Analysis of Neurological Symptom Diseases Caused by Calcium-Phosphorus Metabolism Disorders in Chickens
Strictly speaking, the neurological symptom disease caused by calcium-phosphorus metabolism disorders should be described as chondropathy (rickets/osteomalacia). It is characterized by deformation of the keel bone, weak expansion of the ribs, and legs that are brittle and easily broken. Affected chickens walk weakly and have difficulty breathing, and when held, they show no struggling response. It is commonly seen in chicks and also readily occurs in various caged chicken flocks. Besides an imbalanced calcium-to-phosphorus ratio, deficiencies of vitamin A and D3 are also among the causes of calcium-phosphorus metabolism disorders. The most common lesions found on pathological necropsy are vertebral hyperplasia of the ribs and severe deformity at the junction of the ribs and cartilage. Supplementing the feed with vitamins and calcium carbonate can quickly reverse these symptoms.