Consequences of Domestication on Gut Microbiome: A Comparative Analysis Between Wild Boars and Domestic Pigs
Da-Yun Bae | Sung-Hyun Moon | Taek Geun Lee | Young-Seung Ko | Yun-Chae Cho | Hamin Kang | Chan-Soo Park | Jung-Sun Kang | Yeonsu Oh | Ho-Seong Cho
The gut microbiota plays a vital role in the physiological functions and health of animals. Domestic pigs (<i>Sus scrofa domesticus</i>) and wild boars (<i>Sus scrofa scrofa</i>), which share a common ancestor, present a unique model for exploring the evolutionary changes in gut microbiota due to domestication. Comparing the gut microbiota of these two groups provides a unique opportunity to identify microorganisms that may have been lost or altered during domestication. This study employed 16S rRNA sequencing to compare the gut microbiota compositions of domestic pigs and wild boars, analyzing 69 fecal samples from both groups. Our results indicate significant differences in the taxonomic profiles of the gut microbiota between the two groups. Specifically, the genera <i>Bifidobacterium</i> and <i>Lactobacillus</i>, were found in higher abundance in wild boars. In contrast, domestic pigs exhibited a decreased variety of these potentially health-enhancing bacteria, likely due to factors such as simplified diets and antibiotic use. Functional gene analysis revealed that pathways related to carbohydrate metabolism, lipid metabolism, immune response, and environmental adaptability were more enriched in wild boars. These findings demonstrate significant differences in the gut microbiota composition between domestic pigs and wild boars, underscoring the impact of domestication on microbial diversity. Further research is necessary to explore the potential of transferring beneficial microbes from wild to domestic populations.
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