SynthesisPoultry science2023
Minimum phosphorus requirements for laying hen feed formulations.
Synthesis in Poultry science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
14 citing papers in PubMed, 19 citations in OpenAlex.
- Dietary phosphorus source reprograms the kidney-intestine axis to dictate calcium-phosphorus efficiency and egg production in aging hens.Journal of animal science and biotechnology · 2026Article
- Chromatin accessibility of the jejunum in two high-yielding laying hen strains under divergent mineral phosphorus supply during the transition to egg laying.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Article
- Phosphorus alleviates age-associated osteoporosis in laying hens by reshaping bone metabolism and modulating cecal microbial communities.Poultry science · 2026Article
- Supranutritional phytase and dietary phosphorus effects on White Leghorns: I. Performance and egg traits.Poultry science · 2026Article
- Impact of dietary myo-inositol supplements on immune cell distribution and cytokine expression in laying hens of two different strains.Poultry science · 2026Article
- Myo-inositol metabolism in two high-performance laying hen strains at different production periods.Poultry science · 2026Article
- Divergent jejunal cis- and trans-eQTLs and their microbiome associations following a diet lacking mineral phosphorus supplements in laying hens.BMC genomics · 2026Article
- Mechanistic understanding of female reproductive aging based on the chicken model.Journal of animal science and biotechnology · 2026Review
- Impact of feeding diets without mineral P supplement on the immune system of two laying hen strains.Poultry science · 2026Article
- Effects of dietary myo-inositol supplementation on the expression of fibroblast growth factor 23 (FGF23) and αKlotho in two commercial laying hen strains.Poultry science · 2026Article
- Effects of dietary non-phytate phosphorus on performance, egg quality, and bone traits in laying hens of different ages.Poultry science · 2025Article
- Effects of a transient lack of dietary mineral phosphorus on renal gene expression and plasma metabolites in two high-yielding laying hen strains.BMC genomics · 2025Article
- Article
- A Novel Bacterial 6-Phytase Improves Productive Performance, Precaecal Digestibility of Phosphorus, and Bone Mineralization in Laying Hens Fed a Corn-Soybean Meal Diet Low in Calcium and Available Phosphorus.The journal of poultry science · 2023Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The objective of this contribution was to summarize from scientific literature the optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens. The considered studies were one meta-analysis from 2012 and original studies published since then. Dietary treatments in the studies included variation in supplementation with mineral P sources and phytase. The studies investigated different periods of production and varied in duration but data were insufficient to analyze such factors in a systematic way. No study showed a positive effect on performance and eggshell when the NPP concentration was increased above 2.2 g NPP/kg of feed without the use of phytase. At such level, no consistent impairment of various bone quality traits were found but only few studies on bone quality traits were published. Overall, the data suggested that not more than 2.2 g NPP/kg of feed is needed for laying hens in different stages of production. This value can be reduced when phytase is added to the feed. Such reduction may differ depending on factors such as phytate content of the feed and phytase dosage. However, data are insufficient for calculating precise values of reduction. While phytate degradation in laying hens was markedly increased by phytase supplementation in several studies, effects of phytase supplementation on performance and bone traits in laying hens were less conclusive probably because the hens were supplied more than their NPP requirement. Transition to a system based on digestible P for laying hens similar to broiler chickens may support more precise P nutrition and more sustainable egg production in the future.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.