1991 Volume 44 Issue 10 Pages 1010-1013
The pathogenesis of pododermatitis circumscripta in cattle was examined. Thirty-two soles of Holstein cattle were observed. Three of them were clinically diagnosed as pododermatisis circumscripta and others appeared clinically normal. Epidermis soleae and corium soleae were observed with a scanning electron microscope.
The results are as follows: Not only 3 soles with pododermatitis circumscripta but also 16 having clinically normal soles showed the following abnormal findings: 1. Hyperextension, curvature and hypertrophy on papillae coriales, 2. Vascularization and vasodilation in epidermis soleae and corium soleae and 3. Rhagades in epidermis soleae were observed.
From these results, we suppose that these abnormalities are one of the first stage of pododermatitis circumscripta which might be induced from intensive feeding, abnormal hoof length and stress resulting from pregnancy or calving.
