الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
Domesticated Japanese quail (cortunix coturnix japonica), is a generic term for a number of medium-sized poultry. Quail meat is becoming increasingly popular in Egypt from the technical and economic viewpoints. Therefore a total of 60 of quail samples were randomly collected from two different system (20 each): batteries (group I) and deep litter system (group II) of Ismailia city for determination of lead, cadmium, copper and zinc residual levels. The mean residual concentration levels were lead, cadmium, copper and zinc 0.244, 0.058, 5.902, 1.290 in quail meat samples for the group 1 reared in batteries system and were 0.136, 0.086, 6.092, 1.280for group II reared in deep litter system. Lead and cadmium levels in some quail meat samples were exceeded the Egyptian standardization limits and suggesting a health threat from pb and cd to the quail consumers. Battery rearing system is more hygienic than deep litter system from the point of heavy metals pollution of water and feeds of quail.