Analyzing of Quail Eggs Hatchability, Quality, Embryonic Mortality and Malpositions in Relation to Their Shell Colors
نویسنده
چکیده
A total 2400 hatching eggs were obtained from Japanese quails breeders ranged from 100 to 150 days of age used to analyze the effect of shell color on fertility, hatchability, embryonic mortality and malposition as well as internal and external egg quality. Results revealed that shell color had significant effect on fertility and scientific hatchability while it doesn't affect commercial hatchability percentage. Moreover, there were significant effects for shell colors on early and late embryonic mortalities but not for mid embryonic mortalities. In addition, egg shell color represented some differences for embryonic malposition. Results also showed that egg shell color had significant effect on egg weight, length, width, volume, haugh unit, shell thickness and egg weight loss. But doesn't affect shape index, yolk index, yolk percentage, albumen percentage, shell weight and shell percentage. We recommended that spotted and white shelled eggs should be excluded from hatching procedures and used for another purpose because they recorded the lowest scientific and commercial hatchability percentages, highest early embryonic mortalities, the lowest egg volume and shell thickness as well as the highest values for egg weight loss during egg storage.
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