Laurie Lawrence, Ph. D.

Department of Animal Sciences
University of Kentucky
614 W. P. Garrigus Building
Lexington, KY 40546-0215
Phone:  (859) 257-7509
Fax:  (859) 257-2534
E-mail:  llawrenc@uky.edu

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Education:

Ph.D., Colorado State University (Animal Nutrition)

M.S., Colorado State University (Animal Nutrition)

B.S., Cornell University (Animal Science)

A.A.S., State University of New York Agricultural and Technical College at Delhi, Veterinary Technology

Research Interests: (see equine nutrition program page)

Equine Nutrition:

• nutrient requirements of exercising horses
• nutrient requirements of broodmares and foals
• equine digestive physiology
• pasture and forage utilization

Equine Exercise Physiology

• effect of exercise on metabolism
• interaction between exercise and diet

Selected Publications:

Book Chapters. (Recent)

O’Connor, C.I., L.M. Lawrence, A.C. St. Lawrence, K.M. Janicki, L.K. Warren, and S. Hayes. The effect of dietary fish oil supplementation on exercising horses. Journal of Animal Science 82 (10): 2978-2984. 2004.

Siciliano, P.D. and L.M. Lawrence. 1996. Vitamin E Nutrition in the Horse. In Vitamin E in Animal Nutrition and Management. M. Coehlo, Ed. BASF, Inc., Cherry Hill, N.J. p461- 472.

Lawrence, L.M. 1997. Feeding Horses. In, Feeds and Feeding, D.C. Church, Ed., Prentice Hall Englewood Cliffs, NJ.

Lawrence, L.M. 1997. Feeding the racehorse. The Veterinarian's Practical Reference to Equine Nutrition. K. Thompson, Ed. Purina Mills, St. Louis Mo. (p 7-14)

Lawrence, L.M. 1997. Feed supplements. The Veterinarian's Practical Reference to Equine Nutrition. K. Thompson, Ed. Purina Mills, St. Louis Mo. (p 87-92)

Journal Articles (Recent and selected)

Martin, T.L., T.R. Zentall, and L. Lawrence. Simple Discrimination Reversals in the Domestic Horse (Equus caballus): Effect of Discriminative Stimulus Modality on Learning to Learn. Journal of Applied Animal Behavior 101:328-338. 2006.

Purswell, J.L., R.S. Gates, L.M. Lawrence, J.D. Jacob, T.S. Stombaugh, and R.J. Coleman. Air exchange rate in a horse trailer during road transport. Transactions of the American Society of Agricultural and Biological Engineers 49(1):193-201. 2006.

Pratt, S., L.M. Lawrence, L.K. Warren and D.M. Powell. The effect of exercise on acetate clearance in horses. Journal of Equine Veterinary Science. 25:266-271; 2005.Pratt, S., L.M. Lawrence, L.K. Warren and D.M. Powell. The effect of exercise on acetate clearance in horses. Journal of Equine Veterinary Science. 25:266-271; 2005.

Lawrence, L., J. DiPietro, K. Ewert, D. Parrett, L. Moser and D. Powell. 1992. Changes in body weight and condition of mares during gestation and lactation. J. Eq. Vet. Sci. 12:355-358.

Lawrence, L., S. Jackson, K. Kline, L. Moser, D. Powell, and M. Biel. 1992. Observations on body weight and condition of horses competing in a 150-mile endurance ride. J. Eq. Vet. Sci. 12: 318-322.

Lawrence, L.M., L.V. Soderholm, A. Roberts, J. Williams and H. Hintz. 1993. Feeding status affects glucose metabolism in exercising horses. J. Nutr. 123:2152-2157.

Ruff, S.J., C.H. Wood, D.K. Aaron and L.M. Lawrence. 1993. A comparison of growth rates of normal thoroughbred foals and foals diagnosed with cervical vertebral malformation. J. Equine Vet. Sci 13:596-599

Danielsen, K., L. Lawrence, P. Siciliano, D. Powell and K. Thompson. 1995. Effect of different diets on weight loss and plasma variables in endurance exercised horses. Equine Exercise Physiol. 4: 372-377.

