الفهرس 
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Abstract
Accurately, 240 samples of raw chicken (breast muscle) and frozen half cooked (chicken nuggets and chicken frankfurter) (80 of each) were collected from some supermarkets in Cairo governorate and transported in an ice box and transfer to lab of AHRI (Dokki) without undue delay. The samples were examined for determination of antibiotic and heavy metals residues.
The incidence of Tetracycline and Gentamicin in raw chicken, frozen half cooked chicken nuggets and frozen half cooked chicken frankfurter were (12.5% and 5%) , ( 40 %and 0%) and ( 25 % and 58.75 %), respectively, where as other examined B-lactam, Penicillin, Macrolides, Streptomycin and Erythromycin were not detected in the examined samples.
The obtained results illustrated that the mean values (ppb) of Tetracycline residues in raw chicken and frozen half cooked (chicken nuggets and chicken frankfurter) were (2159.8 ± 422.51), (3837.813 ± 379.8) and (3130.5 ± 303.11), respectively.
In addition, the mean values (ppb) of Gentamicin residues in raw chicken and frozen half cooked chicken frankfurter were 4741.5 ± 965.04 and 7189.936 ± 2029.66.
According to safe permissible limit recommended by EOS (2010 (a)), Acceptability of examined samples on their level of Tetracycline residues(100 ppb) were 87.5% ,60% and 75 % of raw chicken and frozen half cooked (chicken nuggets and chicken frankfurter) , respectively, were accepted, while 12.5 % , 40% and 25 % of raw chicken and (chicken nuggets and chicken frankfurter) , respectively were unaccepted.
Acceptability of examined samples on their level of Gentamicin residues (50 ppb), 95%, 100% and 41.25 % of raw chicken, frozen half cooked chicken nuggets and frozen half cooked chicken frankfurter, respectively, were accepted, while 5 % and 58.75 % of raw chicken and chicken frozen half cooked frankfurter were unaccepted.
Concerning the mean value (ppm) of Cadmium in raw chicken and frozen half cooked (chicken nuggets and chicken frankfurter) were 0.073 ± 0.006, 0.08125 ± 0.014 and 0.0355 ± 0.006, respectively.
Accordingly , Acceptability of examined samples on their level of Cadmium residues, 60% and 82.5 % of examined raw chicken and frozen half cooked chicken frankfurter were accepted, while 40 % , 100% , 17.5 % of raw chicken and frozen half cooked (chicken nuggets and chicken frankfurter), respectively were unaccepted according to safe permissible limit (0.05ppm) recommended by EOS (2010 (b)).
In this study, the lead was not detected in any of examined raw chicken, chicken nuggets and chicken frankfurter samples.
Public health significance of these serious residues in chicken meat and chicken meat products and possible sources of their contamination as well as some recommendations to avoid them in such food items were discussed.