Calcium is essential to the body and plays a vital role in maintaining growth and performance. Deficiencies can occur in both chicks and laying hens during breeding, which can adversely affect their performance.
The typical symptom of young birds is rickets. Onset is rapid, with symptoms appearing between 1 and 4 weeks of age. The main causes are poor growth and feather growth, weak legs, unstable standing and limping gait. Osteomalacia, easy fracture, sternum deformity. Adult birds are prone to osteomalacia. Osteoporosis, poor bone hardness and bone deformation. Legs too soft to lie on the ground; Claw, beak keel curved, reduced egg production, the initial symptoms are an increase in shelled and shelled eggs. The surface of the shell is distorted and sharp.
Attention should be paid to the prevention of dietary calcium and phosphorus content should meet the needs of poultry and ensure their content, especially to ensure the normal absorption and metabolism of calcium and phosphorus in the diet of laying hens and chicks. Vitamin D management should also be paid attention to. Once vitamin D deficiency occurs, dietary calcium and phosphorus should be increased immediately to adjust the ratio. Of course, it’s nice to be able to test the feed. For calcium supplement, feed grade calcium formate can be used.
So when chickens are calcium deficient, they eat their eggshells for calcium