No abstract

Reports in which Map was isolated from wild boars reveal that the infection can occur with or without lesions, being the last the most frequent cases. Our preliminary results are in accordance to what was previously described 3 and demonstrate the presence of Map in the mesenteric lymph nodes of wild boars with granulomatous lesions similar to those observed in tuberculosis. Furthermore, we confirm that wild boar is both susceptible and may be a vector of Map infections, which poses a risk of disease transmission to other wild and livestock animals. It is also noteworthy that according to these preliminary results, 37.9% of the infected animals were approved for human consumption. DISCUSSION AND CONCLUSION P105-GRANULOMATOUS LESIONS AND MATERIAL AND METHODSGross and microscopic lesions were observed in 28 (28,8%) mesenteric lymph nodes from wild boars. These lesions were always multifocal and ranged from occasional proliferative lesions, with less than 1 cm (71.4%) to large areas of granulomatous lesions, more than 1 cm (28.6%) in diameter, of either necrotic or necrotic calcified granulomas ( Fig. 1A and 1B, respectively).The presence of lymphocytes (96.4%) (Fig. 1 C) RESULTSThe Eurasian wild boar (Sus scrofa) is the most widespread free-ranging ungulate in large areas of Europe 1 . Their rooting habits, omnivorous diet, ability to cross barriers and contact with a broad range of wild and domestic animals 2 , as well as their susceptibility to mycobacterial infections, makes them useful as disease sentinels 3 , but the presence of Mycobacterium avium subsp. paratuberculosis (Map) was never assessed in this species in Portugal.

Forensic veterinary pathology is essential to identify the cause of death of animals with suspicion of abuse, neglect, exogenous intoxication, medical errors, if the lesions were accidental or ante-mortem or in cases where the animal’s identity is needed. It involves several areas that can be used to determine the cause of death in animals, such as traumatology, entomology and toxicology. This work aims to determine the main lesions found in judicial necropsies of animals from the metropolitan region of Belém, qualifying the most prevalent lesions according to the classification in forensic traumatology. The necropsy was performed according to the animal species and using the method of Ghon. The animals were grouping by specie, sex, race and age and it was made a segmentation by vulnerable energy. 33 judicial necropsies (9.06%) were performed between January 2018 and December 2019, including 22 canines (66.7%), seven felines (21.2%), two farm animals (6.1%) and two wild animals (6.1%). Regarding the sex of the animals, in general, 51.51% were males and 45.45% were females. Young dogs and cats represented the highest percentage of cases. Mixed breed dogs were the most prevalent, with 31.8%. In all species, the most prevalent energy was chemical energy, totalling 18 cases. Second, with six cases, mechanical trauma with only canines and felines, in which, only in three were evident the blunt injury. In only one case, the suspicion was of biodynamic energy, with suggestive findings. In conclusion, the forensic necropsy associated with the animal’s history is capable of providing relevant information which assists the pathologist in the search for injuries, its identification and interpretation.

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