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Based on TechEasy Layer Equipment, we mainly talk about the management factors that affect egg production rate.

The suitable temperature for laying hens is 15-22℃. If it exceeds 27℃ or is lower than 13℃, the egg production will be affected. If the laying hens are kept at a temperature above 22℃ for a long time, the egg weight may be reduced and the eggshell may become thinner;

When the temperature is higher than 29℃ and lower than 5℃, the egg production rate will be significantly affected; when the house temperature is lower than -2℃, it is difficult for the chickens to maintain normal body temperature and a higher egg production peak, and the nutrients required for maintenance increase, and the nutrients required for production decrease, resulting in a decrease in egg production rate and feed utilization.

The model relationship between laying hen production and temperature is: egg production rate = 1.02065-0.006 893×highest temperature + 0.002 574 87×lowest temperature; average egg weight = 62.564 4-0.102 046×highest temperature + 0.112 483×lowest temperature. The suitable range of relative humidity is 55%~60%. High humidity has the greatest impact on laying hens. The chicken house should be built in a dry, sunny place, and heat-insulating and moisture-proof materials should be used. Ventilation should be strengthened at ordinary times, and feces should be cleaned in time.

After the young hens aged 17 to 18 weeks are transferred to the laying hen house, artificial lighting should be gradually increased under natural light, reaching 16 to 17 hours at the peak of egg production at 26 to 28 weeks, and this lighting time should be maintained until the egg production ends at 72 weeks of age. The appropriate light intensity is 6 to 10 lux.

The harmful gases in the chicken house are mainly ammonia, hydrogen sulfide, methane, carbon dioxide, etc. The carbon dioxide concentration in the range of 531.44 to 765.53 mg/kg has no significant effect on egg production rate and egg weight. The way to prevent excessive concentration of harmful gases is to strengthen ventilation and clean up chicken manure in time.

Egg production rate

The average culling age of laying hens is 80 weeks. The egg production peak can generally be maintained for 20 weeks, and the egg production rate is above 80% (90%-96% can be achieved with advanced breeding equipment). After 40-60 weeks of age, the egg production rate is maintained at 70%-80%. When the egg production rate is lower than 70%, farmers begin to gradually eliminate old chickens.