Phosphorus source and egg production in aging hens: an abstract-only study
In this abstract, hens fed dicalcium phosphate (DCP) or tricalcium phosphate (TCP) were compared on mineral transporter gene expression in gut and kidney. DCP-fed hens showed declining egg production in weeks 5–8; the authors conclude TCP supports production, but only the abstract was reviewed. [1]
Automatic summary · not editorially reviewed
The key findings
The authors analyzed eleven mineral transporter genes in duodenum, jejunum, ileum and kidney of hens fed DCP or TCP. [1]
During weeks 5–8, DCP-fed hens showed significant declines in egg production (β = -3.11 per week). [1]
The authors conclude that TCP sustains production by programming a systemically efficient homeostatic strategy. [1]
The source at a glance
- Study type / format
- Animal study comparing two dietary phosphorus sources; design details not reported in the abstract.
- Population / context
- Aging laying hens fed diets with dicalcium phosphate (DCP) or tricalcium phosphate (TCP); number of hens not stated in the abstract.
- Summary based on
- Study abstract
- Original publication
- October 12, 2026
Mineral transporter genes in gut and kidney of hens
The study asked whether the dietary phosphorus source regulates performance in aging hens. The authors report analyzing the coordinated expression of eleven key mineral transporter genes in the duodenum, jejunum, ileum and kidney of hens fed either dicalcium phosphate (DCP) or tricalcium phosphate (TCP). This is a comparison of two phosphorus sources in the diet, measured at the level of gene expression in gut segments and kidney. The abstract does not state how many hens were studied or how long the experiment ran beyond the reported weeks.
Supporting source [1]
Egg production fell in DCP-fed hens during weeks 5–8
During weeks 5–8, hens fed DCP showed significant declines in egg production, reported with a coefficient of β = -3.11 per week. The abstract does not report the corresponding figure for TCP-fed hens or a direct statistical comparison between the two groups in the supplied text. The authors conclude that TCP sustains production by programming a systemically efficient homeostatic strategy, which they describe as explaining the established performance benefit at a molecular level. This is the authors' interpretation of gene expression patterns, not a demonstration that changing phosphorus source causes better production in all flocks.
Supporting source [1]
Proposed principle for layer nutrition, not a feeding recommendation
The authors propose a new principle for layer nutrition: choosing a phosphorus source should consider its role as a physiological signal that modulates homeostasis. They describe this strategy as mitigating age-related decline and enhancing resource allocation to production. These are conclusions drawn from transporter gene expression in gut and kidney; the abstract does not report egg quality, bone measures, health outcomes or economic results. Because only the abstract was reviewed, details of design, sample size, duration and statistics cannot be checked. The findings concern hens in production systems, not human nutrition.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Sample size, study duration, housing conditions, statistics and outcomes beyond egg production are not reported in the supplied text. The conclusions rest on transporter gene expression and are the authors' interpretation.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Barreto Sánchez AL, Tilahun M, Zhao G, Zhang H. · europepmc.org · October 12, 2026