Intestinal events and nutritional dynamics predispose Clostridium perfringens virulence in broilers

Area of Science:

• Veterinary Pathology
• Animal Nutrition
• Microbiology

Background:

• Clostridium perfringens (CPA) requires specific gastrointestinal conditions to proliferate and cause disease.
• Digestive dynamics, oxygen levels, and nutrient availability significantly influence CPA pathogenicity.

Purpose of the Study:

• To elucidate the factors contributing to Clostridium perfringens A (CPA) pathogenicity in the gastrointestinal system.
• To identify dietary and digestive strategies for mitigating CPA-induced enteritis and associated economic losses.

Main Methods:

• Analysis of digestive dynamics, digesta viscosity, and oxygen transfer in the small intestine.
• Investigation of CPA's interaction with the intestinal mucosa and its enzymatic activities.
• Evaluation of dietary interventions, including nonstarch polysaccharides and enzyme supplements (hemicellulases, amylase, phytase, protease).

Main Results:

• Reduced digestive dynamics and increased digesta viscosity create favorable anaerobic conditions for CPA.
• CPA utilizes glucosidase and proteolysis to erode the gut lining, leading to necrotic enteritis and potential cholangiohepatitis.
• Dietary interventions like hemicellulases reduce viscosity, while amylase, phytase, and protease limit nutritional support for CPA.

Conclusions:

• Intestinal physical dynamics and feed characteristics are critical in managing CPA colonization.
• Dietary strategies targeting digesta viscosity and nutrient availability can effectively control CPA pathogenicity.
• Mitigating CPA reduces liver condemnations, improves feed efficiency, and prevents growth loss and mortality.