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Related Experiment Videos

Effect of particle size on performance. 1. Corn

I Nir1, G Shefet, Y Aaroni

  • 1Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.

Poultry Science
|January 1, 1994
PubMed
Summary

Broiler diets using medium corn particle size improved growth performance. Particle size uniformity, measured by geometric standard deviation (GSD), also positively impacted broiler development.

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Area of Science:

  • Animal Science
  • Agricultural Engineering
  • Feed Science

Background:

  • Corn particle size is a critical factor in broiler feed formulation.
  • Optimizing particle size distribution can enhance nutrient utilization and animal performance.

Purpose of the Study:

  • To investigate the impact of different corn particle sizes on broiler performance.
  • To determine the optimal geometric mean diameter (GMD) and geometric standard deviation (GSD) for broiler diets.

Main Methods:

  • Corn was ground and sieved into coarse, medium, and fine fractions.
  • Five experimental diets were formulated with varying GMD and GSD values.
  • Broiler performance was evaluated from hatch to 7 days and 7 to 21 days of age.

Main Results:

  • The diet with medium corn particle size (GMD 0.769 mm) resulted in the best broiler performance.
  • Diets with lower GSD (higher particle size uniformity) showed improved performance.
  • Particle size similarity did not fully explain performance differences; medium particle size was superior.

Conclusions:

  • Medium corn particle size is optimal for broiler diets.
  • Particle size uniformity (low GSD) is crucial for enhancing broiler performance.
  • Feed processing methods should aim for controlled particle size distribution for improved feed efficiency.

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