Effect of Storage Period on Egg Weight Loss, Hatching Weight and Hatchability Percentage of Incubated Egyptian Balady Eggs

An experiment was conducted to evaluate the effect of storage period (0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 days) of Egyptian balady eggs on egg weight loss during incubation, hatch weight and hatchability percentages. Either immediate setting of fresh egg or prolonged storage duration affected significantly the hatchability percentage (p 0.05). Regression equations as well as R2 values were estimated for weight loss during incubation, hatch weight and hatchability percentages with storage period length. The values of R2 were 0.95, 0.87 and 0.85 for weight loss during incubation, hatch weight and hatchability percentages with storage period length. Also, negative high correlation between weight loss and both of hatching weight and hatchability percentage was estimated. It was suggested that incubation of prolonged stored eggs affected negatively on incubation and hatching quality characters of Egyptian balady eggs.