Interaction between central GABAA receptor and dopaminergic system on food intake in neonatal chicks: role of D and GABA receptors.

Objective: The present study was designed to examine the role of central γ-Aminobutyric acid receptors and dopaminergic system on feeding behaviour in neonatal layer-type chicken.

Methods: In this study, six experiments were designed, each with four treatment groups (n = 44 in each experiment). In experiment 1, four groups of 3-h food-deprived chicks received a dose of either the intracerebroventricular injection of (1) control solution, (2) Levo-dihydroxyphenylalanine as precursor of dopamine; 125 nmol, (3) Gaboxadol (γ-Aminobutyric acid receptor agonist, 0.