With the increasing popularity of chicken production technology, the application of mineral elements in the production of chickens has become more and more widespread. Among them, the supplement of calcium and phosphorus, which is the most vulnerable to laying hens, has become a common concern. This article talks about how to make calcium in the production of chicken.
First, the feed of chicks and broiler chickens contains calcium and too much harm.
1. The suitable calcium content in chick and broiler feed is 0.6%-0.9%, and the maximum is not more than 1.0%, which can meet the needs of growth and development. Because chicks and broilers require less calcium, calcium is mainly used for bone growth in chickens.
2, if the chicken and broiler chicken feed calcium deficiency, it will lead to slow growth of the flock, bone dysplasia, light bone brittle and easy to bend, deformation and bending, the formation of rickets; severe cases can develop rickets, its clinical symptoms Similar to vitamin D deficiency. If the calcium content in the feed is too much, it will easily cause the deposition of calcium salt in the kidney, endangering the normal development of the kidney, affecting the normal function of the kidney, hindering the discharge of uric acid, and causing gout disease in chickens.
Second, the appropriate calcium supplementation time before the laying of the laying hen and the harm of calcium too early and too late
1. Appropriate calcium supplementation time before laying hens is generally 2 weeks before the start of production. The laying hens are about 18 weeks old. The broiler breeders usually start at 22 weeks of age. At this time, they can directly switch to laying hen feed. Or on the basis of the feed of chickens and young chickens, mix the shell powder or calcium carbonate granules 10-15 grams per day into the feed for the chickens to eat freely.
2, calcium before the start of production can not be too early. Before the start of laying, the laying hens need less calcium. Premature calcium supplementation is not conducive to the deposition of calcium in the bones of chickens. Second, it affects the absorption and utilization of calcium by chickens during egg laying. Because the feed contains too much calcium, it reduces the ability of chicken bone to deposit calcium.
3, calcium supplementation too late directly affects the body condition and egg production of laying hens. The demand for calcium in laying hens is 3-4 times higher than that in brooding and breeding. If the laying hens are re-calculated after the production, the hens will mobilize the calcium in the bones to meet the calcium requirements of laying eggs. Participate in the synthesis of eggshells. Over time, the calcium deficiency of laying hens will lead to the occurrence of diseases such as cartilage, rickets and sputum, which will directly affect the egg production.
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