Postnatal small intestinal morphological development in Cobb 500 broiler chickens.

Area of Science:

• Animal Science
• Avian Biology
• Gastroenterology

Background:

• Broiler chicken intestinal development is critical for nutrient absorption and growth.
• Intestinal morphology indices like villus height and crypt depth indicate absorptive capacity.

Purpose of the Study:

• To investigate postnatal small intestinal maturation in Cobb 500 broiler chickens.
• To analyze age-related changes in jejunal and ileal morphology.

Main Methods:

• Collected jejunal and ileal tissues from broiler chickens at 0, 7, 14, 21, and 28 days post-hatch.
• Measured intestinal morphology indices including villus height, crypt depth, and area.
• Analyzed data using a 5x2 factorial arrangement with age and intestinal section as factors.

Main Results:

• A positive linear effect of age was observed on villus height, perimeter, and area (P < 0.01).
• Villus height, area, and height to crypt depth ratio were greater in the jejunum than the ileum (P < 0.05).
• Intestinal morphological indices showed a slower growth rate relative to body weight from day 7 to 28.

Conclusions:

• Coordinated structural changes in the intestinal mucosa support rapid broiler chicken growth.
• This study provides a baseline for age-related intestinal maturation in broilers.
• Findings offer a framework for linking intestinal morphology with nutritional strategies.