Retrospective analysis of infectious diseases in cattle in the Altai Region

Abstract

A retrospective study of infectious diseases of cattle in the Altai Region for the period from 2015 through 2025 was conducted, with the assessment of morbidity, mortality, and the structure of infectious pathology. The analysis was based on statistical veterinary reporting data from the Altai Region Department of Veterinary Medicine. From 2015 through 2025, 496 infected areas were registered, with 18378 animals affected and 114 animals dead. In the structure of infectious pathology, viral diseases accounted for 6 (35.3%) and bacterial diseases accounted for 11 (64.7%) diseases. The highest proportion of infected areas was accounted for by leucosis (61.5%), colibacillosis (10.9%), and infectious rhinotracheitis (8.9%). The highest mortality rates (100%) were found for rabies, pasteurellosis, and staphylococcal infections; high mortality rates were also reported for salmonellosis (48.0%), parainfluenza-3 (28.6%), and colibacillosis (25.7%). Among the infections that posed the greatest danger to calves of the early postnatal period, colibacteriosis (27 infected areas, 57.02% of the total number of dead animals), salmonellosis (9 infected areas, 10.53% of the total number of dead animals), pasteurellosis (9 infected areas, 5.26% of the total number of dead animals) and infectious rhinotracheitis (44 infected areas, 0.88% of the total number of dead animals). The retrospective analysis showed that leucosis, colibacillosis, and infectious rhinotracheitis were the leading infectious diseases in cattle in the Altai Region, and the highest mortality rates were recorded for infections specific to young cattle. These findings indicate the high vulnerability of young calves and the need to improve specific and non-specific prevention measures against infectious diseases in young cattle.