Brooding is generally divided into parental brooding and artificial brooding. As long as the birdhouse brooding is completed, the crane will not be allowed to run out, and other tasks such as protecting and training eating will be carried out by the pro bird. However, under cage conditions, this brooding method is not conducive to the training and flying of young cranes. Therefore, cranes generally advocate artificial brooding. Yancheng Nature Reserve also uses artificial brooding methods. The red-crowned crane is an early adult bird. It can wink after being hatched. The body is covered with light yellow velvet feathers, the middle of the back is deeper, and the chest and abdomen are lighter in color. From the base to the middle of the pupa, the milk is yellow, the pimple is silver-gray, and the white broken shell teeth, the thick toes, can stand and walk after 10 hours. According to the behavioral biology and growth characteristics of red-crowned cranes, the key to artificial brooding is to pay attention to three links: temperature control, boiling water, food supplement, and calcium supplementation. The temperature of the crane that has just started the temperature control should continue to be warmed up, and the temperature and the hatching temperature should be similar to each other, about 36.5°C. Afterwards, the temperature should be reduced day by day, but the cooling rate should not be too large, generally controlled at 0.1 to 0.8°C per day. After 15 to 20 days, it can be reared in a brooding room, and the room should be kept warm. At this time, an umbrella can be used to maintain the temperature. In addition, the cooling of the heatstroke is also a measure that must be taken in the south. Because red-crowned cranes are winter migratory birds in East China, they are not heat-resistant. In particular, young cranes, whose function of regulating body temperature is not perfect, so the cooling of the sun is very important for brooding. You can take measures such as setting up a water bath, a pergola, taps, etc. in the cage. Once you find that the crane opens its mouth, you have to cool the young crane. You can put it into a water bath and let it play. You can also use a tap to spray the water. Spray cool, cool water to cool it. The boiled water starts to eat the young cranes. Generally, the boiled water is used 24 hours later. After the boiled water is filled with a plastic dropper, a drop of water is hung outside the dropper and shaken in front of the fledgling to attract food. The fledgling crane will suck the pipette and suck it. water. After two days of eating, a particularly healthy crane can eat up to 30h in advance. When food is eaten, it is necessary to make the food soft and hard, and the food block should be small to large. The amount of food should be increased from small to large. Eat less meals and avoid overgrowth and obstruction and indigestion. When eating, it is mainly breaded or cut into small pieces of fish. Afterwards, some green feed, grains, and multi-dimensional elements are gradually added to promote growth and development. Calcium supplementation and sporting red-crowned cranes are very good for growth and development of young cranes because they are early birds. If calcium deficiency or lack of exercise occurs at this time, leg abnormalities can easily occur. Therefore, calcium supplementation and exercise are also key measures for brooding. The author used the method of laying yellow sand on the sports ground to allow him to eat, and at the same time depending on the health condition, he added an appropriate amount of calcium tablets every day. The keeper must also pay attention to drive out the young cranes, but they must be moderate, otherwise they will be counterproductive.
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