The Comparative Estimation of Animal Radiosensitivity.

Technogenic environmental pollution is the factor of destabilization of natural and agricultural ecological systems. Among various kinds of beings agricultural animals are considered as one of the most vulnerable components of ecosystems to the influence of technogenic factors including ionizing radiation. Therefore, the generalization of experimental data and mathematical modeling are necessary to forecast the mortality of irradiated animals. In this research the numerical. parameters of deaths of the dogs with the body weight of 10-12 kg are considered in detail depending on the dose and the dose rate of external irradiation. The verification of the received relationship is carried out. The comparison of LD(50) values for adult sheep, pigs, dogs, donkeys and mice at the fixed dose rate of 4 Gy/h has shown that the most sensitive to the external irradiation are ruminants - sheep, followed by dogs, donkeys and pigs, and rodents - mice close this series.