- news, features, articles and disease information for the swine industry

ThePigSite Quick Disease Guide

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Fever means a high body temperature of 39-40?C (103-109?F). It may occur with little or no other signs or be part of a specific disease.


All Pigs
  • Vomiting.
  • Temperature.
  • Inappetence.
  • No milk.
  • Dehydration.
  • Dullness / Lameness.
  • Increased respiration.
  • Reddening of skin. Blue skin.
  • Metritis.
  • Mastitis.
  • Abortion.
  • Shivering.

Causes / Contributing factors

  • Mastitis or metritis.
  • Retention of a dead pig.
  • Retention of afterbirth.
  • A bacterial septicaemia (e.g. erysipelas).
  • Flu or PRRS.
  • Secondary bacterial infections associated with flu or PRRS.
  • Cystitis/ pyelonephritis.
  • Acute stress or eclampsia.
  • Heat stroke.
  • Pneumonia.


Check for any of the above conditions. If you cannot find out what the cause is and there are a number of animals involved, veterinary advice should be sought. Bear in mind that depending where in the world your herd is located, fever may be the first clinical sign in such diseases as classical swine fever (hog cholera), African swine fever and aujeszky's disease (pseudorabies).

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.