Figure 7From: Aggression and cortisol levels in three different group housing routines for lactating sows Scratch score (mean ± S.D) for multiparous sows ( n  = 32) and primiparous sows ( n  = 11). Scratch score 0 = none; 0 > 3 = mild; 3 < 5 = moderate; ≥5 = multiple. Back to article page