Skin Pathomorphology at Chorioptic Mange of Cattle
This work is done in order to clarify the skin pathomorphology in cattle in various stages of chorioptic mange. Two groups of five cows each were formed in a cattle stock breeding complex. The first group included cows in the initial stage of chorioptic mange with moderate changes in the skin. The second group consisted of cows in the advanced stage of chorioptic mange with severe skin changes. Skin samples of tail skin were collected from all cows using a biopsy device that comprises a handle and a hollow cylinder with cutting working end. Histological preparations were prepared from skin samples and stained with hematoxylin and eosin by conventional technique. The study found that the initial stage of chorioptic mange is characterized by the destruction of the stratum corneum and epidermis metaplasia as the replacement of the stratum corneum by spiny cells. The later stage of chorioptic mange is characterized by a strong thickening of the epidermis due to acantosis and parakeratosis. Degeneration and metaplasia of epidermis are accompanied by serous dermatitis. Pathological process in the skin in chorioptic mange of cattle should be qualified as dermatosis-dermatitis from the pathomorphological perspective.