Fig. 4From: Osteochondrosis, but not lameness, is more frequent among free-range pigs than confined herd-matesThe estimated least-squares means “Sum of OC” (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. Free-range pigs had a significantly higher sum of OC in the shoulder, stifle and hock joints and for the whole pig compared to confined pigsBack to article page