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Int. J. Environ. Res. Public Health 2017, 14(1), 101; doi:10.3390/ijerph14010101

Infection Dynamics and Antimicrobial Resistance Profile of Salmonella Paratyphi B d-tartrate Positive (Java) in a Persistently Infected Broiler Barn

1
Veterinary Practice and Laboratory Wilms-Ellert-Klosterhalfen, Lohe 13, D-49429 Visbek, Germany
2
Institute of Food Quality and Food Safety, University of Veterinary Medicine, Bischofsholer Damm 15, D-30173 Hannover, Germany
3
Institute for Biometry, Epidemiology and Information Processing, University of Veterinary Medicine, Bünteweg 2, D-30559 Hannover, Germany
*
Authors to whom correspondence should be addressed.
Academic Editor: Jason K. Levy
Received: 9 November 2016 / Revised: 16 January 2017 / Accepted: 17 January 2017 / Published: 21 January 2017
(This article belongs to the Special Issue Emerging Infectious Disease (EID) Research, Management and Response)
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Abstract

The infection dynamics of S. Java were examined in three consecutive rearing periods on a broiler farm in Northwestern Germany which had been persistently infected with S. Java for more than five years. The barn was investigated for Salmonella occurrence after cleaning and disinfection to verify the persistent contamination of the broiler house with S. Java before the start of the first rearing cycle. Confirmation of Salmonella absence in day-old chicks (time-point 1) as well as early establishment of infection between days 5–7 (time-point 2) were confirmed by caecal swabs prepared for qPCR and classical microbiological methods. At three time-periods (between days 11–15 (time-point 3), days 25–28 (time-point 4), and days 38–40 (time-point 5)) caecal content was examined for colony forming units (CFU) Salmonella/g. In general, there was an increase in Salmonella Java load at time-point 4 compared to time-points 3 and 5. Therefore, we observed a bell-shaped course of infection resulting in higher rates of Salmonella CFU/g prior to prethinning than at final slaughter. The antimicrobial susceptibility testing revealed resistance to tetracycline, fluorquinolones, trimethoprim, and cefoxitin. View Full-Text
Keywords: Infection dynamics; S. Java; broilers; antimicrobial resistance; veterinary public health Infection dynamics; S. Java; broilers; antimicrobial resistance; veterinary public health
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Kloska, F.; Beyerbach, M.; Klein, G. Infection Dynamics and Antimicrobial Resistance Profile of Salmonella Paratyphi B d-tartrate Positive (Java) in a Persistently Infected Broiler Barn. Int. J. Environ. Res. Public Health 2017, 14, 101.

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