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Central Functions of Amino Acids for the Stress Response in Chicks |
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H. Yamane, I. Kurauchi, D. M. Denbow, M. Furuse* |
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Correspondence:
M. Furuse,
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| Abstract |
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The nutritional significance of essential amino acids, as well as non-essential amino acids, is well documented in poultry production with regards to growth performance and protein accretion. However, the function of amino acids in the stress response is still unclear. L-Pipecolic acid, a L-lysine metabolite in the brain, induced a hypnotic and sedative effect acting via the -aminobutyric acid receptors. L-Arginine also induced a sedative effect via its metabolism to L-ornithine. In addition, three-carbon non-essential amino acids like L-alanine, L-serine and L-cysteine also induced sedative effects. These facts suggest that the requirement for amino acids in both essential and non-essential types may require reconsideration to add the concept of stress amelioration in the future. |
| Keywords:
Amino Acids; Sedation; Hypnosis; Stress; Chick |
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