The mean proportion of time spent in each maze zone, for the two groups of animals, are shown in Fig. 4 with the associated P-value summary in Table 1. At 41 weeks of age, there was no effect of treatment on the time spent in any maze zone. At 83 weeks of age, on the first attempt, animals spent most time in zones B, C and E. On the second attempt, the proportion of time spent in each zone was more equal, with the exception of zone E, where animals spent the greatest proportion of time. By the third attempt, the time spent in each zone was approximately equal. These changes in the pattern of maze progression were reflected by a significant (P < 0.01) increase in the proportion of time spent in zones A (1st trap) and D (4th trap), and a significant (P < 0.001) decrease in the proportion of time spent in zone C (3rd trap) over the course of the three attempts. The GnRHa-Rec group spent significantly (P < 0.05) less time in zone B than the Control group, particularly in attempt 2. The GnRHa-Rec group also tended (P = 0.080) to spend less time in zone E in attempt 1, but more time in this zone in attempt 3, compared to Controls.