Evaluation of the cytogenetic effect of chronic incorporated radiation in newborn calves in the Bryansk region

A quantitative assessment of micronuclei in the erythrocytes of peripheral blood of newborn calves in Novozybkov district, Bryansk region was carried out. Chronic radiation exposure leads to an increase in the proportion of micronuclei in the erythrocytes of newborn calves compared to animals in the control group, which were kept in ecologically clean conditions in the Tula region. Analysis of the peripheral blood erythrocytes of newborn calves revealed that per 1000 erythrocytes account for 0.68±0.06 % of micronuclei. Low levels of variation coefficients obtained during statistical processing indicate the uniformity of the trait and confirm the significance of our results. It is known that in the period of fetal development, the fetal liver is the organ of blood formation and, apparently, in the process of differentiation of red blood cells, cesium - 137 causes damage to the genetic material, resulting in the appearance of micronuclei in them. Genetic disorders at the cellular level may precede the development of pathologies of various nature.