Paderborn (dpa) – food chemist have demonstrated for the first time according to own statements, that antibiotics be included in the manure of crops and get into the food chain. Manure from pigs is often used for the fertilisation of fields. Antibiotics are livestock against infections. Prof. Manfred Grote said “As a result of increasing risks of antibiotic resistance are these results of particular importance”, from the University of Paderborn on Monday. The attempts on behalf of the North Rhine-Westphalia Ministry of environment were made with wheat and corn salad. In the grain of wheat were found 50 micrograms (millionths of a gram) chlortetracycline per kilo approximately. In the three-year study piglets were administered chlortetracycline and sulfonamide medication first. Then, the excretions of animals have been processed to manure and used for the fertilisation of fields. On the testing ground, were winter wheat and corn salad sown, harvested and then analyzed. In addition, the experts Hydrokultur tests carried out. After eight months, the departing drugs in the stored manure, as well as in the upper soil layers of organically fertilized fields were according to the finding. So far not succeeded, through crops out of güllegedüngtem ground to demonstrate the reception of antibiotics. «Our analysis of harvestable plants showed Antibiotikagehalte roots and green interests.» «And we were very surprised to find also in the grain of the final trace levels of chlortetracycline» Grote said. The study was conducted in cooperation with the Fachhochschule Soest and the federal nutrition and food in Detmold.