Efficiency of disinfectants for disinfection of chicken incubating eggs

 The authors studied under experimental conditions the effect of disinfectants "Doctor Life-Dez", "Mirmekon 631 V", "Ecodesrico" for the sanitation of chicken incubation eggs. The studies were carried out on the basis of the scientific research consulting and diagnostic center for poultry  farming of the St. Petersburg State University of Veterinary Medicine  (SPbGUVM). For the study, an incubation egg obtained from a parent flock of Loman LSL-Classic hens was used. The incubation of eggs was carried out in a Russian-made incubator "Stimul IP-16 M" on the basis of the NKDC for poultry farming. As a result of the studies carried out, a high bactericidal activity of the preparations was established (according to the concentrations determined by the manufacturer of the preparation - 0.3% and 0.5%), but different harmlessness for developing embryos and hatched chickens. According to the results of the use of the disinfectant “Ecodesrico”, the residual toxicity of the preparation was revealed in the concentrations used (0.3% and 0.5% for the preparation) for developing chicken embryos. As a  result of inoculation and cultivation of washes taken from the shell surface of incubation eggs laid for incubation without preliminary disinfecting treatment, cultures of microorganisms of the infecting strain of  Pseudomonas aeruginosa were isolated, which were absent during the treatment of incubation eggs with the studied preparations. It was found that disinfectants significantly reduced the contamination of hatching eggs with microflora: in the experimental groups, the growth of single colonies of opportunistic microorganisms Bacillus and Staphylococcus was observed, but, in general, the samples remained sterile throughout the entire period of incubation. Thus, it was concluded that disinfecting the surface of the shell of hatching eggs with the used preparations ensures complete disinfection of eggs from pathogenic cultures of microorganisms and improves the quality of hatching of chickens. 

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