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Arginine affects appetite via nitric oxide in ducks
1Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China Chongqing Academy of Animal Sciences, Chongqing, 402460, People's Republic of China.
Poultry Science
|June 7, 2014
Summary
Arginine intake influences feed consumption in Pekin ducks. This amino acid may regulate feeding behavior by affecting nitric oxide synthesis.
Area of Science:
- Animal Nutrition
- Biochemistry
- Physiology
Background:
- Arginine is a crucial amino acid for poultry.
- The role of arginine in regulating feed intake is not fully understood.
- Nitric oxide (NO) is involved in various physiological processes, including appetite regulation.
Purpose of the Study:
- To investigate the mechanism by which arginine regulates feed intake in Pekin ducks.
- To explore the relationship between arginine levels, feed intake, and nitric oxide production.
- To determine if nitric oxide mediates the effect of arginine on feeding behavior.
Main Methods:
- Experiment 1: Pekin ducks were fed diets with varying arginine levels (0.65%, 0.95%, 1.45%).
- Experiment 2: Ducks received intraperitoneal injections of saline or L-NG-nitro-arginine methyl ester HCl (L-NAME) to inhibit nitric oxide synthesis.
- Feed intake and plasma nitric oxide levels were measured in both experiments.
Main Results:
- Lower arginine levels (0.65%) significantly reduced feed intake and plasma nitric oxide in Pekin ducks.
- Inhibition of nitric oxide synthesis with L-NAME led to decreased feed intake.
- A positive correlation was observed between arginine levels, nitric oxide production, and feed intake.
Conclusions:
- Arginine plays a role in modulating feed intake in Pekin ducks.
- The findings suggest that arginine influences feeding behavior through the endogenous synthesis of nitric oxide.
- This study provides insights into the nutritional and physiological regulation of appetite in poultry.
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