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Effects of Plumage Color Modifier Genes and Storage Duration on Eggs Qualities Traits of Japanese Quail (Cortunix Japonica) Reared In Subtropical Climate

The main objective of this research was to study the effect of storage duration on egg quality of two genotypes with different feather color (yellow and wild-type quails or brown). Research variables were the weight of eggs, interior and exterior quality of eggs. 780 eggs from two groups of 45 quails per genotype, collected and stored during 13 days, were used. The tests used in our study were the Student’s t-test, the ANOVA and the post-ANOVA tests. The results carried out a significant difference among the different genotypes concerning the external eggs quality (P 0.05) onto weight loss. However, there is no significant effect (P>0.05) for internal quality of eggs. Concerning storage duration, it affected significantly the parameters of internal quality of eggs (P<0.001) such as height of egg yolk, height of white, egg yolk’s diameter, albumen and yolk index, Haugh unit. The best parameters were recorded from eggs storaged between 1 and 5 days. In the same way, eggs loss weight was significantly affected by storage time which ranged from -0.06 g to - 0.22 g. Relation between storage duration and color of feather affected significantly the level of eggs albumen.