Pay attention to adding an appropriate amount of vitamin D3 to the egg laying feed in summer

Vitamin D3 can promote the absorption of calcium and phosphorus in the intestinal tract and increase the level of calcium and phosphorus in the blood, generally adding 0.1% to 0.15%. Other studies have shown that phytase instead of inorganic phosphorus in feed can significantly improve eggshell quality and reduce egg breaking rate, which may be due to the addition of phytase to reduce the contents of fluorine, arsenic and cadmium contained in feed inorganic phosphorus in rations. When the content of these elements exceeds the standard, it will harm the quality of eggshell.