[en] The seminar heard 8 papers whose topics were: safeguarding the development and testing of RIA kits for veterinary medicine; radicidation of fish meal; effects of radiosterilization on changes in vitamin A content in different fats in mixtures with cereals; technology of radiation processing of feed mixtures and litter for laboratory animals; methods of determining radiation processing of onions; operation of industrial irradiation plant GBZ 81 near Leipzig used for the radurization of onions; replacement of pesticides with radiation disinfestation; radiation sources for irradiation of foods and feeds. (J.P.)