Loose chickens to calcium supplement
Although free-range chickens are able to feed freely, calcium still needs to be supplied in sufficient quantities from the diet. Otherwise, the chickens will have osteoporosis, abnormal posture, and produce soft-shelled eggs, thin-shelled eggs, or shellless eggs. Increased egg production will also decrease.
Chai chickens can not feed high-calcium diets during the rearing stage, and the dietary calcium content should be controlled between 0.8% and 0.9%. As long as the development is normal, most of the free-range chickens begin to lay eggs at 145 days to 155 days of age. Therefore, calcium supplements should be started from this period. The use of calcium by chickens is approximately 55%, and the production of one egg requires 2.0 grams to 2.3 grams of calcium. Therefore, for each egg produced, the chicken needs to eat approximately 4 grams of calcium. According to this requirement, the calcium in the diet can be increased to 2% from the stage of opening to 5% egg production, and then gradually increased to the optimal level of 3.2% to 3.5%. If the ambient temperature is high, the feed intake of the chicken is reduced, and the amount of calcium can be appropriately increased.
Stone powder, shell powder and bone meal can be used as the main source of calcium during calcium supplementation. When buying, care should be taken that the particles in these raw materials should be large, and the less the better the powder, the better. Because of the long residence time of granular calcium in the digestive tract, calcium can be uniformly supplied during the eggshell formation stage. In addition, granular calcium can play a role in the stomach to improve feed digestibility.
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