الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 170 |  |  |
| | | from | 170 | | |
Abstract
Fish is considered one of the most essential foodstuffs due to its easily digestion and highly palatability; also it is an excellent source of protein of a high biological value, polyunsaturated fatty acids, valuable vitamins and minerals. There is an increasing demand for fish in Egypt to solve the problem of animal protein shortage. Unfortunately, fish is subjected to many risks of contamination and such contaminates may find their way through various sources.
Total of ninety (90) random samples of catfish (Claris lazera) (Elabasa, Alhalaka and Baher Albaker) (30 samples from each area) were collected from three area in El-Sharkia governorate, Egypt. They were well identified, packed in polyethylene bags, labeled then all of which well kept in icebox and immediately transferred under sanitary precaution and complete aseptic conditions without delay to the Meat Hygiene laboratory, Food Control Department, Faculty of Veterinary Medicine, Zagazig University. All collected samples were subjected to bacteriological examination and heavy metals analysis. where every catfish sample was divided into two parts ,one part for bacteriological examination and the other part kept by freezing for analytical examination.
The results obtained were summarized as the following:
1. Microbiological examination
(I) Aerobic Plate Count:
The aerobic plate count (APC) ranged from 4.30 to 7.39 log10 cfu/g with a mean value of 5.99±0.22 log10 cfu/g for the examined catfish collected from Elabasa, 6.08 to 7.63 log10 cfu/g with a mean value of 6.55±0.12 log10 cfu/g for the examined catfish collected from Alhalaka and 7.23 to 8.85 log10 cfu/g with a mean value of 8.29±0.15 log10 cfu/g for the examined catfish collected from Baher Albaker.