Abstract: The aim of this work was to perform preliminary studies to compare egg white and perivitelline membrane proteins from different avian species (hen, goose, turkey, quail and partridge) by Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis, (SDS-PAGE). Separations were run on commercial 20% polyacrylamide gels and with 12% and 4% polyacrylamide for the resolving and stacking gels, respectively. 5 eggs of each birds were examined. White and perivitelline membrane of eggs mixed and used. Ten μl of the sample solution were applied to the gel. Result showed in figures 1 and 2. The proteins of egg white were similar in hen, turkey, quail and partridge but was differ in goose. 4 majority bands of white proteins (ovalbumin, ovotransferrin, ovomucoid and lysozyme) observed in gel. The goose egg white proteins was very heavy and didn’t separation very well. Two bands with estimated molecular mass of approximately 28 and 70 kDa are majority. The molecular weight of bands are differ in experimental birds. The electrophoretic profile of turkey was more different but other profiles are similar
