(1) Temperature and humidity should be adopted for batch incubation, and each batch of eggs should be placed at cross intervals. When hatching eggs, pay attention to put the big head up on the egg tray. On the first1-18th day of incubation, the temperature in the incubator (egg noodles) should be 37.8 degrees Celsius in winter and 37.5 degrees Celsius in summer. After hatching, people should be transferred from the incubator for sowing in 19 days. The relative humidity is 60% from 1 to 18, and 70% from 19 to 2 1.
Turn the eggs every two hours at an angle of 90 degrees.
(3) Incubation-generally from the 20th day, basically from 2 1 day.
(4) Disinfect half an hour after delivery and once before hatching. After hatching, it should be cleaned and disinfected. Formalin fumigation or chlorpyrifos spray disinfection is commonly used. Disease prevention should run through the whole feeding process. Marek's vaccine should be injected into hatched chickens. Chickens with poor disease management at the age of 1-5, 12- 14 and 35-37 are injected once every 3-5 days to prevent bacterial diseases such as salmonella and Escherichia coli. Enrofloxacin is the first choice. In addition, tylosin, doxycycline and other drugs are used to prevent respiratory diseases such as mildew pulp, and drinking water is often disinfected with disinfectants such as baidusha. Pay attention to prevent coccidiosis before and after 3 weeks of age. At the age of 7- 10, Newcastle disease vaccine was inoculated by nasal drip or drinking water, and vaccinia vaccine was also inoculated. 12- 14 days old, the infectious bursal disease vaccine is free of drinking water for the first time, and it is best to strengthen immunization once after two weeks. Breeding chickens should do a good job in vaccination and prevention of inactivated oil emulsion vaccines such as Newcastle disease, infectious bursal disease, infectious bronchitis and egg drop syndrome, which can be formulated according to local chicken immunization procedures.