① The energy and protein in feed are too low. Long-term use of this feed will cause insufficient supply of energy and protein, resulting in smaller egg weight. ② Insufficient feed intake. ③ Laying hens are underweight. (4) The light increased too early and too fast, which led to premature delivery of chickens.
2. Causes of deformed eggs:
Frequent egg laying without yolk is mainly caused by tubal inflammation. After salpingitis is cured, deformed eggs will not be produced again.
For the problem of raising chickens, you can consult the breeding software-Soumutong.