Week of 23-Nov-2018

A number of weaners died suddenly within the first 4 weeks post-weaning. All them have oedema of mesocolon at post-mortem examination. What is the most likely cause of this lesion?

Confirm

Results

incorrect answer

Oedema of the coiled colon in a weaner with oedema disease. This disease is caused by haemolytic Escherichia coli that produces F18 pili and Shiga toxin 2e (Stx2e, also known as verotoxin 2e or VT2e).

Clinical signs range from peracute death with no signs of illness to CNS involvement with ataxia, paralysis, and recumbency. Oedema disease usually occurs 1–2 weeks after weaning and typically involves the healthiest animals in a group. The disease is seen occasionally in nursing pigs or in adult pigs. The average morbidity is 30%–40%, and the mortality among affected pigs is often as high as 90%. Periocular oedema, swelling of the forehead and submandibular regions, dyspnea, and anorexia are common. Some other typical post-mortem findings are oedema of the greater curvature of the stomach wall and coiled colon (as seen in this case).

Photo of the week

Week of 19-Apr-2024

Which disease could cause this type of lesion?

Week of 12-Apr-2024

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 05-Apr-2024

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 28-Mar-2024

This non-fatal scour is seen in piglets from 10 days of age. What is the most likely primary cause?

Week of 22-Mar-2024

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 15-Mar-2024

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

Week of 08-Mar-2024

Is there anything strange about any of the pigs in the photo?

Week of 23-Feb-2024

This 6-week-old pig has non-pruritic lesions on the skin. What can it be?

Week of 16-Feb-2024

What is the most likey cause of the lesion seen in a single 10 day old piglet on an outdoor pig unit in January?

Week of 08-Feb-2024

A first parity weaned sow can not hold her weight. It shows poor response to antibiotics and NSAIDS. What is the most likely cause of this lesion?

Week of 02-Feb-2024

What is the most likely cause of this condition?

Week of 19-Jan-2024

There is a disease outbreak with sudden deaths, inappetence, high fever and difficult breathing in pigs from 15 weeks until slaughter. The slaughterhouse inspection shows lungs like those in the image. What is the most likely cause?

Week of 12-Jan-2024

There is an arthritis and skin lesion associated increase in condemnation rates at the slaughterhouse. What is the most likely cause of this problem?

Week of 05-Jan-2024

This is a 7 day old piglet that was born with this condition on the skin. What is the most likely cause of this lesion?

Week of 29-Dec-2023

This lesion is caused by:

Week of 22-Dec-2023

This lesion is caused by:

Week of 08-Dec-2023

This piglet is lethargic and non-pruritic. What is the cause of this condition?

Week of 01-Dec-2023

The following lesion is occasionally seen on the placenta following a normal full term farrowing. What is it and what is its significance?

Week of 24-Nov-2023

In this confinement stall the slat level is below the passageway and the rear door is tight to the floor. Which of the following comments is true

Week of 17-Nov-2023

A dry white deposit is evident on the mucosal surface of the vulva of a sow served 25 days previously. What is it and what is its significance?

Week of 10-Nov-2023

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?

Week of 03-Nov-2023

What caused the sudden death of this 8 week old weaner?

Week of 20-Oct-2023

Mesenteric lymph nodes enlargement are more likely consistent with:

Week of 13-Oct-2023

In which production phase is this finding more frequently observed?

Week of 06-Oct-2023

What is the aetiological cause of this lesion?

Week of 29-Sep-2023

How is the texture of these organs?

Week of 22-Sep-2023

The turbinate lesion is due to: