Available Phosphorus in Poultry

Available Phosphorus (aP) is the portion of dietary total P that meets the animal's P requirements.
This definition isn't tied to a specific P fraction (phytate or nonphytate P). Interestingly, some phytate P (pP) is available to animals, while some nonphytate P (npP) is not, and the availability of both can vary greatly between different feeds

It's a good time to remember this... Available P is not Nonphytate

What do you think about available phosphorus?

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Source:
Y. Shastak
M. Rodehutscord