Week of 12-May-2017
There is an increase in pigs with a swollen mass behind the rear legs, below the anus. It is most frequently located on the side. What is the most likely cause of this lesion?
The unilateral swollen mass in the rear of the hind legs below the anus is a scrotal hernia.
It is thought that it is caused by failed obliteration of the process vaginalis after descent of the testis, or from failed involution at the internal inguinal ring such that it does not close off properly after the testes descend into the scrotum.
There is some genetic predisposition and some enviromental factors that can lead to an increase of ruptures. Some of those enviromental effects that could have an effect in the rate of hernias can be increased pressure at early age (piglet piling due to handling, cold temperature) or deficient castration technique.
Hernias can affect the growth of the animal, as well as its survival rate and the value of the carcass.
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?