Effects of modified atmosphere packaging nitrogen gas in storage Ross 308 broiler hatching eggs on eggshell conductance values and some hatchability traits

Abstract

Modified atmosphere packaging (MAP) is considered as an effective and common method for packaging and storing fresh meat products, but few studies have examined the usage of MAP in egg. In this article, the effect of MAP storage on the functional eggshell conductance and Some Hatchability Traits. Egg storage beyond 7 d is associated with an increase in incubation duration and a decrease in hatchability. Negative effects of prolonged egg storage may be caused by changes in the embryo, by changes in egg characteristics, or by both. An adjustment in storage air composition may reduce negative effects of prolonged egg storage because it may prevent changes in the embryo and in egg characteristics.An experiment was conducted to investigate the effects of high N2 concentrations in the storage air on eggshell conductance and hatchability. 750 Eggs were stored period for 7, 14 and 21 day (250 eggs/ period) were in plastic bags in 3 different storage atmosphere compositions: control treatment Unpackaged, 100% Air treatment , 100% N2 treatment. The storage temperature was 14°C and a pressure of 10 mbar. Results showed The interaction between the Modified atmosphere packaging factor in favor of the treatment of nitrogen gas and a storage period of 14 and 21 days to a significant decrease in the measured conductance values G1, g2 and conductance constant (K).The Modified atmosphere packaging factor for nitrogen gas and air to a significant decrease in the measured conductance values (G1) and conductance constant (K). The factor of storage duration of broiler breeder hatching eggs and caused a significant decrease in the measured conductance values G1 and g2. The interaction between the Modified atmosphere packaging factor for the treatment of nitrogen gas with different storage periods (7-14-21 days) a significant increase in the percentage and hatching from fertilized eggs as a result of a significant decrease of early embryonic deaths. The use of the Modified atmosphere packaging factor to treat the of nitrogen gas in storing the hatching eggs to a significant increase in the hatching rate of fertilized eggs. The factor of storage duration of broiler breeder hatching eggs during the storage period of 7 days caused a significant increase in the percentage of early embryonic deaths, And it was found that there was no significant positive or negative correlation coefficient when studying the correlation coefficient between the conductance characteristics (conductance, conductance constant) and hatching traits (the percentage of hatching from fertilized eggs, early, medium and late embryonic mortality, live and dead click embryos)