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 22-Sep-2017
What is the likely cause of this lesion seen in >10% of lungs in slaughter pigs each week from a breeder feeder farm?
Week of 15-Sep-2017
The ulcer shown is in the preputial diverticulum of an adult boar culled due to persistent haemorrhage in the ejaculate. What is the likely cause?
Week of 08-Sep-2017
This non-fatal scour is seen in piglets from 10 days of age. What is the most likely primary cause?
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?
Week of 07-Aug-2017
What is the most likey cause of the lesion seen in a single 10 day old piglet on an outdoor pig unit in January?