Don't ignore the problems of raising chickens in winter.

Problems of ventilation and insulation

In winter, many chicken farmers tend to re-heat, light ventilation, eventually leading to hypoxia and increased death of chickens, harmful gas concentration increased to reduce the constitution of chickens, causing other diseases, especially respiratory diseases. Reasonable ventilation and heat preservation measures are to keep warm at the beginning of brooding, and then adjust ventilation according to indoor temperature and external weather, so as to keep warm on the basis of ensuring ventilation.

Problems with restricted feeding

When restricting feeding, the plan should be made according to the hatching date and development standard, generally from 6~8 weeks to 18~20 weeks of age. The crude protein content in the diet should be about 16% at the beginning, and 85%~90% of the ad libitum feed should be provided. After 14 weeks of age, the crude protein ratio can be reduced by 1% every week until 13%~14%. Limit feeding also pay attention to the condition of chickens, pick out sick, weak and residual chickens, ensure sufficient food troughs and sinks, and at the same time, sample and weigh weekly, and decide whether to increase or decrease feed at any time according to weight.

Forced molting problem

Usually, laying hens are only raised for one laying cycle, that is, about 10~12 months. However, with the change of egg market, it is a good method to use forced molting to prolong the laying period. Generally, after forced molting, the laying period can be extended for 6~9 months. During forced molting, artificial auxiliary lighting was stopped. The days of water supply and feed suspension should be 25%~30% of chicken weight loss, generally 10~12 days, that is, from 13 days onwards, 30 g/day/chicken can be fed. Then add 20 grams per day to 90 grams per day for 19 days. From day 20 onwards, layers were fed ad libitum, and from day 27 onwards, light was prolonged for 0.5 hours per day until 10 hours per day.