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Exploring the association between microbiota and behaviour in suckling piglets.

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This study explored gut microbes and piglet behavior, finding specific bacteria linked to anxiety and exploration. Understanding the microbiota-gut-brain axis in young animals offers new insights.

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Area of Science:

  • Microbiology
  • Neuroscience
  • Animal Behavior

Background:

  • The gut microbiota influences brain function and behavior through the microbiota-gut-brain axis.
  • Limited research exists on the gut microbiota's role in early-life behavior in livestock.

Purpose of the Study:

  • To investigate the association between gut microbiota composition and behavior in suckling piglets.
  • To identify specific microbial taxa related to personality, anxiety, and exploratory behaviors.

Main Methods:

  • 16S rRNA gene sequencing was used for gut microbiota profiling at 2 and 4 weeks of age.
  • Behavioral tests included a backtest (personality), open field test (anxiety), and novel object test (exploration).
  • Multivariate statistical analyses were employed to correlate microbial data with behavioral outcomes.

Main Results:

  • Microbial groups like Coprococcus 3 and CAG-873 were associated with vocalizations (squeals) during the open field test.
  • Exploratory behavior in the novel object test showed significant associations with microbial genera such as Atopobium and Prevotella.
  • Individualized analyses revealed specific microbiota-behavior relationships within the piglet cohort.

Conclusions:

  • Gut microbiota composition is linked to specific behaviors in young piglets, highlighting the microbiota-gut-brain axis relevance.
  • The findings underscore the importance of considering individual microbial profiles when assessing animal behavior.
  • This research provides a foundation for future studies on gut health and behavior in swine.