Residues of gentamicin in eggs following medication of laying hens

Abstract

1.	Gentamicin was injected subcutaneously and intramuscularly into 5 groups of 10 laying hens and its concentration was determined in albumen, yolk and whole egg.
2.	Groups 1 and 3 were intramuscularly injected with doses of 10 and 25 mg/kg while groups 2, 4 and 5 were subcutaneously injected with doses of 10, 25 and 50 mg/kg, respectively.
3.	The final gentamicin concentration in albumen was measured on d 3 for groups 1 and 2; on d 4 for groups 3 and 4, and on d 5 for group 5. Concentrations in yolk and whole egg were measured on d 7, 10 and 12.
4.	Gentamicin recovery was as follows: 2% in groups 1 and 2, 2·5% in groups 3 and 4, and 3% in group 5.
5.	Most of the residue (∼90%) was recovered from the yolk.

Acknowledgement

This research was supported by the University of Ankara Scientific Research Center Project No. 2001-08-10-040.