Calcium:Phosphorus ratio

From UroWiki

The calcium:phosphorus ratio represents the amount of calcium as compared to the amount of phosphorus in your lizard's diet. While both are needed, you should aim to have a ratio of at least 2:1 (twice as much calcium as phosphorus), because because each gram of phosphorus requires at least one matching gram of calcium in order for phosphorus to be absorbed by the lizard's intestinal wall. If your lizard is not provided with enough corresponding calcium, it will begin to lose calcium content from its bones, ultimately resulting in metabolic bone disease.

How to check

You can check the ratios of calcium:phosphorus from the expandable nutritional information boxes on the food list page.

Adding calcium powder

As long as a good varied diet is provided for your uromastyx, they should get plenty of calcium without relying on supplements. You can also add supplements to their diet to provide sufficient calcium if there is not enough coming strictly from food. Products such as MinerALL provide additional calcium for uromastyx, but should not be used on a daily basis. It has been recommended by some long-time keepers/breeders that a small sprinkle once a week is sufficient for healthy adult uromastyx, and twice week for captive-bred hatchlings up to one year old. A sickly uromastyx may also benefit from other vitamin supplements.