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Bovine Viral Diarrhoea Virus (view source)
Revision as of 13:22, 24 August 2010
, 13:22, 24 August 2010→Pathology
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−The abomasum usually shows several (five to 50) small
−discoid erosions, about 5 mm diameter, with surrounding
−hyperaemia in the mucosa. Submucosal petechial haemor-
−rhages are a common finding, particularly in the pylorus (Fig
−6). Occasionally, the erosions can be larger and ulcerated.
In cases of mild, acute BVD, lesions are rarely seen. When disease is more severe, the lymph nodes may appear swollen, there may be erosions and ulcerations of the gastrointestinal tract tract and serosal surfaces of the viscera may show petechial and ecchymotic hemorrhages<sup>39</sup>.
In cases of mild, acute BVD, lesions are rarely seen. When disease is more severe, the lymph nodes may appear swollen, there may be erosions and ulcerations of the gastrointestinal tract tract and serosal surfaces of the viscera may show petechial and ecchymotic hemorrhages<sup>39</sup>.
−The pathology associated with mucosal disease is much more striking. Oral, lingual and buccal erosions are observed, and buccal lesions often coalesce to form larger areas of necrosis and sloughed epithelium. Oesophageal lesions present similarly. The gastrointestinal tract often shows characteristic pathology, but post-mortem examination must be performed soon after death so that these are not masked by autolytic changes. In the rumen, ulceration is rare but congestion and oedema may be seen along the pillars, and papillae can be reduced in size.
+The pathology associated with mucosal disease is much more striking<sup>34</sup>. Oral, lingual and buccal erosions are observed, and buccal lesions often coalesce to form larger areas of necrosis and sloughed epithelium. Oesophageal lesions present similarly. The gastrointestinal tract often shows characteristic pathology, but post-mortem examination must be performed soon after death so that these are not masked by autolytic changes. In the rumen, ulceration is rare but congestion and oedema may be seen along the pillars, and papillae can be reduced in size. Several discoid erosions of around 5mm in diameter appear in the abomasum, with hyperaemia of the surrounding mucosa and petechiation of the submucosa, particularly at the pylorus. Abomasal erosions occasionally enlarge and ulcerate.
+The small intestine, if opened throughout its length to
The small intestine, if opened throughout its length to
expose the antimesenteric surface, will reveal oval erosions
expose the antimesenteric surface, will reveal oval erosions