Increase mineral content. The minerals are mainly calcium and phosphorus. When the hen feeding in battery layer cages lays eggs, the demand for calcium increases. For example, the calcium deficiency in the feed will affect the quality of the eggshell, thus increasing the broken egg, which will cause the chicken to have soft shell eggs. The imbalance of calcium and phosphorus can not be removed. Phosphorus deficiency and calcium deficiency can also cause discomfort in laying hens, such as cockroaches, cockroaches, and quail eggs. Therefore, it is particularly important to increase the content of mineral additives in the diet accordingly.