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Shoulder Sores

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


Piglets, Weaners & Growers
  • N/A
  • 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.


This is based on the clinical signs and ulcerating shoulders.

Further Reading

Click on the links below to find out more about this disease, including treatment, management control and prevention information. The top link is the main article on this disease.