Sun Junfeng, a farming school in Jiuquan Prefecture, Gansu Province, has relatively fast growth and relatively high nutritional requirements. Its body temperature regulation function is imperfect during young chicks, and its ability to resist diseases is weak. Therefore, careful care and slight negligence are necessary. All kinds of diseases occur and die. In production, preventive measures must be taken to reduce losses. 1, in strict accordance with immunization procedures inoculation immunity. Large groups of confined chickens can easily get sick without paying attention, especially Marek’s disease, Newcastle disease, chicken bursa, and infectious bronchitis. Once these infectious diseases are transmitted, they will be difficult to control and will result in devastating losses of chickens and even chicken farms. Therefore, we should take the principle of prevention as our priority, and we must take the initiative to immunize according to the immunization program. The formulation of the immunization program should be based on the type of pathogenic microorganisms in the field or the area. If chicks are introduced, effective immunization procedures must be requested from the donors. If there is no epidemic in the local area, they should not be vaccinated for the time being to avoid contaminating the area due to vaccination. Only this kind of disease has occurred. The occurrence and prevalence of vaccination can only be achieved by vaccination. 2, timely drug prevention. Relevant statistical data indicate that chicken fleas are the leading cause of death in chickens, and coccidiosis is also one of the leading causes of death during brooding. According to the epidemiology of the two diseases, antibiotics should be added to feeds before 3 weeks of age. 0.2% oxytetracycline and 0.04% furazolid can be added to the diet to prevent the development of the disease. After 15 days of age, coccidiosis should be prevented. Especially in a high-density, warm and moist environment, drugs must be used for prevention. 30-60 ppm of chlorophenylguanidine and other drugs can be added to the feed. The drugs used must be accurately weighed and mixed to avoid drug poisoning, and a new drug should be replaced after one or two years of treatment for coccidiosis drugs to prevent drug resistance. 3, to prevent sudden changes in temperature and humidity and poor ventilation. If the brooding is not well insulated and the temperature is low, the chicks will be difficult to maintain body temperature balance for a long period of time. In severe cases, they can be frozen to death. If the indoor temperature is too high, it is prone to catch a cold when the windows and doors are opened occasionally. The indoor air is dirty, the ventilation and ventilation are not enough, the temperature is fluctuating and drastic changes, and moist, contaminated padding and mildewed feeds are used. It is often the cause of pneumonia in young chicks; some emphasize warmth, and air does not circulate, resulting in suffocation; some use high-powered light bulbs for warmth and heat death due to high humidity; excessive temperatures and insufficient humidity can cause dehydration in chicks. The paws dry up. This is due to the fact that the temperature, humidity, and air in the brooding room are not adjusted, resulting in a bad brooding environment and causing the chicks to suffer from growth retardation and death. Among the above factors, the temperature is the most important, and the temperature used in the brooding period is flexible with the season, climate, type of brooder, broiler's constitution, age, etc. Do not ignore ventilation while maintaining the temperature of the brooding house. Gas, but do not avoid thunder and drafts, to avoid blowing the wind directly to the chicks. Humidity has a great influence on the growth and development of chicks. In the first 10 days, indoor relative humidity is 60-65%. 4. Supply full price balanced feed to prevent nutritional diseases. Single feed species, lack or lack of certain nutrients, can easily lead to various nutritional deficiencies. For example, if corn contains less calcium and phosphorus is insufficient, skeletal malformations and weakened physique may occur in the long-term use of this diet. In the case of vitamin D deficiency, dysplasia is easily caused, and tendons and bones are weak and easily bent. Legs are weak and deformed. In the absence of selenium and vitamin E, with white muscle disease, many regions in our country lack selenium, and selenium is also lacking in the feed produced in these areas. Therefore, attention must be paid to adding selenium compounds to the feed. Nutritional deficiency diseases can cause massive deaths if no treatment is taken. Therefore, where conditions permit and farms, according to feeding standards to provide high-quality full-price balanced diet, if conditions are limited, a variety of feeds should be mixed feeding, so that nutrition can be complementary. 