THE REVERSE OF THE MEDAL FEED ADDITIVES IN THE ENVIRONMENT/

The aim of the paper is the probable scenario of changes which can be observed in the soil under influence of feed additives used in animal farming which reach the soil with animal's manure. The feed additives (e.g. antibiotics) inactivate microbial community. It leads to increas e of plant debris in soil and elements are not available for plants, t heir production (primary production) fall down. Reduction of bacteria could cause loss of food source for soil fauna (protozoans, nematodes, microarthropods etc.) and its reduction. The reduction of soil animal s community causes reduction of the soil community biodiversity and de stabilisation of soil ecosystem. Those processes can cause the degrada tion of the soil and decrease of its productivity.