Swine gut microbiome associated with non-digestible carbohydrate utilization

Area of Science:

• Animal Science
• Microbiology
• Nutritional Science

Background:

• Non-digestible carbohydrates (NDCs) are essential dietary components in swine, influencing gut health and microbial ecology.
• Swine lack enzymes to digest NDCs, relying on gut microbes for fermentation and short-chain fatty acid production.
• Limited research exists on specific swine gut bacteria responsible for NDC degradation.

Purpose of the Study:

• To review major bacteria involved in fermenting various NDCs in the swine large intestine.
• To elucidate the roles of these bacteria in swine nutrition and health.
• To address the knowledge gap regarding NDC-degrading bacteria in swine.

Main Methods:

• Literature review of studies on swine gut microbiology and carbohydrate fermentation.
• Analysis of next-generation sequencing data to identify microbial compositions.
• Synthesis of current knowledge on bacterial fermentation of non-starch polysaccharides, resistant starch, and non-digestible oligosaccharides.

Main Results:

• Identified key bacterial groups, including Clostridium, Prevotella, and Bacteroides, involved in NDC fermentation.
• Highlighted the importance of microbial enzymes in breaking down cellulose, pectin, hemicellulose, resistant starch, and oligosaccharides.
• Demonstrated the link between NDC fermentation by specific bacteria and short-chain fatty acid production.

Conclusions:

• Understanding specific bacteria and their functions in NDC degradation is vital for optimizing swine nutrition and health.
• Further research is needed to fully characterize the metabolic capabilities of these bacteria.
• Targeting specific microbial communities could enhance nutrient utilization and improve swine well-being.