Little oscillation of daily food intake in mousekiller rats as opposed to nonkiller rats before any confrontation with mice.
During 46 consecutive days the daily food intake and weight were recorded in 16 male Wistar rats. On Days 31-45 one mouse was presented each rat daily. Before any experience with mice (Days 0-27) the mousekiller rats, compared with the nonkiller rats, regulated their individual food intake more closely to their homeostatic equilibria, corrected for the linear trend. This result indicates a functional difference in food intake regulation between mousekiller rats and nonkiller rats prior to any experience with mice. However, no difference in the mean food intake was found between the mousekiller and the nonkiller rats.
D000818:Animals; D001070:Appetitive Behavior / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology*; D008297:Male; D051379:Mice; D051381:Rats; D011919:Rats, Inbred Strains; D011922:Rats, Mutant Strains / Q000502:physiology*