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Abstract
A total of 150 samples (50 each of brown, white shelled and double
yolk eggs) in addition to 50 samples ofbalady eggs (25 each from markets
and farmers) were collected from different localities in Sharkia
governorate.
Out of 50 brown shelled egg samples examined, antibiotic residues
were detected in 30 samples (60%) while in white shelled 34 (68%) were
contained antibiotic residues. In double yolk egg, out of 50 samples 34
(68%), the residues of antibiotic could be detected.
Antibiotic residues were detected in 4 (16%) of Balady eggs
collected from fanners and 8 (32%) of Balady eggs collected from markets.
Antibiotic residues were detected in 5 samples (50%) out of 10
imported egg powder samples.
The withdrawal period of three common preparations of antibiotics
used for treatment of hens were studied