The effect of diet change and insulin dysregulation on the faecal microbiome of ponies.

This research paper explores the impact of changes in diet, specifically the addition of pasture to a hay diet, on the faecal microbiome of both healthy and insulin-dysregulated ponies. The findings imply that the level of bacterial diversity and balance within the gut of these ponies can vary based on their diet and insulin level.

Objectives of the Study

• The primary objective of this study was to examine how adding pasture to a hay diet impacts the faecal bacterial microbiome in healthy and insulin-dysregulated ponies.
• Additionally, the research aimed to explore the potential link between insulin dysregulation and changes in the equine microbiome.

Methodology

• 16 ponies were chosen for this study. Faecal samples were collected from them before and after making a dietary change.
• The collected faecal samples were then used for bacterial 16S rRNA sequencing of the V3-V4 region to understand the bacterial diversity and composition.

Findings of the Study

• Firmicutes and Bacteroidetes were the dominant phyla in all faecal samples.
• The research found a decrease in the evenness or balance of bacterial populations after the addition of pasture to the diet.
• This decrease was significant when a pony was moderately insulin dysregulated, hinting at a possible connection between insulin dysregulation and bacterial balance.
• The evenness scores were found to have a negative correlation with the post-prandial glucagon-like peptide-1 concentration after a hay-only diet.
• The study also observed that dietary change explained only 3% of the variability in the faecal microbiome.

Conclusion

• The conclusion drawn from the research suggests that ponies with no observable metabolic health issues show greater stability in their microbial composition when their diet is altered subtly, in comparison to ponies which demonstrate moderate insulin dysregulation.
• Thus, the study points out the potential role of the equine microbiome in insulin dysregulation, although further research might be required to quantify this connection more accurately.