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College of Veterinary Medicine

David G. Renter

 Professor, Epidemiology
Director, Center for Outcomes Research and Epidemiology
The Dr. Robert MacDonald Professor of Veterinary Medicine

BS (1994), University of Nebraska at Kearney
DVM (1998), Kansas State University
PhD (2002), Kansas State University

Phone: (785)532-4801
Fax: (785)532-4851
Email: drenter@vet.ksu.edu


My research emphasizes the application and extension of epidemiologic principles and methods to enhance animal health, food safety and security, and related impacts on human health.  By utilizing appropriate experimental, observational, and synthesis research methods, my outcomes-focused research enables valid data-driven decisions that improve animal health/well-being, food safety, production efficiency, sustainability, and economic viability of animal health systems.  My recent research is primarily focused on applying epidemiologic approaches to generate industry-relevant knowledge that is used to address complex and contemporary problems in the beef industry.  As the Director of the Center for Outcomes Research and Epidemiology, I am engaged in strategic development and implementation of research and training initiatives that enhance a wide-range of population health programs. 

Instruction and Mentoring

I teach, mentor, and enable students to develop sustainable knowledge, skills and abilities so that they can solve current and future challenges in their professional roles. I emphasize scientific validity, research integrity, and evidence-based health management decisions. My primary teaching role is to develop and deliver professional and graduate student training in epidemiology, particularly as it relates to animal health and food safety. In addition to creating and delivering continuing education and advanced graduate student training, I have taught clinical epidemiology and population health management to professional students every year since becoming faculty, and have advised DVM, MPH, MS, and PhD students.

Selected Publications

Dixon A, Cernicchiaro N, Amachawadi R, Cull C, Shi X, Renter DG. Longitudinal characterization of prevalence and concentration of Shiga toxin-producing Escherichia coli serogroups in feces of individual feedlot cattle.  Foodborne Pathog Dis. (in press

Dennis E, Renter DG, Schroeder T. Net return distributions when metaphylaxis is used to control bovine respiratory disease in high health risk cattle. Transl An Sci. (in press

Cernicchiaro N, Oliveira ARS, Hoehn A, Cull CA, Noll LW, Shridhar PB, Nagaraja TG, Ives SE, Renter DG, Sanderson MW. Quantification of Bacteria Indicative of Fecal and Environmental Contamination from Hides to Carcasses. Foodborne Pathog Dis. 2019; 16(12): 844-855

Valencia D, Liebstein ML, Thompson P, Renter DG. A randomized trial comparing effects of respiratory disease metaphylaxis with gamithromycin or ceftiofur crystalline free acid on the health, performance, and economic return of auction market-derived stocker calves backgrounded on Missouri pastures. Bov Pract. 2019; 53(1): 10-17

Baruch J, Cernicchiaro N, Cull CA, Lechtenberg KF, Nickell JS, Renter DG. Performance of multiple diagnostic methods in assessing the progression of bovine respiratory disease in calves challenged with infectious bovine rhinotracheitis virus and Mannheimia haemolytica. J Anim Sci. 2019; 97(6): 2357-2367.

Amrine DE, McLellan JG, White BJ, Larson RL, Renter DG, Sanderson MW. Evaluation of three classification models to predict risk class of cattle cohorts developing bovine respiratory disease within the first 14 days on feed using on-arrival and/or pre-arrival information. Comput Electron Agr. 2019; 156: 439-446.

Chitakasempornkul K, Cha E, Renter DG, Sanderson MW, Jager A, Bello NM. Accounting for data architecture in structural equation modeling of feedlot performance outcomes. J Agric Biol Environ Stat. 2018; 23(4): 529-549.

Ekong PS, Sanderson MW, Shridhar PB, Cernicchiaro N, Renter DG, Bello NM, Bai J, Nagaraja TG. Bayesian estimation of sensitivity and specificity of culture- and PCR-based methods for detection of six major non-O157 Escherichia coli serogroups in cattle feces. Prev Vet Med. 2018; 161: 90-91.

Noll LW, Shridhar PB, Ives SE, Cha E, Nagaraja TG, Renter DG. Detection and quantification of seven major serogroups of Shiga toxin-producing Escherichia coli on hides of cull dairy, cull beef, and fed beef cattle at slaughter. J Food Prot. 2018; 81(8):1236-1244

Bello NM, Renter DG. Invited Review: Reproducible research from noisy data: revisiting key statistical principles for the animal sciences. J Dairy Sci. 2018; 101(7); 5679-5701

Dodd CC, Bechtol DT, Waite A, Corbin M, Renter DG. A randomized trial to compare the efficacy of tildipirosin and tulathromycin for initial treatment of bovine respiratory disease in naturally exposed commercial feedlot heifers. Bov Pract. 2018; 52(1): 39-45. 

