SHOW / EPISODE

Dr. Michael Persia: Rethinking Phosphorus Needs in Pullets | Ep. 176

Season 2 | Episode 176
13m | Oct 29, 2026

In this episode of The Poultry Nutrition Blackbelt Podcast, Dr. Michael Persia from Iowa State University explains how phosphorus requirements change throughout pullet development. He discusses research challenging current feeding recommendations, the relationship between growth and mineral needs, and opportunities to reduce phosphorus excretion. Discover how these findings could improve poultry nutrition, feed efficiency, and environmental sustainability. Listen now on all major platforms!


"Slower growth shifts pullet phosphorus needs from growth toward maintenance during later development."


Meet the guest: Dr. Michael Persia is Director of the Egg Industry Center and Iowa Egg Council Endowed Professor at Iowa State University. A poultry nutrition researcher with experience in academia and industry, his work connects applied layer nutrition with practical challenges across egg production. Learn more from Dr. Michael Persia on The Poultry Nutrition Blackbelt Podcast, available on all major platforms.


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What you'll learn:

  • (00:00) Highlight
  • (01:43) Introduction
  • (04:40) Phosphorus requirements
  • (05:55) Age-related needs
  • (07:52) Phosphorus deficiency recovery
  • (10:26) Environmental benefits
  • (12:05) Growth versus maintenance
  • (14:00) Closing thoughts


The Poultry Nutrition Blackbelt Podcast is trusted and supported by innovative companies like:


* Fortiva

* Kemin


- Poultry Science Association

- DietForge

- Anitox


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