Answer: In order to maintain the longevity of high-yielding hens and maximize the yield of qualified eggs, it is necessary to reduce the material after peak production. If the hen's feed intake exceeds the required amount, it can continue to gain weight through fat deposition. Fat deposition rate is a key factor affecting the rate of egg production and fertilization after peak period, so the amount of feed should be adjusted according to changes in body weight and egg production rate. The precise timing of the hen's cuts should depend on the growth history of the flock and the condition of the flock. The first batch of chickens with high egg production rate should not be earlier than 34 weeks old, and the reduction should be carried out step by step. After the peak of egg production, there is a plan to reduce the amount of feed, so that the weekly weight gain of the flock is stabilized at 15 to 20 grams. The amount of feed should be determined weekly based on data such as body weight, egg weight, feed time, number of eggs per day, and status of flocks, and be adjusted in time according to changes in ambient temperature in the house. The total material loss is 8% to 12% of the peak material quantity. The principle of material reduction: firstly fast and slow, 0.5-1.0 grams per bird per week.
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