From: How effective are clinical pre-farrowing risk assessment and the use of soft rubber mats in preventing shoulder ulcers in at-risk sows?
Shoulder ulcer score
Study group
0
1
2
3
4
Non-at-risk sows
358 (77.0)
97 (20.9)
8 (1.7)b
2 (0.4)b
0 (0.0)
No-RMa at-risk sows
38 (37.6)
49 (48.5)
11 (10.9)b
2 (2.0)b
1 (1.0)b
RM at-risk sows
49 (52.7)
36 (38.7)
7 (7.5)b
1 (1.1)b