Extent of distribution digital dermatitis in the cows on the farm

The aim of the work was to study the degree of spread of finger dermatitis in the conditions of the farm SPK named after N. K. Krupskaya in the Melekessky district of the Ulyanovsk region. A clinical study revealed 90 heads (7.5 %) with various stages of limb damage. Of these, 2 heads (0.16 %) were found with lesions of both hind limbs. Among all affected cows, the largest number were animals with the degree of M3 (48 %), and the smallest with the stage of M4 (14.4%). Among dry cows revealed: with the lesion stage M1 - 8 heads (25 %), M2 - 3 heads (9. %), M3 - 15 heads (47 %), M4 - 6 heads (18 %). The percentage correspondence of affected cattle, depending on the number of lactation, its stages and average daily milk productivity, remained in the range of 5-6 %. The increase in the number of diseased animals was measured. in addition, there was a sharp increase in the number of animals with both hind limbs affected (from 14.4 % to 20.5 % of the total number), which also indicates an aggravation of the development of the inflammatory process.