Host intestinal biomarker identification in a gut leakage model in broilers.

Area of Science:

• Poultry Science
• Animal Health
• Proteomics

Background:

• Intestinal health issues significantly impact the poultry industry, causing performance problems.
• Easy-to-measure biomarkers are needed to monitor subclinical intestinal conditions and evaluate control strategies.

Purpose of the Study:

• To identify host protein biomarkers indicative of intestinal inflammation and barrier damage in broilers.
• To establish quantifiable markers for assessing gut health in poultry.

Main Methods:

• Proteomic analysis of ileal and colonic content from broilers subjected to an experimental gut damage and inflammation model.
• Evaluation of macroscopic and microscopic gut parameters, including villus height, crypt depth, and T-lymphocyte infiltration.

Main Results:

• Challenge treatment led to poorer gut condition, villus shortening, increased crypt depth, and T-lymphocyte infiltration.
• Increased abundance of proteins associated with inflammation and serum leakage was observed in challenged broilers.
• Decreased abundance of brush border enzymes was noted in the intestinal content of challenged birds.

Conclusions:

• Candidate protein biomarkers were identified in broiler intestinal contents.
• These biomarkers show potential for field application in detecting gut barrier failure and inflammation in poultry.
• The findings support the development of objective tools for monitoring poultry intestinal health.