RESULTS OF THE USE OF INBRED STALLIONS IN THE VLADIMIR HEAVY DRAFT BREED
The article presents the results of studying the influence of the degree of inbredity of stallions-producers of the Vladimir heavy-harness breed on their development, breeding value and working qualities. Due to the limited population of horses of this breed, inbreeding became widespread, as a result of close inbreeding 16.7% of stallions were obtained, close - 25%, moderate - 50%, distant - 8.3%. The level of inbredity had a significant impact on the productive and breeding qualities of stud stallions. In terms of a set of features (height at the withers, metacarpal girth, indices: format, massiveness, boneiness; points for exterior, origin, working capacity), the best in the breed are the lines of Cast, Sibarite, Cold, which differ in the most pronounced indicators of the above-listed selectable traits. The best results in terms of development, working capacity and breeding qualities were shown by stallions obtained with moderate inbreeding, the worst with close and close inbreeding.