In the past two years, special poultry treasures have attracted a large number of farmers because of their high medicinal, ornamental, and edible value. They have become a popular breeding program for many farmers and it is particularly important to raise good chickens. Temperature: Temperature is the key to the success of hatching. Only the proper temperature for the normal development of the embryo can be obtained in order to obtain a better hatching effect. The suitable temperature for the hatching of hens is 37.8°C. The temperature at hatching is set at about 37°C. Excessively high or low temperatures can affect the development of embryos. In severe cases, embryos will die. Humidity: Humidity also plays a significant role in embryonic development of hens. During the first week of incubation, the relative humidity should be kept at 60-65%; at 8-18 days, 50%; at 9-21 days, the chicks are about to emerge. The shell, in order to prevent chicks from being linked to the eggshell membrane, should be given a relatively high relative humidity, typically around 70%. Ventilation: As the embryo continuously absorbs oxygen and releases carbon dioxide during its development, in order to maintain the normal gas metabolism of the embryo, sufficient fresh air must be supplied. The carbon dioxide content in the air surrounding the breeding eggs cannot exceed 0.5%, and the embryo develops at more than 1%. Slow, high mortality, and weaker chicks, therefore, the air in the incubator must be kept fresh during hatching, and the vent holes in the middle of the incubation period do not need to be opened, but the vent holes must be opened later in the incubation period. Turning eggs: Artificial hatching usually turns the egg once every 3 hours or so. Eggs can be stopped after hatching for 18 days. The angle of turning eggs is generally 45 degrees forward or backward. Egg-lapping: The main function of continuation of eggs is cooling. Cone-meating is an incubation procedure in which eggs are incubated for a certain period of time and the incubator door is opened to allow embryos and eggs to drop in temperature. Eggs are generally carried at the same time as turning eggs. If the hatching conditions do not need to be aired within a suitable range, in the hot summer season, when the temperature exceeds 30°C, when the embryo hatches to mid-late stage, a large amount of body heat is generated by itself and the temperature inside the incubator is high, in this case It should be dried. According to the egg: The purpose of the egg is to observe whether the embryo develops normally. If it is found to be abnormal, you can find out the reasons so that you can obtain a good hatching effect and remove the lean egg, dead embryo egg, and shelled egg, etc. Three times, the first time in the incubation period of 5-6 days, the second time in about 11 days, the embryonic eggs are mainly detected to avoid deterioration during hatching, and the third time is generally when the egg is transferred. Place an egg on the side of the dish and check out the late embryos. China Agricultural Network Editor
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