Enterococci from pannon white rabbits: detection, identification, biofilm and screening for virulence factors

Andrea Lauková, Viola Strompfová, Renata Szabóová, András Bónai, Zsolt Matics, Melinda Kovács, Monika Pogány Simonová

Abstract

Properties of enterococci isolated from the Hungarian breed Pannon White were studied to spread knowledge regarding the properties of microbiota in rabbits from the basic research standpoint and to select a beneficial candidate for application in husbandry. Faeces from 113 Pannon White rabbits (mostly maternal line and some paternal line) were collected. They were sampled from rabbits varying in age and sex (82 kits, 6 does, 6 bucks, 19 adult rabbits), which were aged 2 wk (14 suckling rabbits), 6 and 8 wk (68 weaning and post-weaning rabbits), adult rabbits (31, one year). Faecal mixtures were sampled into sterile packs with faeces from 5-6 animals in each. The total count of enterococci from these Pannon White rabbits reached, on av. 5.28±0.29 colony forming units/g (log10). Among the 19 enterococci, 14 E. faecalis and 5 E. faecium were detected using 3 identification methods. The enterococci were mostly resistant to antibiotics. They were non-haemolytic, Dnase and urease negative. They did not form biofilm. They were free of the hylEfm gene and IS16 genes; the most frequently detected genes were gelE, efaAfm, efaAfs. Based on these results, E. faecium EF9a was selected for further analysis.


Keywords

Pannon White; identification; enterococci; properties; rabbits

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References

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Probiotics and Antimicrobial Proteins  vol: 12  issue: 4  first page: 1555  year: 2020  
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 Universitat Politècnica de València

 

Official journal of the World Rabbit Science Association (WRSA)

 

e-ISSN: 1989-8886     ISSN: 1257-5011   https://doi.org/10.4995/wrs