Healy, H.P., P.D. Siciliano and L.M. Lawrence. 1995. Effect of concentrate form on blood and gastric fluid variables in ponies. J. Equine Vet Sci 15:423-428.

Lawrence, L., H.F. Hintz, L.V. Soderholm, J. Williams and A. Roberts. 1995. Effect of time of feeding on metabolic response to exercise. Equine Vet. J. Supplement 18(Equine Exerc. Physiol. 4):392-395.

Lawrence, L.M., J. Williams, L.V. Soderholm, A.M. Roberts and H.F. Hintz. 1995. Effect of feeding state on the response of horses to repeated bouts of intense exercise. Equine Vet J 27:27-30.

Siciliano, P.D., L.M. Lawrence, K. Danielsen, D. Powell and K. Thompson. 1995. Effect of exercise conditioning and type of exercise on serum creatine kinase and aspartate amino-transferase activity. Equine Vet. J. Supplement 18(Equine Exerc. Physiol. 4):248-251.

Siciliano, P.D., A.L. Parker, and L.M. Lawrence. 1997. Effect of dietary vitamin E supplementation on the integrity of skeletal muscle in exercised horses. J. Anim. Sci. 75:1553

Cheung, T., L.K. Warren, L.M. Lawrence and K. Thompson. 1998. Electromyographic activity of the long digital extensor in the exercising thoroughbred horse. Equine Vet . J. 30:251.

Warren, L.K., L. M. Lawrence, A.L. Parker, T. Barnes and A.S. Griffin. 1998 The effect of weaning age on foal growth and radiographic bone density. J. Equine Vet Sci. 18:355.

Powell, D.M., L.M. Lawrence, T. Brewster-Barnes, B. Fitzgerald, L.Warren, S. Rokuroda, A. Parker and A. Crum. 1999. Diet composition and feeding state affect response to exercise in feed restricted horses. Equine Vet J. (Supplement 30):514-518

Warren, L.K., L.M. Lawrence and K.N. Thompson. 1999. The influence of betaine on untrained and trained horses exercising to fatigue. J. Anim. Sci. 77:677-684

Warren, L.K., L.M. Lawrence, T. Brewster-Barnes and D. M. Powell. 1999. The effect of dietary fiber on hydration status after dehydration with furosemide. Equine Vet J. Supplement 30: 508-513.

Pratt, S.E., L.M. Lawrence, T.Barnes, D. Powell, L.K. Warren. 2000. Measurement of ammonia concentrations in horse stalls. J. Equine Vet . Sci. 20:197-200.

Presentations/popular press:

Lawrence, L.M. 1996. Utilizing alfalfa hay in horse rations. Proc. XVI Kentucky Alfalfa Conference, Cave City, KY

Lawrence, L.M. 1996. The effect of exercise on the nutrient requirements of horses. Proc. Asian- australasian Association of the Animal Production Societies. Makuhari, Chiba, Japan

Lawrence, L.M. 1997. Vitamin nutrition of horses. Cornell Nutr. Conf., Rochester, NY. p190-195.

Lawrence, L.M. 1997. Supplemental vitamins, horse performance examined. Feedstuffs. Dec 1, 1997;p 14- 15 (adapted from "Vitamin nutrition of horses"; Cornell Nutr Conf.)

Lawrence, L.M. 1997. Feeding hay and pasture. Proc. Forages for Kentucky's Horses, Lexington KY

Powell, D.M. and L.M. Lawrence, L.M. 1997. Thyroid hormone. Equine Disease Quarterly. 6(1):3.

Lawrence, L.M. 1998. Alfalfa hay for horses. Proc. 28th Nat. Alfalfa Symp. Bowling Green KY p 105-110.

Lawrence, L.M. 1998. The best hay choices for horses. Proc. Tennessee Forage and Grasslands Conf. Knoxville, TN

Lawrence, L.M. 1999. Fescue toxicosis in foaling mares. Kentucky Horse Council Newsletter. Spring 1999.

