الفهرس 
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Abstract
A total of 120 random samples of chilled minced meat , meat block, chicken cuts (breast and thigh ) and fish flesh (20 of each) were randomly collected from different shops and markets at different production dates in El-Menoufia governorate, Egypt. The present study was planned to assess their bacteriological profiles. Concerning E.coli , it was isolated from meat block, minced meat, chicken breast, chicken thigh, Mugil cephalus, Oreochromis niloticus by a percent of 45%,30%,45%,30%,20% and 30% respectively.By Using conventional methods, E.coli strains isolated from chicken thigh cuts were o111:H2(1),o125:H21 (1),,o114:H21(1) ,,O119:H4 (1),, O124(1),,O55: H7(2),,O86(1), O126 (2) While in chicken breast cuts ,the isolates were O126(1),,O26:H11(1),,O44:H18(1),O55: H7(1),O86 (1),O124 (1),,O125 :H21(1) a total result of 6 strains of EHEC and 6 strains of EPEC in breast cuts and four strains of EHEC,six strains of EPEC, one strain of ETEC and one strain of EIEC in thigh cuts .Staph.aureus count in different examined samples were 4.28×103±.086×103, 5.13×103±2.04×103 in chicken breast and thigh respectively also 4.96×103± 0.37×103, 1.86×103± 0.33×103in minced meat and meat block respectively.In addition to 4.54×103±0.60×103, 5.54×103 ±1.60×103 in fish flesh samples either Mugil cephalus or oreochromis niloticus respectively.The variation in the results may be due to the unadaquate slaughtering practices, handling from producers to consumers and the effectiveness of hygienic measures applied from production until consumpation .It is evident from the obtained results that the positive examined samples of minced meat, meat block, chicken breast ,chicken thigh, Oreochromis niloticus and Mugil cephalus for Salmonella by percent of 20%, 15%, 20%, 25%, 15%, 10% respectively with the predominant strains of S. enteritidis , S. typhimurum and S.virchow , but isolates were S.Enteritidis, S.Typhimurum , S.Virchow and S.Kentucky in breast cuts and S.Enteritidis, S.Typhimurum and S.Kentucky in thigh cuts while Salmonella strains in examined samples of meat block were S.Enteritidis, S.Typhimurum and S.Virchow While in minced meat were S.Enteritidis, S.Typhimurum , S.Virchow Also showed Salmonella strains in examined fish meat samples that in mugil cephalus were S.Enteritidis, S.Typhimurum and in oreochromis niloticus were S.Enteritidis, S.Virchow and S.Infantis.from the previous results, the incidence of E.coli, Salmonella and Staph.aureus might be attributed to lack of hygienic measures, poor sanitation, excessive handling, ignorance of workers and vendors for hygienic measures and also using contaminated equipement and machines during preparation of meat with its various types in addition to bad storage practices.