Multiplex PCR detected 3 virulence genes (hila, spvC, and stn) (100% of Salmonella isolates). Salmonella Species were not isolated from organic egg contents. Serotype identification of four isolates was S. All of them were only isolated from conventional eggs with a percentage of 3.2%. Salmonella was detected in 4 samples (1.6 % from total samples). Mold and yeast count showed a mean value of 7.3×10 ± 3.8×10 cfu/ml and 4.2×10 ± 1.8 ×10 cfu/ml for conventional and organic eggs respectively. Staphylococcus aureus count showed a mean value of 3.1×102☓.1 ×10 cfu/ml for conventional eggs and 2.3×102 ± 2.7 ×10 cfu/ml for organic egg. Aerobic plate count showed mean values of 8.0×102 ± 4.6×10 cfu/ml for conventional eggs and 6.2×102 ± 3.2×10 cfu/ml for organic eggs, the coliform count showed a mean value of 4.6×102 ± 3.2×10 cfu /ml and 3.7×102 ± 2.6 ×10 cfu/ml for conventional and organic eggs respectively. microbiological examination for assessment of the sanitary quality and detection of incidence, serological and molecular characterization of salmonella, and subjected to chemical examination to detect the incidence of 2 antibiotic residues (oxytetracycline and tylosin) in both types of egg.

A total of 250 samples (each sample contains 3 eggs) were purchased from different retail stores (conventional and organic, 125samples for each). The present study was conducted in Kafrelsheikh governorate, Egypt. Microbial quality, Antibiotic residues, Conventional table eggs, Organic table eggs.Ĭhicken eggs are important as food to humans.

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