EN
Since January 2006, and in accordance with EU legislative procedures, the use of antibiotics as growth promotors in feedingstuff has been prohibited. Withdrawal of antibiotic growth promoters in an animal feeding has resulted in a search for new alternatives such as: prebiotics. At present prebiotics are used mostly for preventing and controlling the negative consequences appearing in the aftermath of the prohibition of antimicrobial applications as animal feed additives. The article presents the effect of prebiotics (mannan-oligosacharides, fructo-oligosaccharides, galacto-oligosaccharides) on humoral and cellular mechanisms of specific and non-specific immunity in livestock.