Autumn is the first stage of spring chicken production. This period of chicken management is related to the economic efficiency of chicken farms (households). Therefore, the following management measures should be taken for opening hens:
1, timely change and feed the transition material
Generally, 20 weeks old chickens are fed pre-egg feed with calcium content of 1% and crude protein of 16.5%. When the material is reloaded, the reloading process should be gradually completed within half a month. Avoid overrunning to prevent dialysis. When the egg production rate reaches 2% to 5%, the calcium content of the feed should be 3.4% to 3.5%, and the crude protein content should be 18%.
2, control the initial weight
While recharging calcium, we should do a good job in the uniformity of population development. We must group large, medium, and small hens in groups and transfer them periodically. Avoid sudden increase in material or slashing material, the effectiveness of which can be expressed after 3 weeks, should not be rushed. The weight of light-weight chickens should not exceed the size of medium-large chickens, so as to avoid affecting sexual maturity due to fat deposition.
3, control the housing temperature
The optimum laying temperature for laying hens is 18°C ​​to 23°C. When the outside temperature is lower than 18°C, the nutrients used to maintain the demand will increase; when the temperature is lower than 13°C, it will affect the growth and egg production of laying hens, and the temperature of the chicken house is too low to increase in time. When feeding, chickens will postpone production due to lack of energy.
4, adjust the humidity and ventilation
The relative humidity of the chicken house is required to be 55% to 65%, and the relative humidity of the house at 1 to 3 days is 70%. After 4 weeks of age, the relative humidity can be reduced to about 50%. Humidity should not be too high, otherwise the chicks will experience filthy feathers, loss of appetite, sickness and sickness, delaying production. If the ventilation is poor, harmful gases in the air will increase, the humidity will increase, and the oxygen content will decrease, which will cause the reserve hens to stunt and delay production.
5, lighting control and adjustment
Reserve hens generally enter the sexual maturity stage at 15 weeks of age, at which time supplemental light should be started to meet the need for sexual maturity. However, the light should not be too strong to prevent the occurrence of embarrassment such as chicken feathers, toes, and backs. The initial illumination time of laying hens is 13-17 hours.
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