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Jaw and Snout Deviation

This is a common yet little recognised condition in the sow. When the jaw is at rest, a proportion of sows (often around 5%) and particularly those housed in confinement, show a misalignment of the lower jaw to the left or right of centre. In extreme cases this can give the appearance of rhinitis but it is of no significance.


  • N/A
  • Misalignment of the lower jaw when at rest.
  • The upper jaw and nose become shortened and flattened, in some cases to a grotesque degree.
Weaners & ocassionally in Growers
  • Occasionally, as in sows.

Causes / Contributing factors

  • Constant trauma from bar biting or the use of nipple drinkers.
  • Infection of the bone as a result of faulty teeth clipping.
  • Prolonged feeding of very finely ground meal in narrow troughs.


This is based on the clinical symptoms and absence of rhinitis.

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.