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BackgroundThe present study was designed to evaluate Ciprofloxacin residue and their impact on some biomolecules (albumin, total protein and cholesterol) in eggs of laying hens after oral administration. For that purpose, One group (A) of laying hens (n = 20) were orally administered 10 mg⁄kg ciprofloxacin for five consecutive days. The second group (n = 10) was untreated controls. Eggs were collected from day one of treatment and up to 25 days after withdrawal of treatment. Egg white and yolk from each egg were separated, and ciprofloxacin residues and biomolecules were analyzed by high-performance liquid chromatography method with fluorescence detection and humalyzer having commercial assay kits respectively.ResultsCiprofloxacin was detectable in egg white on the first day of treatment in higher concentrations (1755 μg⁄kg) while at lower concentrations (362 μg⁄kg) in egg yolk. In both medium, concentrations increased during five days treatment period. After withdrawal of treatment, eight days and fourteen days were required to deplete the drug residue below the established LOD in albumen and yolk respectively. On the other hand, cholesterol level increased while albumin and total protein level decreased during treatment period. All these biomolecules returns to their normal level at about seventeenth or eighteenth day from the day of treatment. In all cases, the differences in drug residue concentrations and biomolecules concentrations during treatment and post treatment in egg were found significant.ConclusionBased on the time needed for residue to deplete below the LOD, we can estimate that, within twenty days of treatment period, egg contents could contain harmful residue which can deplete the nutritional value of egg and thus could cause severe disease for consumer as well whereas it is safe after that period.

Ciprofloxacin residue and their impact on biomolecules in eggs of laying hens following oral administration