Master of Arts (MA)
Faculty of Science
The effects on feeding of moving animals from individual- to pair-housing were explored in the present three experiments. Wheel access is known to result in a temporary suppression of feeding. The move to pair-housing was compared with the effect of wheel access. In Experiment l, a group of rats was moved from individual to pair-housing (IP group) and compared to a group of individually-housed rats (IND group) and a group of chronically pair-housed rats (PAIR group). The animals in the IP group showed a temporary (three days) suppression in feeding (initially 23%). When half of the IND and PAIR group animals were moved between individual- and pair-housing on alternate days (IND-ALT and PAIR-ALT groups, respectively) (Experiment 2), only the rats in the IND-ALT group showed a three day feeding suppression (initially 40%). Experiment 3 examined the effect of the simultaneous introduction of wheels and transfer of housing conditions. The feeding suppression induced by the transfer from individual- to pair-housing was evident prior to, and of a shorter duration than, the feeding suppression induced by wheel access. These results indicate that the feeding suppression, induced by a housing shift, is not the same as that evident when rats are given wheel access. It is concluded that the stress associated with novel pair-housing was responsible for the decrease in feeding. Novelty does not appear to account for the suppression of feeding following wheel access.
O'Connor, Roison M., "The effect on feeding and wheel running behaviours of housing rats in pairs" (1997). Theses and Dissertations (Comprehensive). 659.