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    Prevalence, genotyping and risk factors of thermophilic Campylobacter spreading in organic turkey farms in Germany (2016)

    Art
    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Autoren
    Ahmed, Marwa Fawzy El Metwaly
    El-Adawy, Hosny
    Hotzel, Helmut
    Tomaso, Herbert
    Neubauer, Heinrich
    Kemper, Nicole
    Hartung, Joerg
    Hafez, Hafez Mohamed (WE 15)
    Quelle
    Gut pathogens; 8(28) — S. 1–9
    ISSN: 1757-4749
    Sprache
    Englisch
    Verweise
    URL (Volltext): http://gutpathogens.biomedcentral.com/articles/10.1186/s13099-016-0108-2
    DOI: 10.1186/s13099-016-0108-2
    Pubmed: 27257438
    Kontakt
    Institut für Geflügelkrankheiten

    Königsweg 63
    14163 Berlin
    +49 30 838 62676
    gefluegelkrankheiten@vetmed.fu-berlin

    Abstract / Zusammenfassung

    The need for organic food of animal origin has increased rapidly in recent years. However, effects of organic animal husbandry on food safety have not been rigorously tested especially in meat turkey flocks. This study provides for the first time an overview on the prevalence and genetic diversity of Campylobacter species (spp.) in five organic meat turkey farms located in different regions in Germany, as well as on potential risk factors of bacterial spreading. Thirty cloacal swabs as well as water samples and darkling beetles were collected from each flock and examined for the presence of Campylobacter by conventional and molecular biological methods. The isolates were genotyped by flaA-RFLP.

    Campylobacter spp. were detected in cloacal swabs in all 5 turkey flocks with prevalence ranged from 90.0 to 100 %. 13 cloacal swabs collected from birds in farm III and IV were harboured mixed population of thermophilic campylobacters. In total, from 158 Campylobacter isolated from turkeys 89 (56.33 %) were identified as C. coli and 69 (43.76 %) as C. jejuni. Three Campylobacter (2 C. jejuni and 1 C. coli) were detected in drinkers of two farms and 3 C. coli were isolated from darkling beetles of one farm. No Campylobacter were isolated from main water tanks. flaA-RFLP assay showed that turkey farms can harbour more than one genotype. In a single turkey two different genotypes could be detected. The genotypes of campylobacters isolated from water samples or beetles were identical with those isolated from turkeys. No effect was found of some environmental parameters [ammonia concentration (NH3), carbon dioxide concentration (CO2), relative humidity (RH) and air temperature)] on Campylobacter prevalence in organic turkey farms. Additionally, drinking water and darkling beetles might be considered as risk factors for the spreading of Campylobacter in turkey flocks.

    This study highlights the high prevalence and genotypic diversity of Campylobacter spp. isolated from organic turkey flocks. Further research is needed to assess other potential risk factors responsible for bacteria spreading in order to mitigate the spread of Campylobacter in organic turkey flocks by improving biosecurity control measures.