There were no significant effects of treatment, or interaction between the effects of age and treatment, on the proportion of time spent in any of the maze zones (Fig. 4, Attempt 1). Regardless of age (P > 0.05), rams spent the greatest proportion of time in zones C and E. However, rams spent significantly (P < 0.001) more time in zones A and B, and significantly (P < 0.01) less time in zone D, at 95 compared to 83 weeks of age.