Clinical and histological characteristics of bursitis in the area of the tarsal joint in cattle.

Orthopedic pathologies are widespread in cattle (cattle) and cause significant economic damage to livestock. According to the literature, lesions of the limbs of varying severity in dairy cows are recorded in 70% of the livestock. Cattle with orthopedic pathologies lose exercise, their feed intake decreases, which leads to a decrease in their milk and meat productivity. One of the pathologies requiring close attention is aseptic and purulent bursitis of the tarsal joint. Despite the wide distribution of bursitis, the question of effective methods for diagnosing and treating sick animals remains open. This is important, since bursitis tends to progress to a complicated stage, and very often doctors have to deal with purulent bursitis, which can be prevented at an earlier stage of pathology development. In our opinion, when diagnosing and monitoring the treatment of bursitis, it is advisable to use such methods of clinical diagnostics as microscopy of synovial fluid, determination of sensitivity to antibiotics, cytological and histological studies, studies on markers of rheumatoid arthritis, C-reactive protein, diphenylamine test, antistreptolysin- Oh, rheumatoid factor. In addition, it seems relevant to conduct histological studies aimed at improving theoretical knowledge about the pathogenesis of bursitis in the early stages. It should be noted that today the treatment of bursitis by conservative and surgical methods requires large physical and material costs, is lengthy and does not always guarantee a positive result. The paper presents the results of studying the structure and characteristics of orthopedic pathologies in cattle in the Moscow region and information on the prevalence of bursitis. Based on complex studies carried out using clinical, morphological and microbiological methods, the characteristics of reactive and purulent bursitis are presented. In addition, data are presented on the information content of pathomorphological studies and the feasibility of their use in the algorithm for the complex diagnosis of bursitis. The proposed algorithm makes it possible to verify the diagnosis and start treatment in a timely manner, which in turn leads to the preservation of animal productivity.