EN
Contemporary oilseed rape varieties, without glucosynolates and erucic acid, are willingly eaten and severely damaged by some game species. The main originators of oilseed rape damages during autumn and winter are: red deers (Cervus elaphus L.), roe-deer (Capreolus capreolus L.), wild boar (Sus scrofa L.) and wild goose (Anserinae). Oilseed rape damages, visible in the spring, often make farmers decide to destroy cultivations. That is why, the two-year experiments were conducted, relying on different game damage simulation. The results of performed research showed a great yield differentiation related to the kind and percentage of damaged plants on a given field. The experiments showed that mechanic damage of plants had a significant influence on the quantity of yield but have no influence upon its quality.