First, the laying hen. Light has an important role in feeding, drinking, sports and health of the chicks. To ensure the growth and development of the chicks, reasonable lighting should start from the chicks. Freshly shelled chicks, weak physical strength, in order to ensure eating and drinking water, generally the first week of light 23 to 24 hours, the second week is reduced to 19 hours, the third week to the eighth week is reduced to 8 hours, brooding and breeding period of light Time can only be reduced and can not be increased, so as to prevent the young hen from sexual maturity prematurely, laying eggs in advance, the egg weight is small, the egg production is poor, and the egg production is low throughout the year. In the first week of light intensity, a 40-watt bulb is suspended every 15 square meters. After the second week, it can be replaced with a 25-watt bulb. The suspension height can be about 2 meters. The light time should be extended at 18 to 20 weeks of age, and the light time should be kept at about 16 hours, and the light intensity should be increased to 4 to 5 watts/square meter to promote the increase of egg production. In the last month of the laying hens, the lighting time can be extended to about 17 hours in order to fully exploit the laying potential of the laying hens.
Second, meat and poultry. 23 hours of light, 1 hour of darkness, light intensity is based on the normal diet of meat and poultry, broiler 2 to 3 watts / square meter in the first two weeks of brooding, and later 0.75 watts / square meter.