Control the phosphorus content in layer feed for laying hens in summer

Pay attention to the content of available phosphorus in the feed and the appropriate calcium-to-phosphorus ratio. Although eggshells contain relatively little phosphorus (about 20 mg), it determines the elasticity and toughness of the eggshell. Only about 30% of the phosphorus contained in feed can be absorbed and utilized. It is usually required that the available phosphorus content in the ration should reach about 0.4%. In addition to the available phosphorus content, an appropriate calcium-to-phosphorus ratio should also be taken into account when formulating the diet. An imbalanced calcium-to-phosphorus ratio affects the absorption and utilization of calcium and phosphorus. Generally, in layer feed, total phosphorus is 0.6%, available phosphorus is 0.5%, available phosphorus accounts for 80% to 90% of total phosphorus, and the calcium-to-phosphorus ratio is between 4 to 1 and 6 to 1.