tricarico, and D.L. Harmon. Effect of exogenous amylase and corn type on performance and characteristics of finishing beef heifers. 2004 Beef Research Report. KY Agr. Report SR-2004-2. pp. 22. 2004.

Harmon, D.L., K.C. Hanson, S.E. Kitts, N.B. Kristensen, K.R. McLeod, and D.E. Axe. Influence of slow-release urea on digestion and metabolism of ruminants. 2004 Beef Research Report. KY Agr. Report SR-2004-2. pp. 29. 2004.

Kitts, S.E., K.C. Hanson, N.A. Elam, M.C. Newman, D.L. Harmon, and K.R. McLeod. Effects of corn type and forage level on growth performance and E.Coli shedding in finishing beef steers. 2004 Beef Research Report. KY Agr. Report SR-2004-2. pp. 9. 2004.

Kitts, S. E., J.C. Matthews, G.L. Sipes, T.S. Rumsey, T.H. Elsasser, R.L. Baldwin, Jr., and K.R. McLeod. Effects of oral chlortetracycline and steroid implant on growth performance and carcass merit of finishing beef steers. Beef Research Report. KY Agr. Report SR-2004-2. pp.1. 2004.