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?

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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 17-Nov-2017

This is a pig with a swollen abdomen. What is the most likely cause of this lesion?

Week of 10-Nov-2017

After an increase of sudden deaths in growing and finishing pigs, lesions like this are detected. What is the most likely cause?

Week of 03-Nov-2017

There is an increase of ill thrift and laboured abdominal breathing in the weaners. There is poor response to antimicrobial treatment. Mortality ranges from 4 to 30%. What is the most likely cause of this lesion?

Week of 27-Oct-2017

This is a newly born piglet that cannot stand on its feet for walking. What is the most likely cause of this lesion?

Week of 20-Oct-2017

There is scour, ill thrift and high mortality during the first 8 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 13-Oct-2017

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

Week of 06-Oct-2017

There is an increase of ill thrift and laboured abdominal breathing in the weaners. There were poor response to antimicrobial treatment. Mortality ranges from 6 to 15%. What is the most likely cause of this lesion?

Week of 29-Sep-2017

Which disease could cause this type of lesion?

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?