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Comparative Growth Performance and Intestinal Morphological Development Between Liangshan Yanying Chicken and Arbor

Ziheng Sun1, Tao Li1, Chao Chen1

  • 1College of Animal Science, Xichang University, Xichang 615000, China.

Animals : an Open Access Journal From MDPI
|March 28, 2026
PubMed
Summary

Arbor Acres (AA) broilers show significantly better growth and intestinal development than Liangshan Yanying Chicken (YYJ). Early intestinal morphology is key to growth performance in chickens.

Keywords:
AA broilerLiangshan Yanying chickenfeed conversion ratiogrowth performanceintestinal morphologyvillus height

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Area of Science:

  • Poultry Science
  • Animal Physiology
  • Comparative Anatomy

Background:

  • Local chicken breeds like Liangshan Yanying Chicken (YYJ) often exhibit slower growth compared to commercial broilers.
  • Understanding early development differences is crucial for improving growth performance.

Purpose of the Study:

  • To compare growth performance and intestinal morphology between YYJ and Arbor Acres (AA) broilers.
  • To investigate the impact of early intestinal development on overall growth in chickens.

Main Methods:

  • 120 one-day-old male chicks of each breed (YYJ and AA) were reared for 28 days.
  • Measurements included body weight, feed intake, feed conversion ratio, and intestinal morphological indices.
  • Correlation analysis was performed between growth parameters and intestinal morphology.

Main Results:

  • AA broilers had 3.24 times higher body weight than YYJ at 28 days.
  • AA broilers exhibited significantly higher intestinal villus height and villus-to-crypt ratio.
  • Positive correlation found between body weight and average daily gain; negative correlation with feed conversion ratio.

Conclusions:

  • Early intestinal morphological development significantly influences chicken growth performance.
  • Differences in intestinal development may explain growth limitations in local chicken breeds like YYJ.
  • Findings support genetic improvement and nutritional strategies for YYJ.