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Related Experiment Videos

Nitric oxide controls feeding behavior in the chicken

Y H Choi1, M Furuse, J Okumura

  • 1Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Japan.

Brain Research
|August 15, 1994
PubMed
Summary

Nitric oxide (NO) inhibits food intake in chickens. Administering a nitric oxide synthase inhibitor (L-NNA) reduced food consumption, suggesting NO plays a role in controlling chicken feeding behavior.

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Area of Science:

  • Animal Science
  • Neuroscience
  • Physiology

Background:

  • Nitric oxide (NO) is a signaling molecule implicated in various physiological processes.
  • The role of NO in regulating feeding behavior, particularly in avian species, remains underexplored.

Purpose of the Study:

  • To investigate the influence of nitric oxide (NO) on food intake regulation in broiler chickens.
  • To determine if central NO signaling pathways modulate feeding behavior.

Main Methods:

  • Administration of L-NG-nitro-arginine methyl ester HCl (L-NNA), a nitric oxide synthase inhibitor, via intraperitoneal (i.p.) and intracerebroventricular (i.c.v.) routes.
  • Dose-response assessment of L-NNA's effect on food intake.
  • Investigating the effect of L-arginine (a precursor to NO) on L-NNA-induced changes in food intake.

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Main Results:

  • Intraperitoneal administration of L-NNA significantly decreased food intake in a dose-dependent manner.
  • Intracerebroventricular injection of L-NNA also dose-dependently inhibited food ingestion.
  • The inhibitory effect of L-NNA on food intake was partially reversed by intracerebroventricular administration of L-arginine.

Conclusions:

  • Central nitric oxide (NO) signaling pathways appear to play a significant role in controlling feeding behavior in chickens.
  • These findings contribute to understanding the neurobiological mechanisms regulating appetite in poultry.
  • Targeting NO pathways could offer potential avenues for managing feed intake in broiler production.