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United States Department of Agriculture

Agricultural Research Service

Research Project: IMPACT OF HOG AND TURKEY FARM PRODUCTION PRACTICES ON MOLECULAR EPIDEMIOLOGY OF CAMPYLOBACTER, SALMONELLA, AND EMERGING FOODBORNE PATHOGENS Title: The Type of Ventilation in Turkey Houses Influences the Prevalence of Salmonella in Birds

Authors
item Wesley, Irene
item Hong, Li - IOWA STATE UNIVERSITY
item Hongwei, Xin - IOWA STATE UNIVERSITY

Submitted to: American Society for Microbiology Meeting
Publication Type: Abstract Only
Publication Acceptance Date: May 30, 2008
Publication Date: May 30, 2008
Citation: Wesley, I.V., Hong, L., Hongwei, X. 2008. The type of ventilation in turkey houses influences the prevalence of salmonella in birds [abstract]. American Society for Microbiology Meeting. Paper No. 089.

Technical Abstract: Improved ventilation in poultry houses may lower the levels of generic E. coli and Salmonella in litter. The purpose of this study was to determine the prevalence of Campylobacter and Salmonella in two commercial turkey flocks reared in the same house but with differing ventilation systems in each separate half of the house. Flock One was raised with natural ventilation (NV); Flock Two was raised with mechanical ventilation (MV). Weekly sampling of air filters determined the presence of Salmonella in both flocks. One week prior to slaughter, cloacal swabs (n=50 per flock) were taken to determine the prevalence of Campylobacter. Drag swabs (n=8 per flock) were also collected to estimate the Salmonella status. At slaughter, the prevalence of Campylobacter and Salmonella was determined in ceca (n=75 per flock). For cloacal swabs, Campylobacter was isolated from the NV (86%) and MV (94%) birds. Salmonella was detected by real-time PCR in drag swabs of the NV (75%) and MV (12%) flocks. At slaughter, the Salmonella prevalence in the NV flock (5%) was significantly higher (P<0.05) than in the MV (0%) flock. No differences were seen in the prevalence of Campylobacter in ceca of the NV (96%) and MV (99%) birds. These data indicate that mechanical ventilation may reduce Salmonella but not Campylobacter prevalence in commercially reared turkeys.

Last Modified: 10/22/2014
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