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Derald J Holtkamp

Derald Holtkamp
Derald Holtkamp


Assistant Professor
Vet Diagnostic & Production Animal Med
(515) 294-9611
2233 Lloyd Vet Med Ctr
Expertise / Research Area
Dr. Holtkamp’s research focuses on biosecurity as well as the economics and risk management of swine disease with an emphasis on PRRSV and PEDV. He conducts outbreak investigations for PEDV and PRRSV and is developing standard procedures for conducting and reporting on outbreak investigations. He is directing the Production Animal Disease Risk Assessment Program (PADRAP) at Iowa State University focusing on development, management and promotion of disease risk assessment tools and databases of completed risk assessments held by the American Association of Swine Veterinarians.



VDPAM 309 Introduction to Production Animal Informatics

VDPAM 419 Advanced Swine Production Informatics
Selected Publications
Thomas P., Karriker L., Ramirez A., Zhang J., Ellingson J., Holtkamp D.J. 2015. Evaluation of Time and Temperature Sufficient to Inactivate PEDV in Swine Feces on Metal Surfaces. J. Swine Health Prod. J Swine Health Prod. 23:2:84-90.
Perez A., Davies P., Goodell C., Holtkamp D., Mondaca E., Poljak Z., Tousignant S., Valdes-Donoso P., Zimmerman J., Morrison R. 2015. Review of literature for epidemiology and control of Porcine Reproductive and Respiratory Syndrome virus (PRRSV) in North America: lessons learned and knowledge gaps. J. Am. Vet. Med (Accepted 11/3/2014).
Gerber, P. F., Gong, Q., Huang, Y. W., Wang, C., Holtkamp, D., & Opriessnig, T. 2014. Detection of antibodies against porcine epidemic diarrhea virus in serum and colostrum by indirect ELISA. The Veterinary Journal. 202:1, 33–36. doi: 10.1016/j.tvjl.2014.07.018.
Holtkamp D.J., Lin H., Wang C, Polson D.D. 2013. Evaluation of an objective risk scoring system for assessing the likelihood of virus introduction in porcine reproductive and respiratory syndrome virus-free breed-to-wean sow herds in the U.S.  Open Journal of Veterinary Medicine. 3 168-175.
Holtkamp D.J., Kliebenstein J.B., Neumann E.J., Zimmerman J.J., Rotto H., Yoder T.K., Wang C., Yeske P., Mowrer C. Haley C. 2013. Assessment of the economic impact of porcine reproductive and respiratory syndrome virus on United States pork producers. J. Swine Health Prod. 21:2 72-84.
Lin H., Wang C., Liu P., Holtkamp D.J. 2012. Construction of disease risk scoring systems using logistic group lasso: application to porcine reproductive and respiratory syndrome survey data, J. Appl. Stat. 40:4, 736-746. doi:10.1080/02664763.2012.752449
Bottoms K., Poljak Z., Dewey C., Deardon R., Holtkamp D.J., Friendship R. 2012.  Investigation of strategies for the introduction and transportation of replacement gilts on southern Ontario sow farms. BMC Vet. Res. 8:217. doi:10.1186/1746-6148-8-217.
Bottoms K., Poljak Z., Dewey C., Deardon R., Holtkamp D.J., Friendship R. 2012. Evaluation of external biosecurity practices on southern Ontario sow farms. Prev. Vet. Med. 109:1-2, 58-68. http://dx.doi.org/10.1016/j.prevetmed.2012.08.013
Holtkamp D.J., Lin H., Wang C., O’Connor A. 2012. Classifying herds according to whether they reported clinical PRRS outbreaks in the previous 3 years using data collected by the community of veterinarians who are members of the American Association of Swine Veterinarians. Prev. Vet. Med. 106:1, 42–52.
Holtkamp D.J., Polson D.D., Torremorell M. and committee members Morrison B. (chair), Classen D.M., Becton L., Henry S., Rodibaugh M.T., Rowland R.R., Snelson H., Straw B., Yeske P., Zimmerman J. 2011. Terminology for classifying swine herds by PRRS virus status. J. Swine Health Prod. 19:1 44-56.
Holtkamp D.J., Yeske P.E., Polson D.D., Melody J.L., Philips R.C. 2009 A prospective cohort study evaluating duration of breeding herd PRRS virus-free status and its relationship with measured risk. Prev. Vet. Med. DOI: 10.1016/j.prevetmed.2010.06.016.

Director of the Production Animal Disease Risk Assessment Program (PADRAP) and Swine Veterinary Internship Program (SVIP) at Iowa State University.

American Association of Swine Veterinarians (AASV)
PRRS Task Force Committee, 2012-present
Subcommittee to develop a position description for Director of Swine Health Programs (DSHP), 2010-2011
Communications Committee, 2006-present
PADRAP Advisory Committee, 2008-present
PRRS herd classification and definitions committee, 2009
North American PRRS Eradication Task Force, Ex Officio, 2006-2007          
American Veterinary Medical Association (AVMA)
Agricultural and Applied Economics Association (Formerly American Agricultural Economics Association) (AAEA)
Iowa Veterinary Medical Association (IVMA)
Iowa Veterinary Political Action Committee 2012-present
Legislative Committee 2006-present
I Vet PAC Auction Committee 2008
Iowa Pork Producers Association (IPPA)