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Gross path challenge #10

oral ulceration with multiple well demarcated, irregularly shaped, foci of oral epithelial loss

Photo: Rick Last, DPIRD WA

BOVINE MOUTH: The gingiva and dental pad have multiple well demarcated, irregularly-shaped foci of oral epithelial loss exposing reddened submucosa (oral ulceration). There is diffuse periodontal reddening (periodontitis) and the incisors have multifocal yellowing and irregular pitting of the enamel surface (enamel hypoplasia).

Dx: Bovine pestivirus was present in both blood and faeces and the yearling was PCR positive for BVDV-1. The lesions and testing are consistent with a diagnosis of mucosal disease.