Figure 3
From: Aggression and cortisol levels in three different group housing routines for lactating sows
Median number of (a) attacks initiated and (b) attacks received per sow within management routines W1, W2 and W3, recorded during 2 h for four consecutive days (W1 n  = 14; W2 n  = 13; W3 n  = 16). The range of number of attacks within management routine is reported above each bar. There were no significant differences between management routines.