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March 15, 2026Poultry Science0 citationsOpen Access

Impact of Phosphorus-Free Diets on Immune System of Laying Hens

Impact of feeding diets without mineral P supplement on the immune system of two laying hen strains

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Authors

NWNadine WallauchSSSonja SchmuckerTHTanja Hofmann

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Overview

Study shows dietary phosphorus reduction alters immune response in two hen strains, suggesting nutritional strategies may benefit poultry health.

Key Points

  • This research aims to examine the effects of diets without mineral phosphorus on the immune system of two laying hen strains.
  • Investigated two strains of hens: Lohmann Brown-Classic and Lohmann LSL-Classic.
  • Compared diets with and without mineral phosphorus supplementation during specific growth periods.
  • Analyzed leukocyte types, lymphocyte functionality, and cytokine gene expression.
  • Diet without phosphorus increased natural killer cells and CD4 + CD25 high T cells in the cecal tonsils.
  • Higher IL-2 and IL-10 expression levels observed with phosphorus-free diet compared to supplemented diet.
  • Renunciation of phosphorus altered immune regulation, fostering an anti-inflammatory condition.

Cite This Study

Wallauch et al. (2026) studied this question.

synapsesocial.com/papers/69b606ea83145bc643d1d65ehttps://doi.org/10.1016/j.psj.2026.106771
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