Failure of periodic presentation of palatable diet to entrain feeding, drinking and activity rhythms under constant conditions.
D000818:Animals; D001835:Body Weight; D002940:Circadian Rhythm; D004326:Drinking; D004435:Eating; D008297:Male; D009043:Motor Activity; D051381:Rats; D011919:Rats, Inbred Strains; D012055:Reinforcement Schedule