1. Breeding chickens should be fed from 4 weeks of age. 2. The basic basis for feeding restriction is body weight. For the parent breeders of broiler breeders, from the age of 4 weeks, a random sample of the body weight should be taken each week, and each group should be tested for 5% or no less than 25 individuals. Weigh in the afternoon at the daily limit, and weigh at the stop day on the next day. 3, limit the need to pay attention to the health of the flock. When the flock is sick or vaccinated, free access should be temporarily resumed. 4, before the restriction of feeding should be too light or weaker chickens to pick out or eliminated. 5, the amount of feeding depends on the chicken population weight and standard weight comparison. When the chicken population weight is lower than the standard body weight, the feeding amount can be appropriately increased; when the chicken population exceeds the standard weight, the increase of the material amount can be suspended until the standard body weight is consistent. In addition, the difference between season and feed nutrient levels must also be taken into consideration when restricting feeding. In the winter when the house temperature is low, feed more, and when the house temperature is high in the summer, feed less, and when the nutrient level of the feed is low, you should feed more. 6, in order to avoid the occurrence of delirium during feeding restriction, when the chicken 7-10 days old or 6 weeks old when the deafness. 7, to ensure that each chicken has enough feed and water. The number of troughs and sinks should be sufficient and should be placed evenly. 8, suitable for feeding density. At the end of the breeding period, 6 chickens per square meter are required, and each group has no less than 500 chickens. Different Types Of Plastic Forceps,Different Types Of Forceps,Disposable Plastic Forceps ,Colourful Plastic Surgical Tweezers K-MED Co., Ltd. , https://www.kmedasia.com