The Role of Central Catecholaminergic Systems in Regulation of Food Intake of Chicks

To clarify catecholaminergic systems on the regulation of food intake in the neonatal chick, we examined the effects of intracerebroventricular (ICV) injection of prazosin (α1-adrenoceptor antagonist), yohimbine (α2-adrenoceptor antagonist) and benserazide (an inhibitor of L-arom...

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Bibliographic Details
Published in:The Journal of Poultry Science
Main Authors: Takashi Bungo, Ryuichi Ando, Sin-Ichi Kawakami, Atsushi Ohgushi, Mitsuhiro Furuse
Format: Article
Language:English
Published: Japan Poultry Science Association 2001-01-01
Subjects:
yohimbine
prazosin
benserazide
feeding behavior
chicken
Online Access:https://www.jstage.jst.go.jp/article/jpsa/38/1/38_1_35/_pdf/-char/en
Description
Summary:To clarify catecholaminergic systems on the regulation of food intake in the neonatal chick, we examined the effects of intracerebroventricular (ICV) injection of prazosin (α1-adrenoceptor antagonist), yohimbine (α2-adrenoceptor antagonist) and benserazide (an inhibitor of L-aromatic amino acid decarboxylase). We found that food intake was significantly suppressed by ICV injection of yohimbine (25 and 50μg) over 60min (P<0.05). Any doses of prazosin (1.25, 2.5 and 5.0μg) did not alter food intake of chicks (P>0.05). ICV administration of benserazide induced a hypophagia after 60min postinjection (P<0.05). It is suggested that catecholaminergic systems play an important role in the neural regulation of food intake in chicks, especially through α2-adrenoceptor.
ISSN:1346-7395
1349-0486

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