1. Evaluate novel chemicals, operational protocols, and sampling methodologies used during poultry production and processing of broilers for the reduction and/or control of foodborne pathogens. Develop a model or assay that can evaluate the effectiveness of interventions on the reduction of the prevalence or pathogen load of foodborne pathogens through production and processing (effectiveness of interventions). 1.1. Assessment of novel chemical sprays, brushes, intermittent scalding / defeathering on decontamination of Salmonella and Campylobacter from floor pen challenged broilers through processing following immersion chilling. 1.2. Develop a day-of-processing challenge model for the RRC pilot processing. 1.3. Evaluate the efficacy of novel combination chemical sanitizers on the removal of Salmonella from hatching eggs and the progressive cleanliness through single stage setters/hatcher systems to the broiler growout farm.
2. Identify and evaluate specific risk factors in the production and management, transport, or processing environments that are correlated with bird/egg contamination of foodborne pathogens. Evaluate how these risk factors affect the movement and persistence of foodborne pathogens in poultry and poultry products and develop potential intervention and control strategies. 2.1. Evaluate feeding programs for broilers during brooding and rearing that promote resistance to Salmonella and Campylobacter colonization and diminish flock persistence of these pathogens at slaughter age. 2.2. Evaluate pullet feed restriction and distribution programs that promote resistance to Salmonella and Campylobacter colonization and diminish persistence with the onset of lay.
Impact of broiler processing scalding and chilling profiles on carcass and breast meat yield
Buhr RJ, Walker JM, Bourassa DV, Brooke CA, Brian KH, Zhuang H.
Poultry Sci. 2014 Jun;93(6):1534-41.
Sampling naturally contaminated broiler carcasses for Salmonella by three different methods
Cox Jr NA, Buhr RJ, Smith DP, Cason JA, Rigsby LL, Bourassa DV, Cray PJ, Cosby DE.
J Food Protect. 2014 Mar;3:352-521.
Survival of naturally occurring Campylobacter in refrigerated and frozen rinsate from a broiler carcass
Cox Jr NA, Richardson LJ, Berrang ME, Rigsby LL, Buhr RJ, Plumblee J, Cray PJ
J Food Safety. 2014 Jan 23;34(1):76-8.
The next generation of microbiological testing of poultry
Becker MM, Cox N, Livezey K, Wisniewski M, Doyle MP.
World Poultry Sci Proc. 2012;68:1-12.
Effect of sub-therapeutic levels of antimicrobials in feed on the intestinal carriage of Campylobacter and Salmonella in turkeys
Cox NA, Craven SE, Musgrove MT, Berrang ME, Stern NJ.
J Appl Poult Res. 2003;12(1):32-6.
Incidence and tracking of Clostridium perfringens through an integrated broiler chicken operation
Craven SE, Cox NA, Bailey JS, Cosby DE.
Avian Dis. 2003;47(3):707-11.
Impact of Pre-enrichment media pH on Salmonella detection - (Proceedings)
Comparison of US and EU Salmonella detection methods - (Trade Journal)
Cox Jr, N.A., Cason, J.A., Berrang, M.E., Hofacre, C., Cosby, D.E., Biggs, R., Wagener, S., Lammerding, A.M., Doyle, M.P. 2014. Comparison of US and EU Salmonella detection methods. WATT Poultry USA. Vol.15 No.1 p.28-30.
Evaluation of formic acid and propionic acid feed additives on environmental and cecal Salmonella Typhimurium in broilers - (Abstract Only)
Wilson, K.M., Ritz, C.W., Kiepper, B.H., Bourassa, D.V., Cox Jr, N.A., Buhr, R.J. 2014. Evaluation of formic acid and propionic acid feed additives on environmental and cecal Salmonella Typhimurium in broilers. International Poultry Scientific Forum. 93:(E-Suppl. 1) M34. p.111-112. 2014.
Salmonella and Campylobacter contamination of turkeys, from breeders to processed carcasses - (Proceedings)
Crespo Rodriguez, M.D., Grimes, J.L., Katharious, S., Cox Jr, N.A., Buhr, R.J., Smith, D.P. 2013. Salmonella and Campylobacter contamination of turkeys, from breeders to processed carcasses. Annual North Carolina Turkey Industry Days. Section 8 p.1-15.
Impact of Skip-a-Day and Every-Day Feeding Programs on the Colonization of Salmonella Typhimurium in Broiler Breeder Pullets - (Abstract Only)
Characterization of Campylobacter jejuni and coli strains isolated in turkeys - (Abstract Only)
Can the fertile egg spread Campylobacter from broiler hen to off spring - (Trade Journal)
Cox Jr, N.A., Richarson, L.J., Maurer, J.J., Berrang, M.E., Cray, P.J., Buhr, R.J., Byrd Ii, J.A., Lee, M.D., Hofacre, C.L., O'Kane, P.M., Lammerding, A.M., Clark, A.G., Thayer, S.G., Doyle, M.P. 2013. Can the fertile egg spread Campylobacter from broiler hen to off spring. WATT Poultry USA. 14(8):26-29.
Efficacy of chemical sprays to eliminate inoculated Salmonella from defeathered broiler breast skin - (Abstract Only)
Cox Jr, N.A., Buhr, R.J., Berrang, M.E., Bourassa, D.V., Rigsby, L.L., Oakley, B., Russell, S.M. 2013. Efficacy of chemical sprays to eliminate inoculated Salmonella from defeathered broiler breast skin. International Poultry Scientific Forum. January 29-31,2013. Atlanta, Georgia. P.55.
Salmonella prevalence in poultry varies greatly in emerging markets - (Abstract Only)
Alali, W.Q., Doyle, M.P., Cox Jr, N.A., Walls, I. 2012. Salmonella prevalence in poultry varies greatly in emerging markets. WATT Poultry USA. Vol.13:No.12p.18-26.
Impact of Feeding Systems and Vaccination Programs on Salmonella Enteritidis Colonization and Clearance of E. Coli In Broiler Broiler Breeders Pullets - (Abstract Only)
Stunning Systems for Poultry - (Proceedings)
Buhr, R.J. 2012. Stunning Systems for Poultry. World Poultry Congress Proceedings. Vol.68:Supplement 1 PL32 6 pages.
Mechanical Hatching Egg Sanitization: A Fresh Look - (Trade Journal)
Mauldin, J.M., Berrang, M.E., Cox Jr, N.A. 2003. Mechanical Hatching Egg Sanitization: A Fresh Look. WATT Poultry USA. 4:42-50.