Dianne BourassaDianna Bourassa

Assistant Professor/ Extension Specialist

Poultry Science Department


Ph.D., Biochemistry and Molecular Biology – Dissertation: Rhizobium lipid A very long chain fatty acid influence on structure
and function. University of Georgia
M.S., Poultry Science – Factors affecting salmonellae recovery from broiler carcasses treated with trisodium phosphate. University of Georgia
B.S., Poultry Science – University of Georgia

Professional Experience

Extension Specialist and Assistant Professor, Auburn University Department of Poultry Science, Auburn, AL
2001 – 2016
USDA-Agricultural Research Service, US National Poultry Research Center, Athens, GA

Professional Affiliations

International Association for Food Protection
Alabama Poultry and Egg Association
Poultry Science Association
Worlds Poultry Science Association
Auburn University Food Systems Institute – Core Faculty

Research Activities

Dr. Bourassa’s research focuses on poultry processing, microbiology, and food safety. Her poultry processing research topic areas have included stunning and animal welfare, the effects primary processing parameters on carcass microbiology, carcass sampling methods for foodborne pathogens, as well as the effects of on farm interventions on fully processed carcasses.


Extension Activities

Dr. Bourassa’s extension program includes support of the Alabama poultry industry in the area of poultry processing by providing education in essential areas such as stunning welfare, food safety, and regulatory compliance. Bourassa’s program also addresses poultry processing and food safety for the public and youth through programs including 4-H and FFA.

Courses Taught

Guest Lectures – POPH 7060 – Avian Diagnostic Microbiology, University of Georgia
Guest Lectures – POUL 4860 – Poultry Processing, University of Georgia
Guest Lectures – POUL 5110 – Poultry Processing, Auburn University

Select Publications

  • Bourassa, D.V., K.M. Wilson, C.R. Ritz, B.K. Kiepper, and R.J. Buhr. 2018. Evaluation of the addition of organic acids in the feed and/or water for broilers and the subsequent recovery of Salmonella Typhimurium from litter and ceca. Poult. Sci. 97:64-73.
  • Buhr, R.J., D.V. Bourassa, A. Hinton, Jr., B.D. Fairchild, and C.W. Ritz. 2017. Impact of litter Salmonella status during feed withdrawal on Salmonella recovery from the broiler crop and ceca. Poult. Sci. 96:4361-4369.
  • Bourassa, D.V., B.C. Bowker, H. Zhuang, C.E. Harris, and R.J. Buhr. 2017. Impact of alternative electrical stunning parameters on the ability of broilers to recover consciousness and meat quality. Poult. Sci. 96:3495-3501.
  • Gamble, G.R., M.E. Berrang, R.J. Buhr, A. Hinton, Jr., D.V. Bourassa, K.D. Ingram, E.S. Adams, P.W. Feldner, and J.J. Johnston. 2017. Neutralization of bactericidal activity related to antimicrobial carryover in broiler carcass rinse samples. J. Food Prot. 80:685-691.
  • Bourassa, D.V., E.L. Kannenberg, D.J. Sherrier, R.J. Buhr, and R.W. Carlson. 2017. The lipopolysaccharide lipid A long chain fatty acid is important for Rhizobium leguminosarumgrowth and stress adaptation in free-living and nodule environments. MPMI 30:161-175.
  • Bourassa, D.V., K.M. Wilson, L.N. Bartenfeld, C.E. Harris, A.K. Howard, K.D. Ingram, A. Hinton, Jr., M.E. Berrang, G.R. Gamble, J.G. Frye, C.R. Jackson, and R.J. Buhr. 2017. Carcass orientation and drip time affect potential surface water carryover for broiler carcasses subjected to a post-chill water dip or spray. Poult. Sci. 96:241-245.
  • Gamble, G.R., M.E. Berrang, R.J. Buhr, A. Hinton, Jr. D.V. Bourassa, J.J. Johnston, K.D. Ingram, E.S. Adams, and P.W. Feldner. 2016. Effect of simulated sanitizer carryover on recovery of Salmonella from broiler carcass rinsates. J. Food Prot. 79:710-714.
  • Jones, D.R., J. Guard, R.K. Gast, R.J. Buhr, P.J. Fedorka-Cray, Z. Abdo, J.R. Plumblee, D.V. Bourassa, N.A. Cox, L.L. Rigsby, C.I. Robison, P. Regmi, and D.M. Karcher. 2016. Influence of commercial laying hen housing systems on the incidence and identification of Salmonella and Campylobacter. Poult. Sci. 95:1116-1124.
  • Wilson, K.M., D.V. Bourassa, A.J. Davis, M.E. Freeman, and R.J. Buhr. 2016. Evaluation of the addition of charcoals to broiler diets on the recovery of Salmonella Typhimurium during grow-out and processing. Poult. Sci. 95:694-704.
  • Bourassa, D.V., J.M. Holmes, J.A. Cason, N.A. Cox, L.L. Rigsby, and R.J. Buhr. 2015. Prevalence and serogroup diversity of Salmonella for broiler neck skin, whole carcass rinse, and whole carcass enrichment sampling methodologies following air or immersion chilling. J. Food Prot. 78:1938-1944.
  • Bartenfeld, L.N., D.L. Fletcher, J.K. Northcutt, D.V. Bourassa, N.A. Cox, and R.J. Buhr. 2014. The effect of high level chlorine carcass drench on the recovery of Salmonella and enumeration of bacteria from broiler carcasses. Poult. Sci. 93:2893-2899.
  • Musgrove, M.T., C.B. Stephens, D.V. Bourassa, N.A. Cox, J.M. Mauldin, M.E. Berrang, and R.J. Buhr. 2014. Enterobacteriaceae and Salmonella recovered from non-sanitized and sanitized broiler hatching eggs. J. Appl. Poult. Res. 23:516-522.
  • Webb, M.L., J.L. Spickler, D.V. Bourassa, N.A. Cox, J.L. Wilson, and R.J. Buhr. 2014. Recovery of Salmonella serovar Enteritidis from inoculated broiler hatching eggs using shell rinse and shell crush sampling methods. Poult. Sci. 93:2117-2122.
  • Cox, N.A., R.J. Buhr, D. Smith, J.A. Cason, L.L. Rigsby, D.V. Bourassa, P. Fedorka-Cray, and D.E. Cosby. 2014. Sampling naturally contaminated broiler carcasses for Salmonella by three different methods. J. Food Prot. 77:493-495.
  • Buhr, R.J., J.M. Walker, D.V. Bourassa, A.B. Caudill, B.H. Kiepper, and H. Zhuang. 2014. Impact of broiler processing scalding and chilling profiles on carcass and breast meat yield. Poult. Sci. 93:1534-1541.
  • Zhuang, H., B.C. Bowker, R.J. Buhr, D.V. Bourassa, and B.H. Kiepper. 2013. Effects of broiler scalding and chilling methods on quality of early-deboned breast fillets. Poult. Sci. 92:1393-1399.