Table 1.

Treatment groups (5 cages per group).

Group	Group size	Age at arrival	Handling treatment	Total number animals
1	1	5	No scruff	5
2	1	5	Scruff	5
3	1	7	No scruff	5
4	1	7	Scruff	5
5	2	5	No scruff	10
6	2	5	Scruff	10
7	2	7	No scruff	10
8	2	7	Scruff	10
9	3	5	No scruff	15
10	3	5	Scruff	15
11	3	7	No scruff	15
12	3	7	Scruff	15