Steven J. Bartle

 Research Director of Beef Cattle Institute

B.Sc, North Dakota State University
B.Sc ( Business), Hannibal LaGrange University
M.Sc, Montana State University
PhD (Ruminant Nutrition), Washington State University

Phone: 785-532-4259
Email: sjbartle@vet.ksu.edu

Research

Dr. Bartle’s research includes both university and feed industry experience in the areas of beef cattle nutrition and management. Dr. Bartle’s early research dealt with nutrition and reproduction in beef cows. While at Texas Tech University, Dr. Bartle’s research focused on feedlot cattle, and ranged from new implant technologies to dietary roughage management. In industry, the focus was on the supplementation of beef cattle including nutritional needs, economic viability, and intake control. At the Beef Cattle Institute, Dr. Bartle’s research is at the intersection of beef cattle nutrition, health, and welfare. Examples include the mediation of heat stress, the feeding of intact bulls, welfare issues, and the sustainability of individual beef operations and the beef industry.

Teaching

Dr. Bartle mentors Beef Cattle Institute graduate students in their research experience from experimental design and protocol preparation, through peer-reviewed publication.

Selected Publications

  1. Schaffer, A.P., R.L. Larson, N. Cernicchiaro, G.A. Hanzlicek, S.J. Bartle, and D.U. Thomson. The association between calfhood bovine respiratory disease complex and subsequent departure from the herd, milk production, and reproduction: an observational, retrospective study. Submitted to J. Dairy Sci.
  2. Thomson D.U., R. S. Swingle, M. Branine, S. J. Bartle, D. A.Yates. Comparison of receiving programs using decoquinate in combination with chlortetracycline on growth performance, health and carcass characteristics in growing-finishing cattle. Accepted by Bovine Practitioner
  3. Frese, D.A., C.D. Reinhardt, S.J. Bartle, D.N. Rethorst, B. Bawa J.D. Thomason, G.H. Loneragan, and D.U. Thomson. Effect of ractopamine hydrochloride and zilpaterol hydrochloride on the electrocardiogram and blood chemistry in finishing steers. Submitted to J. Anim. Sci.
  4. Rezac. D.J. D.U. Thomson; M.G. Siemens; F.L. Prouty, C.D. Reinhardt, S.J. Bartle. 2014. A survey of gross pathology conditions in cull cows at slaughter in the Great Lakes region of the U.S. J. Dairy Sci. 97:4227-4235
  5. Rezac, D.J., D.U. Thomson, S.J. Bartle, J.B. Osterstock, F.L. Prouty, C.D. Reinhardt. 2014 Prevalence, severity, and relationships of multiple gross pathologies measured at slaughter in beef cattle. J. Anim. Sci. 92:2595
  6. Bartle, S.J., R.L. Preston and M.F. Miller. 1994. Dietary energy source and density: Effects of roughage source, roughage level, tallow level and steer type on feedlot performance and carcass characteristics. J. Anim. Sci. 72:1943.
  7. Bartle, S.J., R.L. Preston, R.E. Brown and R.J. Grant. 1992. Trenbolone acetate/estradiol combinations in feedlot steers: dose-response and carrier. J. Anim. Sci. 70:1326.
  8. Bartle, S.J., J.R. Males and R.L. Preston. 1984. Effect of energy intake on the postpartum interval in beef cows and the adequacy of the cow's milk production for calf growth. J. Anim. Sci. 58:1068.