Lawrence, L.M. 1999. Hot weather and your horse. Kentucky Horse Council Newsletter. Summer Issue.

Lawrence, L.M. 1999. Tips on buying hay. Kentucky Horse Council Newsletter. Fall 1999

Lawrence, L.M. 1999. The best hay choices for horses. Minnesota Forage Update. XXIV(4): 2-4

Lawrence, L.M. 1999. Effects of weaning on growing foals. Equine Disease Quarterly. 7(2):4-5

Lawrence, L.M. 1999. The benefits of warming up. World Equine Veterinary Review. 4(2):6-11

Lawrence, L.M. 2000. Advances and gaps in energy nutrition. Proceedings for the 2000 Equine Nutrition Conference for Feed Manufacturers. Lexington KY, p11-22.

Lawrence, L.M. 2000. Perspectives on selenium nutrition in horses. Proceedings of the Alltech Annual Symposium, Lexington KY, p183-196.

Other Research – Nonrefereed (Conferences and Symposia)

Cassill, B., L. Lawrence and M. Collins. Acceptability of red clover hay to horses. Proc. Equine Science Soc., Tucson, AZ, p360. 2005.

Cassill, B., S. Hayes, J. Ringler and L. Lawrence. Changes in serum markers of bone turnover during pregnancy and lactation. Proc. Equine Science Soc., Tucson, AZ, p63. 2005.

Ringler, J., B. Cassill, S. Hayes and L. Lawrence. Comparison of in vitro digestibility estimates using the Daisy II incubator to in vivo digestibility estimates. Proc. Equine Science Soc., Tucson, AZ, p43. 2005.

Ringler, J., B. Cassill, S. Hayes and L. Lawrence. Effect of incubation time on in vitro estimates of DM, NDF and ADF digestibility. Proc. Equine Science Soc., Tucson, AZ, p307. 2005.

Ringler, J., B. Cassill, S. Hayes, J. Stine and L. Lawrence. Grazing preferences of horses for different cool season grasses. Proc. Equine Science Soc., Tucson, AZ, p319. 2005.

Lawrence, L.M. and B. Cassill. Alfalfa hay for horses. Proc. 25th Kentucky Alfalfa Conference, Cave City, KY. 2005.

Lawrence, L.M. Trace minerals in equine nutrition. Proceedings of the Texas A&M Equine Nutrition Conference, College Station TX. Pp. 84-91. 2004.

Harbour, L.E., L.M. Lawrence, S.H. Hayes, C.J. Stine and D.M. Powell. Concentrate composition and form and glycemic response in horses. Proceedings 18th Equine Nutrition and Physiology Symposium, East Lansing MI p329. 2003.

Hayes, S.H., H. Werner and L.M. Lawrence. In vitro assessment of fiber digestion capacity in foals. Proceedings 18th Equine Nutrition and Physiology Symposium, East Lansing, MI p273. 2003.

Lawrence, L.M., J. Bicudo, J. Davis and E. Wheeler. Relationships between intake and excretion for nitrogen and phosphorus in horses. Proceedings 18th Equine Nutrition and Physiology Symposium, East Lansing, MI p306. 2003.

Lawrence, L.M., J. R. Bicudo and E. Wheeler. Horse manure characteristics literature and database review. International Symposium on Animal. Agricultural and Food Processing Waste, Raleigh, NC. 2003.

Powell, D.M., L.M. Lawrence and S. Hayes. Effect of dietary restriction and exercise on prolactin response to a thyrotropin releasing hormone challenge. Proceedings 18th Equine Nutrition and Physiology Symposium, East Lansing, MI, p268. 2003.

Peterson, C.J., L. Lawrence, R. Coleman, D. Powell, L. White, A. Reinowski, S. Hayes and L. Harbour. Effect of diet quality on growth during weaning. Proceedings. 18th Equine Nutrition and Physiology. Symposium., East Lansing, MI, p326. 2003.