الفهرس 
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Abstract
A total of 30 random samples of marketed frozen fish fillets (Orechromis niloticus, Bagraus bayad and Pangasius bocourti (basa)) (10 of each) of weighting 500±100g were collected from different supermarkets from El-Mahala El-Kobra city, The samples were collected under aseptic condition and transferred to the meat hygiene laboratory, Faculty of Veterinary Medicine, Zagazig University. The samples were subjected to organoleptic and bacteriological examination.
The results obtained are summarized as the following:
i. Part one: - A survey work for examination of examined frozen fish fillet samples (Orechromis niloticus, Bagraus bayad and Pangasius bocourti ( basa) ) .
A- Organoleptic examination:
The mean values of overall acceptability of the examined frozen fish fillet samples (Orechromis niloticus, Bagraus bayad and Pangasius bocourti ( basa) ) were 12.87±0.05, 12.99±0.13 and 12.75±0.05, respectively.
B-Bacteriological examination:
A. Aerobic plate count:-
The mean values of APC count of the examined frozen fish fillet samples (Orechromis niloticus, Bagraus bayad and Pangasius bocourti ( basa) ) were 6.29±0.13 , 6.21±0.15, and 6.69±0.12 log 10 cfu / g, respectively.