Pigs and wild boar

The oral route is considered to be the main way in which pigs can become infected. Most cases are attributed to contact with wildlife but other potential routes could be ingestion of untreated milk or milk products from infected cows or consumption of feedstuffs contaminated by wildlife. There is no active surveillance for TB in pigs; cases will tend to be identified at post-slaughter inspection or at post-mortem in a veterinary laboratory. TB is not considered to be particularly contagious amongst pigs or to spread easily from pigs to other animals.

There are no specific statutory compensation amounts for goats, pigs and sheep. For these species compensation will be based on a valuation of the compulsorily slaughtered animals.

Arbitration arrangements are in place for cases where that valuation is disputed.

For all species, if you get approval from APHA you can choose to slaughter your animals at your own expense and keep any salvage value.

> Click here for a useful article – Mycobacterium bovis infection in domestic pigs in Great Britain

Lesions in pigs are usually limited to the lymph nodes of the head and do not result in clinical signs. Generalised disease is also seen which may result in clinical signs.

> Click here for Defra guidance on managing TB in non-bovine animals, including movement restrictions and compensation

> Click here for Veterinary Journal Volume 198, Issue 2, November 2013. Bailey SS, Crawshaw TR, Smith NH, Palgrave CJ. Mycobacterium bovis infection in domestic pigs in Great Britain. (Pay for article, abstract available)

> Click here for AHDB Pork Knowledge Transfer Bulletin: Health implications of bovine TB in pig populations

Post-mortem images of pigs (images include graphic content):

pigs1

This is the retropharyngeal lymph node of a pig with generalised tuberculosis. The route of infection was thought to be feeding of milk from M.bovis infected animals (image source: APHA).

pigs2

Close up view of a retropharyngeal lymph node of a pig with TB. The lymph node shows many tubercles, some of which are merging (image source: APHA).

pigs3

This is the mesenteric lymph node of a pig with tuberculosis showing calcification (image source: APHA).