Fig 1.
The initial handling phase (week 3–18) was part of a study reported elsewhere [52].
Table 1.
Ethogram for home cage behaviour recording.
Fig 2.
Two positive (black) and two negative reference arms (white) and two near positive (dark grey) and two near negative ambiguous arms (light grey).
Table 2.
Results of experimenter handling on exploratory measures in the eight arm radial maze.
Fig 3.
Time spent in positive and negative arms across training sessions with added regression lines.
Time spent in positive and negative arms are inversely related and both are shown for reference purposes only. Time spent in arms is shown as proportion of trial duration, mean ± SEM.
Fig 4.
Time spent in each type of arm during the test session.
Time spent in arms is shown as proportion of trial duration, mean ± SEM.
Fig 5.
Level of different forms of stereotypic behaviour.
Bar-mouthing (n = 13), cage-top twirling (n = 4), back-flipping (n = 3).
Fig 6.
Level of (a.) home cage activity and (b.) stereotypic behaviour in both handling groups.
Home cage activity is presented as proportion of observed time and stereotypic behaviour as proportion of active time, mean ± SEM.