Tkachenko T. Optimization of technological approaches to applying of nature immunomodulators in chronikally rayed calves.

Homotyn and CAFI preparates,young cattle, ionizing rays. The exploration results shows that here are immunosupressive changes in calve organisms under the influence of long lasting ionizing rays. Homotyn and CAFI preparates posess a positive influence on the organism. The action is displayed through the influence on proliferation, maturing and specializing of cells of limphoid row, stimulation of spontaneous rosetting, increasing of their functional activity.Beside immunocorrecting the radioprotective ability of preparates has been established.Applying of thymus preparates through all technological stages of cattle farming provides increasing of nature defence functions of organism and productive qualities of cattle, preserves the development of immunodeficite state, compence the influence of negative factors of environment, and radiation as well.