Some chicken-raising specialists do not pay much attention to the age of first-born hens. They think that premature eggs will have early benefits. Actually, this is unscientific. Properly postponing the age at the beginning of the breeding period and improving the performance of laying eggs have a good effect on the high and stable production of chickens. The specific method of controlling the age of first birth is to start the day off from the second day when the chicken production rate reaches 5%, and fasting for 8 to 10 days. According to the climate, humidity, and seasonal differences, the chicken population should be given a standard amount of food, starting from the day of refeeding, after reducing the weight by 20% to 25%. Before fasting, measure body weight according to 1% to 2% of the number of chickens, and check the extent of weight loss in time. Can not cut off water during fasting and illuminate as planned. The implementation of fasting to control the age at first birth, the rate of egg production reaching 50% is postponed, the delay is approximately the same as the time of fasting, eggs can be seen approximately 10 days after fasting, and after another 5 to 7 days, 50% of eggs can be laid. rate. Using this method to control the age of first birth, the birds enter the peak of egg production at an early stage, the peak period is prolonged, and the yield is stable and high in production. It is also possible to avoid the occurrence of rectal prolapse due to excessive accumulation of fat in the cloaca.
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