Smith AB, Renter DG, Shi X, Cernicchiaro N, Sahin O, Nagaraja TG. Campylobacter prevalence and quinolone susceptibility in feces of preharvest feedlot cattle exposed to enrofloxacin for the treatment of bovine respiratory disease. Foodborne Pathog Dis. 2018; 15(6): 377-385

Bai J, Trinetta V, Shi X, Noll LW, Magossi G, Zheng W, Porter EP, Cernicchiaro N, Renter DG, Nagaraja TG. A multiplex real-time PCR assay, based on invA and pagC genes, for the detection and quantification of Salmonella enterica from cattle lymph nodes. J Microbiol Methods. 2018; 148:110-116

Dennis E, Schroeder T, Renter DG, Pendell D. Value of arrival metaphylaxis in U.S. fed cattle industry. J Agric Res Econ. 2018; 43(2): 233-250.

Cha E, Sanderson MW, Renter DG, Jager A, Cernicchiaro N, Bello NM. Implementing structural equation models to observational data from feedlot production systems. Prev Vet Med. 2017; 147:163-171.

Lubbers BV, Renter DG, Hesse RA, Peddireddi L, Zerse MT, Adams EA, Meyer BD. Prevalence of respiratory viruses and Mycoplasma bovis in U.S. cattle and variability among herds of origin, production systems and season of year. Bov Pract. 2017; 51(2):159-164.

Sturgess KL, Renter DG. Comparison of tulathromycin, tildipirosin, and tilmicosin for control of bovine respiratory disease in steers purchased from auction markers and fed in a Texas feedlot. Bov Pract. 2017; 51(1): 17-24. 

Ekong PS, Sanderson MW, Noll LW, Cernicchiaro N, Renter DG, Bello NM, Bai J, Nagaraja TG. Bayesian estimation of true prevalence, sensitivity and specificity of three diagnostic tests for detection of Escherichia coli O157 in cattle feces. Prev Vet Med. 2017; 148:21-27

Smith AB, Renter DG, Cernicchiaro N. Shi X, Nickell JS, Keil DJ, Nagaraja TG. A randomized trial to assess the effect of fluoroquinolone metaphylaxis on the fecal prevalence and quinolone susceptibilities of Salmonella and Campylobacter in feedlot cattle. Foodborne Pathog Dis. 2017; 14(10):600-607.

Shridhar PB, Noll LW, Cull C, Shi X, Cernicchiaro N, Renter DG, Bai J, Nagaraja TG. Spiral plating method to quantify the six major non-O157 Escherichia coli serogroups in cattle feces. J Food Prot. 2017; 17: 848-856.

Cull CA, Renter DG, Dewsbury DM, Noll LW, Shridhar PB, Ives SE, Nagaraja TG, Cernicchiaro N. Feedlot- and pen-level prevalence of enterohemorrhagic Escherichia coli in feces of commercial feedlot cattle in two major U.S. cattle feeding areas. Foodborne Pathog Dis. 2017; 14(6):309-317. 

Rogers KC, Miles DG, Renter DG, Sears JE, Woodruff JL. Effects of delayed respiratory viral vaccine and/or inclusion of an immunostimulant on feedlot health, performance, and carcass merits of auction-market derived feeder heifers. Bov Pract. 2016; 50(2):154-162. 

Engelken TJ, Roth JA, Kimura K, Renter DG, Meyer BD, Burdett WW, Hill KL. The effect of respiratory vaccine components and route of delivery on weight gain and inflammatory response in suckling beef calves. Bov Pract. 2016; 50(2):165-172. 

Chen S, Sanderson MW, Lee C, Cernicchiaro N, Renter DG, Lanzas C. Basic reproduction number and transmission dynamics of common serogroups of enterohemorrhagic Escherichia coliAppl Environ Microbiol. 2016; 82(18):5612-20

Cernicchiaro N, Ives SE, Edrington TS, Nagaraja TG, Renter DG. Efficacy of a Salmonella siderophore receptor protein vaccine on fecal shedding and lymph node carriage of Salmonella in commercial feedlot cattle. Foodborne Pathog Dis. 2016; 13(9): 517-525

DeMars Z, Biswas S, Amachawadi RR, Renter DG, Volkova VV.  Antimicrobial susceptibility of enteric Gram negative facultative anaerobe bacilli in aerobic versus anaerobic conditions. PLoS One. 2016; 11(5):e0155599

Shridhar PB, Noll LW, Shi X, Cernicchiaro N, Renter DG, Bai J, Nagaraja TG. Escherichia coli O104 in feedlot cattle feces: prevalence, isolation and characterization. PLoS One. 2016; 11(3):e0152101

Chopyk J, Moore RM, DiSpirito Z, Stromberg ZR, Lewis GL, Renter DG, Cernicchiaro N, Moxley RA, Wommack KE. Presence of pathogenic Escherichia coli is correlated with bacterial community diversity and composition on pre-harvest cattle hides. Microbiome. 2016; 4(1):9.  

