In present report, the study of the effect of highland environment on the hatchability of lowland chickens was conducted by both incubation under artificial normobaric and hypoxic conditions at lowland and adding oxygen at highland using an automatic hypoxic simulation incubator designed by us. The results gathered from analyzing the data of embryonic mortality and hatchability of all treated groups and control groups showed that incubation under artificial normobaric and hypoxic conditions which is similar to the conditions at 2,900- meter altitude resulted in an increasing embryonic mortality during the late phase of the incubation and the hatchability is similar to that of the control group incubated at 2,900-meter altitude. On the other hand, incubation with adding oxygen at 2,900-meter altitude decreased significantly the embryonic mortality during early and late phase of the incubation. Above results indicated that the oxygen deficit is the main factor that causes low hatchability at 2,900-meter altitude.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 07.21, 2006
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