They arise due to repeated bruising and pressure over the bony prominences on the shoulder blade in breeding females. Ultimately the skin breaks, there is an erosion and a large sore develops. Such sows should not be kept for future breeding
Symptoms
Piglets, Weaners & Growers
- N/A
Sows
- Highest point of the spine a reddening of the skin appears, which gradually forms into an ulcer.
- In severe cases the lesion may extend to 40 – 70mm in diameter with the development of extensive granulation tissue.
- Often both sides of the shoulder are affected.
Causes / Contributing factors
- They are associated with totally slatted flooring and individual sows that are too thin and have a prominent spine to the shoulder blade.
- First noticed in the farrowing crates where the floors are slippery.
- The sow has difficulty in rising, thus constantly bruising her shoulder.
Diagnosis
This is based on the clinical signs and ulcerating shoulders.