In winter, the adult laying hens can stop moulting for up to 4 months. During the moulting period, the number of eggs laid by the chicken is greatly reduced, and the moulting time is sooner or later. After the moulting, there is also the first time after the moult. The peak period of egg production is late, causing inconvenience to the husbandry and management. Therefore, it must be artificial. Forced moulting, prompting the laying hens to moult simultaneously while opening production.
Artificial forced moulting can use the following methods. Add 2.5% zinc oxide or 4% zinc sulfate to the layer diet. After zinc oxide or zinc sulfate was added, the appetite, feed intake, body weight, and egg production rate of laying hens all decreased. After 2 to 3 days, the feed intake decreased to about 20 grams, and by the fourth day, the egg production rate decreased by 75%. 80%, to the seventh day, the egg production rate is almost zero. High-zinc diets continue to feed for 7 to 8 days, and the weight of the chickens will decrease by about 25%.
If the weight loss is less than 25%, you can continue to feed high-zinc diets. When the chicken group weight drops by 25%, after the chickens are discontinued, zinc oxide or zinc sulfate is to be removed, and the early feed of laying hens is changed. On the first day, each chicken feeds 30-40 grams, and then increases by 10 grams per day. 100 grams can be eaten freely.
Note that there is no need to stop the water during the feeding of high-zinc diets. Light can be reduced to 6-8 hours per day, and gradually increase the number of hours of illumination to 16 hours per day after returning to normal feeding.
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