Fig. 3
From: Osteochondrosis, but not lameness, is more frequent among free-range pigs than confined herd-mates
The estimated least-squares mean highest osteochondrosis scores (y axis) in the joints/pigs (x axis). Significant differences between the housing groups are designated as *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001 on the x axis. The OC scores ranged from score 0 (no osteocondral lesions present) to score 5 (severe OC lesion). The free-range pigs’ highest OC scores registered in the shoulder, stifle and the hock joint, and for the whole pig, were significantly higher than in the confined pigs