03/11/2014
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Cavitat abdominal (porcí)
2
Lesions nodulars a pleura i vísceres d’una canal de porc
Tot i no tenir un aspecte caseós la sospita dels inspectors era que es tractés d’un cas de tuberculosi.
L’estudi histopatològic va evidenciar que es tractava d’una neoplàsia maligna de cèl·lules rodones: limfosarcoma. En porc, les lesions de tuberculosi tenen un caràcter més proliferatiu que necròtic i, macroscòpicament, poden tenir aspecte de neoplàsia. Per tant, era necessari descartar que es tractés d’un brot de tuberculosi. Les lesions tuberculoses en porc poden estar causades per micobacteris del complex M.tuberculosis i per M.avium.
2 comment(s)
Thanks for your comment Martín, we had a few cases of M.avium in pigs a couple of years ago:
https://sesc.cat/lesions-granulomatoses-disseminades-en-canals-de-porci/?lang=en
Then the suspected origin of the infection was the feed fed to the animals, which was the dame in the different farms that has cases.
comment from the LinkedIn group: Swine Health, Nutrition and Production Professionals
Martín Liebstein
Clinical Research Veterinarian at RTI, LLC
There has been a recent conversation within some swine veterinarians in the US, about pigs being condemned at slaughter with similar findings to this case you have posted. Apparently, the inspector at the plant determined that the animals had lymphosarcoma. Further testing done by the company’s vet has shown that the swollen lymph nodes correlate to PCV2 diagnosis. Other vets suggested that M. avium could be playing a role, introduced by birds getting in contact with the pigs in the barn. Definitely, different diseases to be considered and a good reminder to keep our eyes and mind open.