Egg calcium to science

The non-feeding of bone meal is different because the production process of processing bone meal is different, and the quality of its products varies greatly, so there is a distinction between steamed bone powder and raw meal. Steamed batter is a product that has been processed, removed of most of the protein and fat, and pressed, dried and crushed. The raw bone powder is a simple flush of the bone and then cooked in a cauldron for several hours without pressure or degumming, and then removed, dried, and crushed. This bone powder has an odor, black or dark gray, 23% calcium, 10.5% phosphorus, 21% crude protein, 5% crude fat. If this kind of bone meal is used for long-term feeding, it will cause the imbalance of calcium and phosphorus in the chicken, which will result in a decline in laying ability of laying hens, which will cause significant economic losses to chicken production.

Do not feed sheep bone powder in places where there are more sheep, people often process sheep bone into sheep bone powder and add it to livestock and poultry feed instead of other bone meal. This is okay for most livestock and poultry but not for laying hens. Because the egg shell is formed in the chicken body, the temperature should not be too high. The sheep's bone powder is hot, and when it is absorbed and used by laying hens to participate in egg shell formation, the temperature in the chicken body will increase, which will not only affect the formation of egg shells, but also reduce the chicken's egg production rate.

Selection of Coarse Grain Calcium Sources During the chicken egg production, calcium source feed added to the diet should be supplied in the form of shells or coarse grain limestone. Because this kind of granular calcium is slower to leave the stomach, it is beneficial to increase the strength of the eggshell.

After selecting the appropriate calcium source for the feeding method, it is also necessary to pay attention to calcium supplementation: it is not better to provide calcium supplement to the hens. Generally, about 4.8 grams of calcium is required for each hen to produce one egg. If the calcium content in the diet exceeds 4%, on the one hand, urate will accumulate in the body, causing indigestion and diarrhea, and even symptoms of gout; on the other hand, It will make feed palatability worse, leading to a reduction in feed intake and egg production. Therefore, the calcium content in laying hens is generally 3% to 3.5%. Calcium source feeds can be placed individually, either for chickens or mixed in the feed. Under stress, vitamin C can also be added to promote the secretion of calcium from the bone marrow and activate vitamin D3, which not only contributes to the improvement of egg shell quality but also increases the egg content. The amount of vitamin C in the diet should be 50 mg per kg of feed.

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