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Related Experiment Videos

Broiler response to diet energy

S Leeson1, L Caston, J D Summers

  • 1Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.

Poultry Science
|April 1, 1996
PubMed
Summary

Broiler chickens precisely control feed intake to normalize energy consumption. Lowering dietary energy or increasing protein intake reduces carcass fat deposition in broiler chickens.

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Area of Science:

  • Animal Science
  • Poultry Nutrition
  • Avian Physiology

Background:

  • Broiler chickens' feed intake regulation is crucial for optimizing growth and carcass quality.
  • Understanding energy utilization is key to formulating efficient poultry diets.
  • Dietary energy levels significantly impact broiler performance and body composition.

Purpose of the Study:

  • To investigate broiler chickens' ability to regulate feed intake based on dietary energy levels.
  • To determine the effects of varying dietary energy on growth, carcass fatness, and breast meat yield.
  • To assess broiler responses to different feeding strategies, including ad libitum, restricted, and choice feeding.

Main Methods:

  • Male broiler chickens (30 birds/group, 3 replicates) were fed diets with 2,700–3,300 kcal ME/kg.
  • Experiment 1: Ad libitum feeding; Experiment 2: Restricted feed intake.
  • Experiment 3: Choice feeding with different energy level combinations.

Main Results:

  • Ad libitum feeding showed constant energy intake but reduced carcass fatness with lower energy diets.
  • Restricted feeding resulted in reduced growth and carcass fatness as dietary energy decreased.
  • Choice feeding demonstrated precise energy intake regulation, with lower energy choices tending to reduce carcass fat.

Conclusions:

  • Broiler chickens exhibit effective feed intake control to normalize energy intake.
  • Dietary energy concentration and protein-to-energy ratio influence carcass fat deposition.
  • Poultry nutrition strategies can manipulate energy intake to manage fat content in broilers.

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