5, strict disinfection, prevention of umbilical infection. Insufficiency in disinfection of hatchery, brooding room, eggs, and various utensils causes E. coli, staphylococcus, etc. to invade yolk sac through inadvertently leaking umbilicus, resulting in inflammation of omphalitis. Therefore, formalin fumigation is used for hatching. Room, brood room, eggs and various utensils for disinfection. In addition, the belly button umbilicus should be separated separately and carefully treated with room temperature 2-3 degrees Celsius above the normal chicken body temperature, and a therapeutic amount of antibacterial drugs should be added to the feed to reduce the mortality rate of the disease by strengthening the feeding management. 6, timely "open drink" to prevent dehydration. Feeding large numbers of chicks, because of long transport time, or preparations such as vaccination, so that the chicks to postpone the "drinking" time too long; or when the water is fed, the chicks do not drink water, or plug the drinking fountains, or drinking fountains too Less, resulting in not drinking water in time, the chicken body caused by excessive water loss. The dehydration of chicks showed weight loss, dryness of paws, convulsions, falling eyes, and finally failure and collapse. The first thing a newly hatched chick should do is to drink water within 24 hours, so that it starts to drink when it does not feel thirsty, and promotes its metabolism, so that no gestate can die and dehydration can occur. The outbound chicks should drink 5% glucose and 0.1% vitamin C solution within 3 hours of admission to enhance physical fitness, relieve stress, and promote the discharge of harmful substances in the body. 7, to prevent poisoning death. When drugs are used to treat and prevent diseases, it is necessary to calculate the amount of drug used accurately and cause poisoning when the dose is too large. When adding the drug to the feed, it must be mixed evenly. Mix the powder with a small amount of powder first, and then gradually expand to the required content according to the specified proportion. Drugs that are insoluble in water cannot be administered from drinking water to prevent the drug from settling at the bottom of the drinking fountain, causing excessive intake of some chickens. Do not put the feed and pesticides together to cause pesticide poisoning; absolutely must not use moldy feed to feed chicks; do a good job of indoor ventilation, beware of gas poisoning. Any of these negligences can cause irreversible losses. 8, to prevent the accumulation of extrusion die. Crushing and squeezing and dying, sometimes occurs during the chick stage, mainly due to: excessive density, and a sudden drop in room temperature; tilting and stacking during handling, evacuation when weighing or vaccination without timely evacuation; The time is too long, especially when the water is cut off and then fed; the sudden power outage or intrusion into the rodent and other factors causes fright, turmoil and accumulation. Therefore, it is necessary to determine the amount of chicken breeding in accordance with the size of the house, but also have enough food troughs and drinking fountains. In the chick stage, 23 hours of light and 1 hour of darkness training are required to adapt to the dark environment. 9, strengthen management, prevent the occurrence of various evils. Severe paralysis occurs after 3 weeks of age. Common anal fistulas, metatarsal toes, and feces are common. The main measure of prevention is to break the car at the age of 5-9 days. Usually should strengthen management, feeding density can not be too large; compound feed in a variety of nutrient content should be reasonable, can not lack inorganic salts and essential amino acids; light intensity can not be too strong, time can not be too long. 10, prevent animal damage. The biggest pest of a chicken is a rat. Therefore, you should unearth a rodent before brooding. You should close the doors and windows in and out of the brooding room. The doors and windows are best to be blocked with nylon rope; all the holes in the room are closed. In summary, the reasons for the death of the chicks are many, but as long as the responsibility of the keeper is strengthened, various operating procedures are strictly enforced, various environmental conditions for brooding are well-developed, nutrition is provided for a comprehensive and balanced diet, strict prevention of disease and disease prevention and control The measures may reduce the number of chick deaths, improve the survival rate of broodstock, and achieve better economic benefits. (Postal Code: 735000)