Week of 25-Aug-2017

What is the cause of the liver lesion in this heavily pregnant sow found dead?



incorrect answer

At post mortem examination, with the carcass still warm, there was blood stained fluid in the abdomen and the liver was in advanced decomposition with aeriation (aero chocolate liver). There was a pungent decomposing smell emanating from the abdomen

The condition is due to toxins produced by Cl novyi which is present in the small intestine and ascends the bile duct. There was mild small intestinal inflamation in this animal

The disease is a common if sporadic cause of death in adult sows especially in late gestation in good condition. The disease tends to occur more frequently in warm weather. It can also be seen in finishing pigs close to slaughter especially those fed wet co-products

It can be confirmed by FAT or PCR testing of the liver.

Similar liver changes can be seen at post mortem examination if the animal has been dead for more than 12-18 hours as part ofthe normal decomposition process. The condition should therefore only be diagnosed on the freshest of carcasses.

If necessary a multivalent Clostridial vaccine can be used but attention to feeding hygiene, avoiding excessive sow condition and good control of environmental temperatures can all reduce the risk.

Week of 21-Jun-2018

Spinal chord compression was detected when inspecting this pig carcass. What is the cause of this lesion?

Week of 14-Jun-2018

The unit has an increase of coughing and poor growth rates. What is the most likely cause of this lesion?

Week of 07-Jun-2018

The vet in the slaughterhouse condemns a sow with this skin lesions under welfare grounds and reports the farmer. What is the cause of these lesions?

Week of 01-Jun-2018

Widespread petechiation and congestion of the lung. What is the most likely cause of this lesion?

Week of 24-May-2018

A weaner pig is laying on its side unable to walk, making paddling movements, eyes rolling and with opisthotonus. What is the cause of the problem in this case?

Week of 17-May-2018

A batch of finishing pigs is presented to the slaughterhouse with skin lesions around the perineal area and lower body parts. What is the cause of this lesion?

Week of 10-May-2018

A heavily pregant sow is found in the pen with blood in the vulva. What is the cause of it?

Week of 03-May-2018

A first parity sow is weaned and is lame in the hindleg. There is poor response to treatment with antibiotics and NSAIDS. Separation of the head of the femur has occurred through the growth plate at post-motem. What is the cause of this condition?

Week of 27-Apr-2018

Pigs around 15 weeks old develop purple patches over the hindquarters extending to all over the body. Mortality is high. What is the cause of this lesion?