It is very important to control body weight early in laying hens' growth. At least once every two weeks from the age of 4 weeks, one body weight will be weighed. By 12 weeks, 95% of broiler chicken bones have grown well. If the body weight is lower than the standard before 12 weeks of age, It shows that the bone growth is lower than normal. The feeding management system should be changed in time to change bone growth. Weigh the chicks from the age of 4 weeks and randomly select 5%-10% of the birds (each weighing is best fixed at the same time on an empty stomach). If the average weight at the age of 6 weeks reaches the standard, feed the bred diet. If the standard is not reached, continue feeding the brood ration until it reaches the body weight standard. After 10 weeks of age, the follicles on the hen's ovary begin to accumulate nutrients and gradually grow. After that, the sex organs develop more rapidly. Therefore, the sexual maturity is controlled while controlling body weight.
To evaluate the breeding of a group of chickens, in addition to the survival rate indicators, but also to see the uniformity of the weight of the situation, generally more than 80% of a group of chickens, the individual average body weight fluctuations in the range of 10%, the group is considered normal growth and development; If it is lower than 80%, it indicates that the flock uniformity is poor, and there is still room for improvement in management. We should carefully look for the causes and solve them. In order to improve the uniformity of bred chickens, while strengthening and improving the husbandry and management, the cockerel is identified at any time in the breeding process of the broiler hens, and diseased, disabled, crickets, crickets, and particularly thin chickens are eliminated in time.
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