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 23-Feb-2018
Sudden death in 6 – 8 weeks old weaner pigs. Carcasses are pale. There is haemorrhagic abdominal fluid with clotted blood strands and hepatic rupture. Excess of fluid in the thorax. Heart and muscles are pale. What is the most likely cause?
Week of 16-Feb-2018
This pig had a good body condition, was anaemic and died suddenly. The intestinal content is dark black. What is the most likely cause?
Week of 09-Feb-2018
This sow has reddening of skin and considerable pain. What is the most likely cause of this lesion?
Week of 02-Feb-2018
This pig had a good body condition, was anaemic and died suddenly. The stomach had a dark black content inside.
Week of 26-Jan-2018
Necrotic lesions in the feet of a weaner pig. What is the most likely cause of this lesion?
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?