The stage from the temperature of the chicks to the laying of the eggs is usually called the spare chicken stage. In order to enable the laying hens to start production on time and in order to quickly reach the peak of egg production after the laying of eggs, and to continue the high-yield purposes, the reserve hens must be properly reared. (1) Feeding in limited quantity Feeding about 80% of the free food of the chickens, and drawing 10% of the chickens to weigh each week. If more than the standard body weight is found, the amount of feed should be appropriately reduced, but otherwise it should be increased appropriately. Limited feeding can also be done by feeding once a day or feeding 6 days a week. (B) Limited quality feeding mainly reduces the content of crude protein and metabolic energy in feed. At the same time, it is necessary to appropriately increase the amount of low-energy, large-volume feeds such as bran-type feeds. However, calcium, vitamins, and trace elements in feed must be ensured. (3) Feeding the general breeder chickens in limited time may take the day-to-day feeding method for 1 day and 1 day for feeding. Feed the material for 1 day, concentrate the feed for two days on one day, and calculate the amount of feed accurately; on the 1st day of stop feeding, leave no material in the trough, and do not put any food, but the drinking water should be fully supplied. Egg-feeding chickens are generally limited to light-reducing time-limited feeding. That is, the darkness of the house is artificially created throughout the day, and the lamp is turned on only during the prescribed feeding time. Since chickens are mostly kept in darkness for a long time, it is beneficial to prevent the occurrence of warts. Gradually increasing the light before the start of production can promote the orderly production of chickens. (4) Precautions Feed restriction is generally stopped before the age of 20 weeks. Attention should be paid to the following points during the feed restriction process: (1) Feed restriction should be controlled flexibly according to the weight of the chicken, only when the reserve chicken exceeds the standard weight. The implementation of restrictions on rearing, so it is necessary to frequently measure chicken population weight. (2) There should be sufficient feeder troughs for feed restriction so that each chicken can feed at the same time. (3) Before the start of the restriction of feeding, the chickens should be severed. (4) Before the feed restriction and the feed restriction process, the chickens with poor development, sickness, and small individuals should be picked out in time and fed separately. (5) End of feed restriction, the increase of feed quality and the increase of quantity cannot be achieved in one step.
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