Week of 19-May-2017
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?
The deposit is precipitated calcium carbonate or chalk which is derived from the urine. Calcium deposits in the bladder of sows are common particulaly in areas with high calcium salt content in water supplies (hard water) and periodically will be flushed out during urination and deposit on the vulval lips as a dry powder. In itself it is of no pathological significance and is not associated with pregnancy failure; if excessive buildup occurs in the bladder this can cause inflammation and act as a trigger for cystitis or even ascending pyelonephritis particularly in sows that are confined or generally inactive. Increasing water availability and encouraging more frequent urination will improve flushing and reduce such build up. In extremes water filtration/sedimentation systems may be needed.
It can be confused with a drying purulent vulval discharge arising from bacterial infection of the vagina, cervix or uterus but in such cases there is likely to be loss of pregnacy and return to service.
Flow back of semen is common post service but would not be evident beyond 48h post mating/insemination.
Week of 14-Jul-2017
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 07-Jul-2017
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 30-Jun-2017
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 02-Jun-2017
The following lesion is occasionally seen on the placenta following a normal full term farrowing. What is it and what is its significance?