effects of intracerebroventricular injections of glucose and insulin on food intake in broiler cockerels

glucose and insulin are two important factors in regulation of food intake. also, existence of central glucoreceptors have been determined in human and many of  animal species, in this study the existence of central glucoreceptors and regulative role of glucose in ingestive behavior of broiler cockerels were studied. in this study used from 128 broiler cockerels. at the first, guide cannula implanted stereotaxicaly in right lateral ventricle of brains of chickens. at onset of experiments, birds were injected with different doses of glucose and insulin via intracerebroventricular. then in other experiments, chickens received insulin prior to injection of glucose and cumulative food intake was measured 30, 60 90, 120, 150 and 180 minute after injections.the results of this study showed that glucose and insulin had no effect on food intake in chickens(p≥0.05). it is concluded that central glucoreceptors had no role in start of ingestive behavior in birds.