What is medullary bone in chicken?
The medullary bone is not a specific bone in the skeleton of a chicken, it is a type of bone. Medullary bone is unique to female avians. It is an unstable secondary bone in the marrow cavities of bones that can be used during the reproductive period. If a calcium deficient diet is fed to laying hens, the hens will deplete their own skeleton of calcium by using the reserves in the medullary bone structure.When this happens a paralysis can happen called Cage Layer Fatigue.