The main points of the technique of raising chickens carefully and starting production in autumn

Autumn is the first birth stage in spring, and the flock management in this period is related to the economic benefits of chicken farms (households). Therefore, the following management measures should be taken for laying hens:

1. Change the ferry material in time. Generally, 20-week-old chickens are fed with 1% calcium and 16.5% crude protein before egg feeding. When refueling, the application of half a month to gradually complete the refueling process, do not be too hasty, in order to prevent diarrhea. When the laying rate reaches 2%-3.5%, the feed should contain 3.4%-3.5% calcium and 18% crude protein.

2. Control the weight of the first birth. While replenishing calcium, the uniformity of population development should be grasped, and the large, medium and small reserve hens should be raised in groups and adjusted regularly. Do not sharply increase or reduce the material, its benefits can only be shown after 3 weeks, should not be acted in haste. The feeding amount of light-weight chickens should not exceed that of medium-sized chickens, so as not to affect sexual maturity due to fat deposition.

3. Control the temperature of the enclosure. The optimum laying temperature for laying hens is 18 ℃ ~ 23 ℃. When the external temperature is lower than 18 ℃, the nutrition needed for maintenance will increase; when the temperature is lower than 13 ℃, it will affect the growth, development and egg production of laying hens, so when the temperature of the henhouse is too low and the feed is not increased in time, the production of hens will be delayed due to lack of energy.

4. Adjust humidity and ventilation. The relative humidity of the chicken house is 55%, 65%, and the relative humidity of the chicken house at the age of 1-3 days is 70%. The relative humidity can be reduced to about 50% after 4 weeks of age. The humidity should not be too high, otherwise the chicks will have filthy feathers, loss of appetite, weak and sickly, and so on, thus delaying the start of production. If the ventilation is poor, the harmful gases in the air will increase, the humidity will increase, and the oxygen content will decrease, which will make the reserve hens underdevelop and delay the birth.

5. Lighting control and adjustment. Backup hens generally enter the stage of sexual maturity at the age of 15 weeks, and light should be replenished at this time to meet the needs of sexual maturity. But the light should not be too strong to prevent chickens from pecking feathers, toes, backs and other bad habits. The light time of laying hens is 13-17 hours a day.