Roles of dopamine D1 and D2 receptors in the acquisition and expression of fat-conditioned flavor preferences in rats

► Rats display robust sugar and fat conditioned flavor preferences (CFP). ► Dopamine (DA) D1 receptors mediate CFP conditioned by intragastric sugar. ► DA D1 and D2 receptors mediate CFP conditioned by orosensory fructose. ► DA D1 and D2 receptors produce limited effects on expression of corn oil CFP. ► DA D2 receptors produce limited effects on acquisition of corn oil CFP.