From: First report on outbreaks of contagious ovine digital dermatitis in Sweden
Grade | Description |
---|---|
1 | Focal lesion, either proliferative or erosive/ulcerative, affecting the digital skin and coronary band. No underrunning of the hoof capsule |
2 | Separation between the hoof capsule and the lamellae affecting < 50 % of the hoof wall. Swollen digits. Subcorneal tissue haemorrhagic often with purulent material adherent. Foul smell |
3 | As grade 2 but affecting 50–100 % of the hoof wall |
4 | Horn beginning to regrow. Exposed subcorneal tissue roughened, haemorrhagic/necrotic, friable and easily traumatised. Affected digits often distinctly swollen and shortened |
5 | Horn regrown, surface smooth but distorted by circumferential ridges or creases. Digit often still wide and short |