Age-related resistance of cattle to leukemia virus

¹ Kazan State Academy of Veterinary Medicine by N.E. Bauman, Sibirsky tract 35, Kazan city, 420029, Russia
² Mari State University, Lenin Square 1, Yoshkar-Ola city, 424000, Russia

^* Corresponding author: smolentsev82@mail.ru

Abstract

The emergence and spread of the epizootic process of infectious diseases is characterized by a variety of biological, natural-geographical, socio-economic, and other factors. The question of the age dynamics of animals infected with HCV remains important. The article describes the results of studying the age dynamics of HCV infection and changes in the biochemical status of cattle blood. These data indicate that the features and patterns in the development and manifestation of bovine leukemia do not depend to a small extent on the age of the animal. In general, with increasing age of cows, the intensity of the infectious process increases. According to our data, a gradual increase in the infection rate of livestock over the 3 years of the study was observed up to the age of 7 years. From 30.9 and 32.8% in cows aged 2 to 3 years, to 61.0 and 65.7% of infection in cows under 7 years old. Cows older than 7 years had a significant decrease in the level of infection with HCV. However, as studies have shown, the state of metabolism of cows also plays an important role in the development of the infectious process. Disorders of protein metabolism, a decrease in the level of globulins in the blood can contribute to the acceleration of the development of the infectious process caused by VLCRS.