Abstract:
Today in many countries is the large development and fruit production of biologically active substances, growth stimulators, premixes, preparations of microorganisms that are used to increase the percentage of viability in animals and birds, body mass, immune status and organism physiological resistance. As biologically active status in many groups of actinomycetes are streptomycetele. Use of actinomycetes as a source of biologically active substances is one of the main prposes of studing. So was studded the biological blood properties and immune post vaccinated status of chickens which was feeding with supplement of biomass of streptomycetes. Data are presented confirming the low post-vaccination immune efficiency in chickens vaccinated at one day old and immune stimulating effect in case the vaccine was administered in combination with biomass streptomycetes by recommended schedule.