Assessment of tolerance in dairy cows of the “sv” product for dry hoof baths

The development and implementation of safe, effective means of preventing and treating diseases of the distal extremities of cattle has important veterinary, zoohygienic and economic significance. At present, the participation of saprophytic and opportunistic microorganisms and their associations in the occurrence and spread of infectious diseases of the fingers and hooves in cattle has been established. An important stage in conducting clinical trials of a new drug is studying the tolerability of its increased doses in all target species of animals for which it is intended according to the instructions. The physiological characteristics of cows associated with the birth of calves and milk production limit the range of effective medicines (antibiotics, NSAIDs, etc.) used for this category of productive animals, which creates certain difficulties in organizing therapeutic and preventive measures. In this regard, a promising direction is the use of a new product “SV” (without restrictions on milk) for dry hoof baths, developed at the Federal State Budgetary Institution “FCTRB -VNIVI” for the prevention and treatment of the initial stages of diseases of the distal limbs of cattle. The results of studying the tolerability of the “SV” product in cows with single and repeated use indicate that the developed product does not have an undesirable negative effect on the clinical status, productivity, hematological, biochemical and pathomorphological parameters of experimental animals. The cows tolerated the effect of the product well; there was no decrease in milk yield and quality of milk, damage to the integrity of the skin and hoof horn, or any allergic reactions. The research results obtained confirm the safety of using the “SV” product for dry baths in practice in the recommended dosage regimen and the prospects for extensive production tests.