Comparative Study of the Effect of Some Disinfectants on Embryonic Mortality, Hatchability, and Some Blood Components

Abstract

The present study was carried out to investigate the effect of some different chemical egg disinfectants against bacteria and to study its effect on embryonic mortality, hatchability and some blood biochemicals parameters. A total of 525 hatching eggs (38-wk-old Golden Montazah) were randomly distributed to seven equal groups. The first group was disinfected by formaldehyde. The second, third and fourth groups were sprayed by 3, 5 and 7% Hydrogen peroxide. While, the fifth, sixth and seventh groups were sprayed by 0.1, 0.5 and 0.7% TH4 (DDAG). Total bacterial counts on hatching eggshell surface and chicks' caeca salmonella counts, embryonic mortality, hatching percentage, hatched chicks' weight, and relative weights of liver and spleen were measured. Serum total protein, albumin, globulin, glucose, uric acid, creatinine, alanine transaminase, aspartate transaminase, and triiodothyronine concentrations were determined. Results indicated that the total number of bacterial counts were significantly higher at pre-disinfection than post-disinfection. The lowest number of bacteria detected was that of the 7% of Hydrogen peroxide and 0.7% TH4 groups. Total embryonic mortality was significantly lower, while, hatchability percentage was higher in the formaldehyde group than the other disinfectants groups. Also, hatchability traits were significantly better while, embryonic mortality were significantly lower in the 5% Hydrogen peroxide group. In addition, protein profiles, glucose, and triiodothyronine concentrations were significantly lowered, while, kidney and liver functions were significantly higher in the formaldehyde group. While, its values improved in the 5% Hydrogen peroxide group. In conclusion, our results recommended using 5% Hydrogen peroxide as egg disinfectants against bacteria due to its effectiveness and ease of application

Effects of Sanitizers on Microbiological Control of Hatching Eggshells and Poultry Health during Embryogenesis and Early Stages after Hatching in the Last Decade

“…Formaldehyde is the primary sanitizer in the routine sanitization of hatching eggs on European poultry farms (for example, Germany and Poland), as well as in Brazil and Egypt, among other countries [ 2 , 7 , 8 , 9 , 10 ]. However, it has genotoxic and cytotoxic properties [ 11 ] that subject poultry farmers and chicken embryos to a high risk of hazardous chemical exposure and possible irreversible bodily harm.…”