Cernicchiaro N, Corbin M, Quinn M, Prouty F, Branine M, Renter DG. Meta-analysis of the effects of laidlomycin propionate, fed alone or in combination with chlortetracycline, and monensin sodium, fed alone or in combination with tylosin, on growth performance, health, and carcass outcomes in finishing steers in North America. J Anim Sci. 2016; 94(4):1662-76

Smith AB, Renter DG, Cernicchiaro N, Shi X, Nagaraja TG. Prevalence and quinolone-susceptibilities of Salmonella isolated from the feces of pre-harvest cattle within feedlots that use a fluoroquinolone to treat bovine respiratory disease. Foodborne Pathog Dis. 2016; 13(6):303-8.

Shridhar PB, Noll LW, Shi X, An B, Cernicchiaro N, Renter DG, Nagaraja TG, Bai J. Multiplex quantitative PCR assay for the detection and quantification of the six major non-O157 Escherichia coli serogroups in cattle feces. J Food Prot. 2016; 79(1):66-74.

Noll LW, Baumgartner WC, Shridhar PB, Cull CA, Dewsbury DM, Shi X, Cernicchiaro N, Renter DG, Nagaraja TG. Pooling of immunomagnetic separation beads does not affect detection sensitivity of six major serogroups of Shiga toxin-producing Escherichia coli in cattle feces. J Food Prot. 2016; 79(1):59-65.

Ison S, Delannoy S, Bugarel , Nagaraja TG, Renter DG, den Bakker H, Nightingale K, Fach P, Loneragan G. Targeted amplicon amplicon sequencing for SNP genotyping of attaching and effacing Escherichia coli O26:H11 cattle strains using a high-throughput library preparation technique. Appl Environ Microbiol. 2015; 82(2):640-9.

Theurer ME, Renter DG, White BJ. Using feedlot operational data to make valid conclusions for improving health management. Vet Clin North Am Food Anim Pract. 2015; 31(3):495-508.

Theurer ME, White BJ, Renter DG. Optimizing feedlot diagnostic testing strategies using test characteristics, disease prevalence, and relative costs of misdiagnosis. Vet Clin North Am Food Anim Pract. 2015; 31(3):483-93.

Noll LW, Shridhar PB, Shi X, An B, Cernicchiaro N, Renter DG, Nagaraja TG, Bai J. A four-plex real-time PCR assay, based on rfbE,stx1, stx2, and eae genes, for the detection and quantification of Shiga toxin-producing Escherichia coli O157 in cattle feces. Foodborne Pathog Dis. 2015; 12(9):787-794.

Noll LW, Shridhar PB, Dewsbury DM, Shi X, Cernicchiaro N, Renter DG, Nagaraja TG. A comparison of culture- and PCR-based methods to detect six major non-O157 serogroups of Shiga toxin-producing Escherichia coli in cattle feces. PLoS One. 2015; 10(8):e0135446.

Rogers KC, Miles DG, Hughes HD, Renter DG, Woodruff, J, Zuidhof S. Effect of initial respiratory viral-bacterial combination vaccine on performance, health, and carcass traits of auction-market derived feedlot heifers. Bovine Pr. 2015; 49(1): 43-47

Dewsbury DM, Renter DG, Shridhar PB, Noll LW, Shi X, Nagaraja TG, Cernicchiaro N. Summer and winter prevalence of Shiga toxin-producing Escherichia coli (STEC) O26, O45, O103, O111, O121, O145, and O157 in feces of feedlot cattle. Foodborne Pathog Dis. 2015; (8):726-732.

Stromberg ZR, Baumann N, Lewis GL, Cernicchiaro N, Renter DG, Marx DB, Phebus RK, Moxley RA 2015. Prevalence of enterohemorrhagic Escherichia coli O26, O45, O103, O111, O121, O145, and O157 on hides and carcass surfaces of beef feedlot cattle at harvest. Foodborne Pathog Dis. 2015; 12(7): 631-638.

Cull CA, Renter DG, Bello NB, Ives SE, Babcock AH. Performance and carcass characteristics of commercial feedlot cattle from a study of vaccine and direct-fed microbial effects on E. coli O157:H7 fecal shedding. J An Sci. 2015; 93(6): 3144-3151.

Ison S, Delannoy S, Bugarel M, Nightingale K, Webb H, Renter DG, Nagaraja TG, Loneragan G, Fach P. Genetic diversity and pathogenic potential of attaching and effacing Escherichia coli (AEEC) O26:H11 recovered from bovine feces in the United States. Appl Environ Microbiol. 2015; 81(11): 3671-3678.

Agga GE, Scott HM, Vinasco J, Nagaraja TG, Amachawadi RG, Bai J, Norby B, Renter DG, Dritz SS, Nelssen JL, Tokach MD.  Effects of chlortetracycline and copper supplementation on the prevalence, distribution, and quantity of antimicrobial resistance genes in the feces of weaned pigs. Prev Vet Med. 2015; 119(3-4):179-189.