In a study published in the Polish Journal of Veterinary Sciences, Kazuhiko Koyama and colleagues explored how a commercial Gastrointestinal Biome (GB) prescription diet influences gut microbial composition and clinical outcomes in dogs suffering from chronic gastrointestinal (GI) disorders. The research included seven healthy dogs and sixteen dogs with GI disease, assessing changes before and after feeding the GB diet.
The study tracked body weight, Canine Inflammatory Bowel Disease Activity Index (CIBDAI), and fecal microbiota using 16S rRNA sequencing. Dogs with GI conditions exhibited marked improvement in clinical severity scores following the introduction of the GB diet, while their body weight remained stable. This improvement was particularly evident in reduced gastrointestinal inflammation and better stool consistency.
Microbiome analyses revealed significant differences between healthy and GI-affected dogs prior to treatment, including an overrepresentation of pro-inflammatory bacteria such as Escherichia-Shigella. After GB diet feeding, GI dogs showed increased levels of beneficial Turicibacter—a genus associated with intestinal stability—and a decrease in inflammatory bacteria. These changes suggest a microbial shift toward a healthier gut ecosystem.
The authors note that the prebiotic components of the GB diet likely supported the proliferation of beneficial bacteria, helping restore intestinal balance and reduce inflammation. While the study was relatively short-term, the results emphasize the therapeutic value of specialized diets in managing chronic intestinal diseases and improving canine welfare.
Koyama et al. recommend that future long-term studies examine how continued dietary management influences gut microbiota resilience and relapse prevention in dogs with chronic GI conditions.
Source: Koyama, K., Akiyama, R., Oda, H., Komiya, T., Gokita, K., Sako, T., & Mori, A. (2024). Effect of commercial prescription diets containing prebiotics on clinical signs and fecal microbiome in dogs with intestinal disease. Polish Journal of Veterinary Sciences, 27(4), 599–610. Published December 1, 2024.
