First, 23 hours in the first week of the brooding period, 18 hours in the second week, and natural light after the third week.
Second, the breeding period is natural light. The chickens in the Shunji season were exposed to light for 20 weeks. The duration of the light was 14.5 hours, and it was increased to 21 hours in 21 weeks. The chickens in the retrograde season were exposed to light for 18 weeks. The light hours were 14 hours, 19 weeks and 15 hours, and 20 weeks were 16 hours.
Third, the laying period of 42 weeks before the 16 hours (lights as early as 4:00, turn off the lights at 20:00), 42 weeks after 16.5 hours (lights as early as 4:00, turn off the lights at 19:30).
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