VITAMIN D

Vitamin D is a fat soluble vitamin and is very important for animal nutrition

It is essential for  the proper utilization of calcium and phosphorus to produce normal, healthy bones. It is now realized that vitamin D is not only important for mineralization and skeletal growth but has many other roles in regulation of the parathyroid gland, in the immune system, in skin, in metabolism of foreign chemicals and in cellular development and differentiation. In its deficiency, retarded growth, misshapen bones (rickets), lameness and osteoporosis occur in layers thinner egg shell.