What is the effect of calcium on laying hens?

Why should laying hens be supplemented with calcium.

1.Calcium requirements.

The need for calcium in the rearing period is about 1%, which can basically meet the needs of chicken growth and development, because the rearing chicken needs less calcium, and the addition of calcium is mainly used for the bone growth of chickens. However, after entering the egg laying period, due to the need for egg production, the demand for calcium has increased significantly, and the calcium content is required to be around to meet the demand. Therefore, at this stage, the calcium content should be gradually transitioned to the needs of the laying period and constantly adjusted.

2.Timing of calcium supplementation.

The change of calcium in the feed will have a certain impact on the chickens, and will cause great stress to the various organs of the chickens, especially the intestines. Therefore, calcium supplementation needs a transition period, so that the quality of feed gradually changes, and the calcium content is from low to high, giving the chicken flock a suitable process. Generally, the content of stone powder is gradually increased from the expected date (18 weeks), that is, about 2 weeks before the start of production, and the time of calcium supplementation can also be adjusted in time according to the situation of the flock.

3.The appropriate amount of calcium supplementation during the initial period.

Young laying hens (22 40 weeks old) at the beginning of egg production, if the effective utilization rate of calcium is expected to be 60%, in order to meet the calcium requirement for eggshell formation, when the egg production rate of the flock is 70%, the average calcium requirement of each chicken per day is at least grams, and when the egg production rate of the flock reaches %, respectively, the average calcium requirement of each chicken per day is grams, grams, grams. Taking into account the specific conditions of actual production, such as the actual egg production rate of most chickens in the flock at 95% during the peak egg production period, it is necessary to give sufficient calcium at the level of egg production. That is, each chicken is given grams of calcium per day, which is the necessary amount of calcium for laying hens in the early stages of egg laying.

Calcium supplementation method for laying hens:

The good calcium supplement time for laying hens is 12:00 20:00, when the hens eat calcium freely, they can self-regulate the amount of calcium they eat, such as eating 92% of the calcium during the eggshell formation period, and only 68% of the calcium during the non-eggshell formation period.

Hens with light weight and less food should be fed more calcium.

Calcium is the main raw material for the synthesis of bones and eggshells, and it is important to pay attention to its content when preparing the diet of chickens. It is recommended to use 5% premix for laying hens produced by Liyang Yang Zhengchang Feed Technology, which has sufficient minerals and vitamins to ensure the nutritional needs of laying hens. You can search for more information.

Calcium is an important mineral element to ensure high and stable production of laying hens. Laying hens need a lot of calcium during the laying period, of which about 90% is used for bones and eggshells. Eggshell is mainly composed of inorganic and organic matter, the inorganic matter is mainly calcium carbonate (about 95%), the quality of eggshell largely depends on the calcium in the diet and the absorption and utilization of calcium by laying hens.

Adult hens need to take in calcium every day, and calcium is needed to lay an egg, and the absorption rate of calcium in the first half of egg laying is 55%-60%, and it is reduced to 40% in the later stage of egg production, so calcium needs to be eaten per 1 egg, but the calcium in the chicken body is only limited to about 15g, according to the needs of egg production, the hen body (including bone calcium) is only enough to lay 3-4 eggs, so a large amount of calcium is needed. If the egg-laying period of laying hens calcium intake is insufficient, the flock is susceptible to hypochondrosis, eggshell quality and egg production rate will decline, and a certain number of soft-shell eggs and thin-shell eggs, especially in the peak period of egg production, the reason is that the quality of eggshells depends to a large extent on the bone condition of chickens, laying hens due to the formation of eggshells and dynamic calcium metabolism. Hens with high egg laying rate, if the calcium is not enough, there will be thin eggshells after 4 days, and then the ribs may collapse, resulting in osteoporosis in caged laying hens.

An increase in the calcium content of the diet does not further increase egg production, but it can improve eggshell weight and eggshell thickness. However, when the calcium content in the diet exceeds 4%, it seriously affects the production performance of chickens, on the one hand, it will cause urate accumulation in the body, causing dyspepsia and diarrhea, and even gout symptoms; On the other hand, it will make the palatability of the feed worse, and the feed intake and egg production of the flock will be reduced.

To make the hen high.

to lay and reduce the breakage rate of eggs.

source, during the hen laying eggs, the calcium should be checked frequently, and calcium should be supplemented. Generally, from the age of 4 months or when the hen flock reaches 50% egg production rate, the hens should be fed compound feed containing calcium and phosphorus. In the case of high temperatures or high egg production rates (75% to 80%), the calcium content can be increased to; When the egg laying rate decreases, the calcium content should be appropriately reduced.

Shell powder, stone powder and high-temperature sterilized, skimmed eggshell powder are usually used as calcium sources, and it is generally advisable to feed the hens at 12 00 20 00 per day, so that the hens can eat freely.

The use of golden eggs for laying hens is an important measure to improve the amount and quality of egg production of laying hens.

Calcium supplementation method: laying hens should increase from about 18 weeks of age, shell powder to 2%; After 20 weeks of age, it enters the egg laying period, and the content of bone meal in the feed should reach and the shell powder should reach; After 38 weeks of age, the content of shell powder can be increased to the calcium content in the diet when the egg production rate of laying hens raised off the ground reaches 80%; When the laying rate is less than 80% or greater than 65%, the calcium content is; When the egg laying rate is less than 65%, the calcium content is: