Intake of a liquid diet after 2-deoxy-D-glucose injections in rats.

The effects of a liquid diet after 2-deoxy-D-glucose (2DG) were examined following water deprivation, after food deprivation, and at longer post-injection intervals when animals reportedly are hypophagic as a function of drug treatment. Water deprived rats were unable to increase their post-drug feeding when ingesting the liquid diet; and in food deprived subjects, intake patterns of liquid diet and of lab chow pellets were essentially identical after 2DG. The tendency of a 750 mg/kg dosage to produce a longer-term hypophagic reaction was more evident in animals given pellets instead of the liquid diet. While previous studies have found the liquid diet to promote 2DG-induced feeding in lesioned subjects, the present data demonstrate that such facilitation effects do not invariably occur during post-drug conditions in which animals are inhibited in their intake.