General principles of rating fission products uptake into the body of farm animals and radionuclide concentration [n the forage

Some principles of establishing norms for the content of main fission products such as Sr89, Sr90, I131 and Cs137 in fodders for farm animals are described. These norms are established on the bases of the norms of radionuclide contents in human foods. It is emphasized that no generally applicable norms of radionuclide contents in the diets of farm animals can be worked out because of the great diversity of possible radiation situations, of geographical zones, and of conditions of agricultural production