During the summer hatch, pay attention to the supply of temperature so as to prevent the incubation from failing.
1, appropriately increase the number of cool eggs and water spray and time. The water was sprayed once a day from the 8th day of embryonic development and sprayed twice a day from 12 days of germination. Water was sprayed three times daily from the 16th day of embryonic development until hatching. After 5 days of embryonic day, cool eggs are delivered once every morning and evening, about 20-25 minutes each time, so that the eggshell temperature drops to about 32°C, and then start the hatch.
2, properly lower the temperature inside the machine. Generally 0-3 days embryonic age 37.8°C, 4-7 days embryonic age 37.5°C, 8-14 days embryonic age 37.6°C, 15-20 days embryonic age 37.5°C, 21-25 days embryo age 37.2°C. 26 days of embryo growth on the bed.
3, prevent excessive temperature incubation. Since most of the hatcheries currently do not have air conditioners installed, the room temperature often reaches 30°C or higher in the hot season. Therefore, after the embryos of the hatching eggs have reached 16-17 days of embryonic age, the embryos themselves generate heat and are easily overheated, even if the heating devices in the hatchery are long-term. In the heat-dissipation and vent holes all open, still can not fully discharge the metabolic heat of embryonic development, in this case should be opened before and after the door a treaty a few centimeters of the gap in order to accelerate the heat, so as to prevent overheating.
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