Resumen

GARCIA, JÁ. et al. Porcine proliferative enteropathy by Lawsonia intracellularis and coinfection with Trichuris suis and Balantidium coli in a pig in Uruguay. Veterinaria (Montev.) [online]. 2017, vol.53, n.207, pp.23-31. ISSN 0376-4362.

Porcine proliferative enteropathy (PPE) is aneconomically important, transmissible infectious disease of worldwide distribution caused by Lawsonia intracellularis. The objective of this report is to describe a caseof PPE caused by L. intracellularis in coinfection with Trichuris suis and Balantidium coliin Uruguay. The disease was diagnosed in October 2015 in a herd of 130 crossbred grower pigs up to 3 months of age. The cumulative incidence was 14% (18/130) and a lethality rate 83% (15/18). Affected animals presented profuse diarrhea, ill thrift and weakness, with progression to death after a clinical course of 10 days. At necropsy of one pig, the terminal segment of the ileum, cecum and colon showedthickening of the mucosa and irregular folds in a cerebriform pattern. In the cecum and proximal colon, there was also a diffuse fibrinonecrotic membrane attached to the mucosa withembedded specimens of Trichuris suis. Microscopiclesions were characterized bycrypt and gland hyperplasia with branching and depletion of goblet cells in the ileum and cecum. Multiple areas of superficial necrosis and ulceration were recognized with numerous protozoans morphologically resemblingBalantidium colitrophozoites adhered to the necrotic surface of the cecum. Lawsonia intracellularis was identified intralesionally by Warthin-Starry stain and immunohistochemistry.Lawsonia intracellularis should be considered a differential etiologic diagnosis for diarrhea and enteropathyin swine in Uruguay.

Palabras clave : swine; necrotic enteritis; ileitis; porcine intestinal adenomatosis..

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