Veterinary and sanitary evaluation of egg containers and egg disinfection
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Abstract
Based on the results of the microbiological evaluation of cardboard containers, the level of contamination was determined. With an increase in the period of its use, contamination with several microorganisms is observed. Regardless of the type of eggs, micromycetes (Aspergillus spp., Cladosporium spp., Penicillium spp., Enterobacter agglomerans, Corynebacterium spp., Escherichia coli) were induced from the transport container during its repeated (≥ 10) use at an average level of contamination (< 106-108 CFU/cm2). It has been proven that reusable cardboard containers can be an additional source of egg contamination. To determine the microbial contamination, 620 poultry eggs were used in the experiments, including quail (n = 120), turkey (n = 80), duck (n = 95), goose (n = 85), and chicken (n = 240). It has been proven that poultry eggs, regardless of their species, are contaminated (< 103 CFU/cm2) with Corynebacterium spp. and Bacillus spp. It was also found that waterfowl eggs were contaminated with Enterobacter spp. and turkey eggs with Lactobacillus spp. The Ufotek 2 unit was used to disinfect the test eggs. It produces both ozone and UV radiation. Increasing exposure to physical disinfectants showed a gradual increase in the bactericidal effect. It was found that the combined effect of ozone (100 mg/h) and UV irradiation (253.7 nm) for five minutes causes disinfection of poultry eggshells, regardless of their species.
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