Abstract:
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This study was conducted to detect the effects of Sulfanomide drug on table egg quality and to
determine the withdrawal time after which eggs are save for human consumption. Sulfanomide (Coccidiofan)
was administrated to 36 layer hens, at a dose of 1g/liter in the drinking water for three 3 consecutive days.
Traits studied were egg quality traits and the presence of drug residues. Results showed that treatments
were significantly (P<0.05) different in Egg shell weight and Eggshell thickness, estimates were 6.61±0.10,
6.61±0.10 and 7.09±0.23 for the first trait and 0.22±0.01, 0.26±0.012 and 0.28±0.012 for the second trait in
the control, treated and withdrawal groups respectively. For internal egg traits, yolk height, Yolk width and Yolk
index were significantly (P<0.05) affected. The control group recorded 16.02±0.37, 34.79±0.28 and
46.19±1.30 for the three traits, treated group estimated 15.64±0.19, 38.11±0.30 and 39.69±0.55 while the
group in the withdrawal period recorded 15.10±0.21, 39.69±0.55 and 42.47±0.62 respectively. The
percentages of mottled, blood spotted, misshaped and rough shelled eggs were high in the layers in the
withdrawal period compared to layers in the control group which reported 0.0% for all traits and layers in
treated group which recorded lower percentages than those in the withdrawal period. Results also showed
that the drug residues appeared in eggs in second day and third of treatment at 1.80 level and the level
increased to 2.22 in the first and second day of the withdrawal period then decreased at increasing rate to
reach 0.22 on the fifth day of the withdrawal period. So it is better to avoid eggs consumption during treatment
and withdrawal periods. |