Bìol. Tvarin, 2017, Volume 19, Issue 2, pp. 44–49

FEATURES OF THE PATHOLOGICAL CHANGES IN THE INTESTINAL WALL AT GASTROINTESTINAL STRONGYLYATOSIS OF CATTLE

V. Kruchynenko1, M. V. Skrypka1, I. I. Panikar2

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1Poltava State Agrarian Academy,
1/3 Skovorody str., Poltava 36003, Ukraine

2Odessa State Agrarian University,
13 Panteleimonovska str., Odessa 65012, Ukraine

The pathomorphological investigation revealed catarrhal enterocolitis, a specific inflammation of the large intestine lining of granulomatous nature caused by Oesophagostomosis agents in intestinal wall. Thus, in the intestine were often revealed formations of round, pink-red color with size 0.5–1 cm. Such formations were localized in the mucosa and had enough dense texture. In addition, the rounded formations with size 0.1–0.3 cm were observed. Such nodules often had dark brown or black necrotic top and were surrounded with roll-shaped formation.

Histologically in the small intestine, where the parasites Bunostomum phlebotomum and Nematodirus spathiger were recorded, a signs of edema mucosal villous infiltration by lymphocytes and granulocytes, the destruction of the apical part of the villi were revealed. There were hypertrophy and hypersecretion of crypt cells. In the wall of both small and large intestine a mucoid swelling submucosa and around (and in areas) with granulomatosis a fibrinoid swelling and fibrinoid necrosis were registered.

In the large intestine wall an infiltration of all layers of the mucous membrane cells with a predominance of lymphocytes, in the apical part and around the crypts an accumulation of granulocytes (eosinophils, neutrophils) and macrophages were registered. In the intestinal wall of one animal a formation of granulomas at different stages was registered. Also we registered cell purulent necrotic inflammation. The round-shaped fragments of Oesophagostomum radiatum larvae surrounded with a large number of cells lymphoid series, granulocytes were discovered, and the outside they were surrounded with a layer of lymphoid cells, capsule consisting of collagen fibers. These sites were mainly localized in the submucosal basis. The intestinal wall in these places was clearly thickened.

Keywords: GASTROINTESTINAL STRONGYLYATOSIS, OESOPHAGOSTOMOSIS, INTESTINES, PATHOLOGICAL CHANGES, CATTLE

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