Animal and Range Sciences Faculty

South Dakota State University
Department ofAnimal and Range Sciences

Aimee E. Wertz, Ph.D.
Associate Professor, Ruminant Nutrition

218 Animal Science Complex
South Dakota State University
Box 2170
Brookings, SD  57007
Phone: (605) 688-5461
FAX: (605) 688-6170
E-Mail:  Aimee.Wertz@sdstate.edu

                                                    

Education
Post-Doc, Iowa State University, Burroughs Fellowship:  2001-2003
Doctor of Philosophy, University of Illinois: 2001
Master of Science, University of Illinois: 1996
Bachelor of Science, Illinois State University: 1994

Appointment
Assistant Professor, Ruminant Nutrition; 75% Research, 25% Teaching

Teaching Responsibilities
AS 233, Applied Animal Nutrition and Feed Formulation Lab
AS 323, Advanced Animal Nutrition
AS 791, Graduate Vitamins and Minerals

Research Interest

Regulation of feed intake and composition of gain in beef cattle
Biofuel co-product utilization in ruminant livestock

Selected Organizations/Appointments
American Society of Animal Science

Honors
University of Illinois; H.H. Mitchell Graduate Nutrition Fellow; 1998-1999
Illinois State University; Cum Laude graduate; Outstanding Agriculture Senior

Publications
Peer-Reviewed Journal Articles
Wertz-Lutz, A. E., J. A. Daniel, J. A. Clapper, A. J. Smart, A. Trenkle, and D. C. Beitz. 2008. Prolonged feed intake restriction in beef cattle results in persistently elevated plasma ghrelin concentrations. J. Anim. Sci. 86:564-575. 

Carnagey, K. M., E. J. Huff-Lonergan, A. Trenkle, A. E. Wertz-Lutz, R. L. Horst, and D. C. Beitz. 2008. Use of 25-hydroxyvitamin D3 and vitamin E to improve the tenderness of beef from the longissimus dorsi of heifers. J. Anim. Sci 86:1649-1657. 

Wertz-Lutz, A. E., T. J. Knight, R. H. Pritchard, J. A. Daniel, J. A. Clapper, A. J. Smart, A. Trenkle, and D. C. Beitz. 2006. Bovine ghrelin fluctuates relative to nutritional status and influences feeding behavior. J. Anim. Sci. 84:3285-3300. 

Huls, T. J., A. J. Bartosh, J. A. Daniel, R. D. Zelinsky, J. Held, and A. E. Wertz-Lutz. 2006. Efficacy of feeding dried distiller’s grains with solubles as a replacement for soybean meal and a portion of the corn in a finishing wether diet. Sheep and Goat Res. J. 21:30-34. 

Wertz, A. E., A. Trenkle, T.J. Knight, E. J. Huff-Lonergan, R. Sonon, and D.C. Beitz. 2004. Use of 25-hydroxyvitamin D3 to improve beef tenderness. J. Anim. Sci. 82:1410-1418. 

Wertz, A. E., L. L. Berger, P. M. Walker, D. B. Faulkner, F. K. McKeith, and S. Rodriguez-Zas.  2002. Early-weaning and post-weaning nutritional management affect feedlot performance, carcass merit, and the relationship of 12th -rib fat, marbling score and feed efficiency among Angus and Wagyu heifers. J. Anim. Sci. 80:28-37.   

Wertz, A. E., L. L. Berger, P. M. Walker, D. B. Faulkner, F. K. McKeith, and S. Rodriguez-Zas.  2001. Early-weaning and post-weaning nutritional management affect feedlot performance of Angus x Simmental heifers, and the relationship of 12th -rib fat and marbling score to feed efficiency. J. Anim. Sci.  79:1660-1669. 

Wertz, A. E., L. L. Berger, D. B. Faulkner, and T. G. Nash. 2001. Intake restriction strategies and sources of energy and protein during the growing period affect nutrient disappearance, feedlot performance, and carcass characteristics of crossbred heifers. J. Anim. Sci. 79:1598-1610.