Influences of quorum-quenching probiotic bacteria on the gut microbial community and immune function in weaning pigs

Jonggun Kim, Jaepil Kim, Younghoon Kim, Sangnam Oh, Minho Song, Jee Hwan Choe, Kwang Youn Whang, Kwang Hyun Kim, Sejong Oh

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The aim of this study is to investigate the dynamic gut microbial diversity in weaning swine after administering feed supplemented with probiotic bacteria that specifically inhibit the activity of quorum molecules. Initially, the universal quorum molecule autoinducer-2 (AI-2) bioassay results indicated that AI-2 activity was profoundly inhibited in enterohemorrhagic Escherichia coli (EHEC) O157:H7 in the presence of Lactobacillus acidophilus strain 30SC cell extract, although the growth of EHEC was not affected. Based on plate counting results, bacterial community analysis revealed a specific reduction in coliforms compared to the control, whereas the population of lactobacilli increased in weaning swine in in vivo trials. Supplementation with L. acidophilus strain 30SC did not affect the counts of other communities, such as total aerobes and yeast/mold. In addition, PCR-denaturing gradient gel electrophoresis analysis showed a significant difference in the 16S rRNA gene products after administering L. acidophilus strain 30SC. Selected bands were sequenced, and most of them were identified as uncultured bacterium clones or a Lactobacillus- and Bifidobacterium-specific community. Therefore, our results indicate that quorum-quenching probiotic bacteria can significantly modulate the gut microbiota of swine and these beneficial effects can contribute to the improvement of performance and health in the gastrointestinal tract of weaning pigs.

Original languageEnglish
Pages (from-to)412-422
Number of pages11
JournalAnimal Science Journal
Issue number2
Publication statusPublished - 2018 Feb 1

Bibliographical note

Funding Information:
This work was supported by the Cooperative Research Program for Agriculture Science & Technology Development, Rural Development Administration, Republic of Korea (Project No. PJ01088202).

Publisher Copyright:
© 2017 Japanese Society of Animal Science


  • PCR-denaturing gradient gel electrophoresis (PCR-DGGE)
  • autoinducer-2
  • bacterial community
  • probiotic bacteria
  • quorum sensing

ASJC Scopus subject areas

  • General Medicine


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