Todd Callaway

Affiliation: Food and Feed Safety Research Unit, Agricultural Research Service, United States Department of Agriculture; College Station, Texas

Short Biography:
Dr. Todd R. Callaway grew up on a small horse and beef farm and received his B.S. and M.S. degrees from the University of Georgia in Animal and Dairy Science in 1993 and 1996 respectively.  He received his Ph.D. degree from Cornell University in 1999.  Dr. Callaway became a permanent scientist with the Agricultural Research Service of the USDA in 2000 and currently serves as a research microbiologist in the Food and Feed Safety Research Unit at the Southern Plains Agricultural Research Center, in College Station, Texas with a mission to reduce food-borne pathogens in animals prior to slaughter.  In conjunction with his Federal duties, Dr. Callaway is an adjunct Assistant Professor in the Department of Animal Science at Texas A&M University and at Mississippi State University.  Dr. Callaway received the American Society of Animal Science Early Career Research Award and the USDA/ARS Early Career Scientist of the Year Awards in 2007.  Dr. Callaway has published more than 175 refereed journal articles, more than 20 book chapters and 2 books on “Direct Fed Microbials” and “On farm Strategies to Control Foodborne Pathogens”.

Current Research: 

Developing methods to utilize or enhance the native microbiome and virome to reduce foodborne pathogens.  Utilizing native microflora as probiotic or competitive exclusion approaches to improving food safety on the farm.


  1. Tellez, G. A. Laukova, J. D. Latorre, X. Hernandez-Velasco, B. M. Hargis and T. R. Callaway.  2015.  Food-producing animals and their health in relation to human health.  Microb. Ecol. Health Dis. 26:25876-25886.
  2. Carroll, J. A., T. B. Schmidt, T. R. Callaway, J. G. Wilson, and J. R. Donaldson.  2015.  Use of a novel oleaginous microorganism as a potential source of lipids for weanling pigs.  J. Anim. Sci. (Submitted 15 September 2014).
  3. Cribbs, J. T., T.R. Young, M.A. Jennings, N.C. Burdick, J.A. Carroll, T.R. Callaway, T.B. Schmidt, B.J. Johnson, R.J. Rathmann.  2016.  Dehydrated citrus pulp alters feedlot performance of crossbred heifers during the receiving period and modulates serum metabolite concentrations pre- and post-endotoxin challenge.  J. Anim. Sci.  (Accepted 6 October 2015).
  4. Buntyn, J. O., T. B. Schmidt, D. J. Nisbet and T. R. Callaway.  2016.  The role of direct-fed microbials in conventional livestock production.  Ann. Rev. Anim. Biosci.  4:335-355. (Student at University of Nebraska under partial direction of Dr. Callaway)