Hassan, H., El-Nesr, S., Osman, A., Arram, G. (2014). ULTRASTRUCTURE OF EGGSHELL, EGG WEIGHT LOSS AND HATCHING TRAITS OF JAPANESE QUAIL VARYING IN EGGSHELL COLOR AND PATTERN USING IMAGE ANALYSIS. Egyptian Poultry Science Journal, 34(1), 1-17. doi: 10.21608/epsj.2014.5303
Hanan Hassan; S. El-Nesr; A. Osman; G. Arram. "ULTRASTRUCTURE OF EGGSHELL, EGG WEIGHT LOSS AND HATCHING TRAITS OF JAPANESE QUAIL VARYING IN EGGSHELL COLOR AND PATTERN USING IMAGE ANALYSIS". Egyptian Poultry Science Journal, 34, 1, 2014, 1-17. doi: 10.21608/epsj.2014.5303
Hassan, H., El-Nesr, S., Osman, A., Arram, G. (2014). 'ULTRASTRUCTURE OF EGGSHELL, EGG WEIGHT LOSS AND HATCHING TRAITS OF JAPANESE QUAIL VARYING IN EGGSHELL COLOR AND PATTERN USING IMAGE ANALYSIS', Egyptian Poultry Science Journal, 34(1), pp. 1-17. doi: 10.21608/epsj.2014.5303
Hassan, H., El-Nesr, S., Osman, A., Arram, G. ULTRASTRUCTURE OF EGGSHELL, EGG WEIGHT LOSS AND HATCHING TRAITS OF JAPANESE QUAIL VARYING IN EGGSHELL COLOR AND PATTERN USING IMAGE ANALYSIS. Egyptian Poultry Science Journal, 2014; 34(1): 1-17. doi: 10.21608/epsj.2014.5303
ULTRASTRUCTURE OF EGGSHELL, EGG WEIGHT LOSS AND HATCHING TRAITS OF JAPANESE QUAIL VARYING IN EGGSHELL COLOR AND PATTERN USING IMAGE ANALYSIS
1Fac. of Agric. Poult. Prod. Dept. Fayoum Univ., Egypt.
2Fac. of Agric. Poult. Prod. Dept. Fayoum Univ., Egypt
3Anim. Prod. Inst., Agric. Rese. Center, Ministry of Agric, Egypt
Abstract
This study was carried out to investigate the ultrastructure of eggshell, egg weight loss% and hatching traits of Japanese quail varying in eggshell color and pattern analyzed by image analysis. A total of 2900 eggs were selected from the four groups of eggshell color and pattern (1st group [light eggs (none or rarely of very small spots)], 2nd group [dotted eggs (small and much spots)], 3rd group [spotted eggs (large and many spots)] and 4th group [dark eggs (very large and few spots)] to perform two consecutive hatches of eggs collected for 12 days consecutive each. Eggs of the first hatch were stored for 11 days at room temperature (ranged from 21-25°C and relative humidity 50-60 %) and the eggs of the second hatch were stored for 11 days in a refrigerated room (17○C and 70 % relative humidity). The results of the present study are as follows: - The palisade and mammillary layers were not clear in light eggshell group compared to the other types of eggshell and this light eggshell color was the worst group - Light color eggs group had the highest values of red, green, blue, hue and lightness, egg weight loss % at different periods of storage and embryonic mortality % (mid and late) and it had the lowest values of hatchability % ,hatchability/fertile eggs % (H/F %), chick weight and chick weight %. - Dark color eggs group had the highest values of hatchability % and H/F %. It had the lowest values of red, green, blue, hue and lightness, egg weight loss % at different periods of storage and early embryonic mortality %. - Egg weight loss% increased with increasing time and temperature of pre-incubation storage - Hue of Japanese quail eggshell positively correlated with each of egg weight loss % and embryonic mortality (mid and late) but it negatively correlated with each of hatchability % and H/F%. Saturation of quail eggshell positively correlated with late embryonic mortality % and negatively with H/F %.
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