Dunayev Y. Development of the methods of duck incubatory eggs decontamination

Results of investigation of bacterial contamination of incubators and duck incubatory eggs, results of comparative estimation of up-to-date disinfectants concerning their effect on bacteria, H5N1 influenza virus and Mycoplasma gallisepticum and results of incubatory eggs surface disinfection are presented in the dissertation work. Biochemical and postmortem study concerning influence of disinfectants for preincubatory treatment of duck eggs on the immune state and physiological development of ducks from 1 to 60 days of growth. Terms of duck eggs treatment in the second part of incubation for the raise of air permeability taking into account birds' breed peculiarities have been determined. The most effective means for the raise of eggshell penetration (0.6 % sodium hypochlorite) was selected, which by the data of blood biochemical indices influence positively on the duck embryogenesis and does not spoil equipment of incubators. Technology of duck eggs incubation has been modified. It includes decontamination of eggshell using "Polidez", which is not carcinogenic and embryotoxic. There was also developed technology of shell air permeability raise in the second part of incubation by the treatment of duck eggs with 0.6 % solution of sodium hypochlorite. Use of this technology enables to raise in average on 2.9 % egg laying and obtaining of duck conditioned young growth. Key words: incubatory eggs, ducks, decontamination, disinfectants, gas- and vapor permeability of shell, egg laying.