Soft bones and thin fragile bones are issues that affect producers of high-performing egg layers all around the world. Osteomalacia and osteoporosis most commonly arise from deficiency, imbalance, or malabsorption of calcium, phosphorus, or vitamin D3. The effect of skeletal issues on a flock typically is demonstrated by decreased production, crooked keels, fractures, and poor shell quality. All hens require a specific amount of nutrients to maintain production and skeletal structure. The skeletons and dietary requirements of hens are unique relatives to the level of calcium consumed and the amount of bone that is constantly being built and resorbed. When soft bones or poor shell quality is found, usually at least one of the following factors is involved: pullet growing, nutrition, feed consumption, or disease.