Week of 01-Sep-2017
Which infectious disease is the most likely cause of the haemorrhages visible on the serosal surfaces of this growing pig which was found dead?
Haemorrhagic lesions within a carcass should always raise suspicion of Classical or African Swine Fever (which are pathologically indistinguishable) as would multiple sudden deaths. As well as occuring on serosal surfaces, haemorrhagic lesions are seen in lymphatic tissue —especially the spleen, lymph nodes and tonsils— and parenchymatous tissues. Skin lesions suggestive of septicaemia may also be evident. In more chronic cases button ulcers may be present in the mucosa of the large intestine following a period of high fever prior to death. Reproductive failure in the form of abortion can occur as well as nervous,enteric and respiratory disease in any age pig.
The clinical and epidemiological picture can be useful to differentiate PDNS the pathology of which can suggest haemorrhagic disease. Illness affecting a wide age range of animals would suggest ASF/CSF. If there is any doubt ASF/CSF suspicion should be notified and investigated.
African Swine Fever —against which there is no vaccine— has become widespread in eastern Europe following its initial incursion via Georgia in 2007 and subsequent spread through Russia. It now represents a very real threat to all European pig populations especially where biosecurity lapses occur and wild boar populations are prevalent.
Week of 19-Jan-2018
Some pigs have swollen ears and walk with their heads tilted to one side. What is the most likely cause of this lesion?
Week of 12-Jan-2018
There is scour, ill thrift and high mortality during the first 4 weeks post-weaning. All post-mortemed pigs had the same gross lesions, as the one seen in the picture. What is the most likely cause of this lesion?
Week of 05-Jan-2018
Small intestine opened during a routine check in the slaughterhouse: what can we see?
Week of 29-Dec-2017
This pig has a mass protruding from behing. What is the most likely cause of this lesion?
Week of 22-Dec-2017
Sucking pigs develop swollen joint in the legs from 3 weeks of age. What is the most likely cause of this lesion?
Week of 15-Dec-2017
There is an outbreak of sudden deaths, inappetence, high fever and cough in pigs from 10 weeks old to slaughter. Inspection of the lungs in the post-mortemed pigs detects necrotising pneumonia in the diaphragmatic lobe and pleurisy. What is the cause?
Week of 08-Dec-2017
There is an increase in subcutaneous haemorrhages and bruises in the skin of piglets from 7 days of age, after being born normal. Mortality was high after few days of developing the clinical signs. What is the most likely cause of this lesion?
Week of 01-Dec-2017
Piglets are born with a swollen and reddish vulva. What is the most likely cause of this lesion?