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Bovine Viral Diarrhoea Virus (view source)

Revision as of 13:12, 24 August 2010

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→‎Pathology

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===Pathology===

[[Image:Bvd2.gif|right|thumb|150px|Coalescing lesions of BVDV (Courtesy of Alun Williams, RVC)]]

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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>.

Much useful information can be gained from a detailed post

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haemorrhages and small erosions along the folds. The

contents are dark, watery and often foul smelling.

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Gross lesions seldom are seen in cases of mild disease.

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Gross lesions seldom are seen in cases of mild disease. (Brownlie, 1985).

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Swollen lymph nodes, erosions and ulcerations of the GI tract, petechial and ecchymotic hemorrhages on the serosal surfaces of the viscera, and extensive lymphoid depletion are associated with severe forms of acute BVD.

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~~Mucosal disease~~

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At necropsy, erosions and ulcerations may be found throughout the GI tract. The mucosa over Peyer’s patches may be hemorrhagic and necrotic. Extensive necrosis of lymphoid tissues, especially gut-associated lymphoid tissue, is seen on microscopic examination.

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~~Lesions of the abomasum and small intestine are seen on post-mortem examination, and congestion of the large intestine mucosa results in a stripy, thickened appearance~~ (Brownlie, 1985).

==Treatment and Control==

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