Open the air holes or doors and windows of the incubator, turn off the power, and let the egg temperature drop. When using cool eyelids to cool the eggs, stick the eyelids to the eggs and feel cool (32°C~35°C). Then slowly warm up and gradually reach the temperature required for hatching. In colder weather, the incubator is stable in temperature, well ventilated, and does not overheat in the machine. It may not cool eggs. When hatching in high temperature season, the whole box will have a large amount of eggs for hatching. When the ventilation is poor, cool eggs are needed. Especially for the post-hatching embryos, the metabolism of the embryos is strengthened. When the temperature is too high, cool eggs should be intensified. Every morning and afternoon, each time 15 minutes to 20 minutes.
In general, cool eggs have little effect on hatching rate. However, in the high temperature season, when the whole box is hatched, if the temperature inside the incubator is not cold, cold embryos and weak chicks will increase, and the hatching rate will decrease. The purpose of the cool egg is to disperse the excess heat in the incubator, allow the embryo to get more fresh air, stimulate the embryo at the same time and stimulate the development of the embryo.
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