ArticlePoultry science2023
Effects of protease enzyme supplementation and varying levels of amino acid inclusion on productive performance, egg quality, and amino acid digestibility in laying hens from 30 to 50 weeks of age.
Article in Poultry science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed.
- Effects of phytase and protease supplementation, with and without considering their nutritional matrix values, on the productive performance of laying hens during the late‑lay period.Veterinary and animal science · 2026Article
- Determination and stage-specific prediction models for standardized ileal amino acid digestibility of corn in peak- and late-laying hens.Poultry science · 2026Article
- Evaluating phenotypic correlations between internal and external egg quality indicators of Hy-Line Brown laying hens at 35 weeks of age.Journal of animal science and technology · 2026Article
- Laying hen responses to balanced protein reduction on performance, egg quality, nitrogen balance, and fat and mineral utilization.Journal of animal science · 2026Article
- Prospects of feed additive incorporation in laying hen diets: a narrative review of principal biological effects and recent developments.Journal of animal science and technology · 2026Review
- Amino Acid Nutrition in Poultry: A Review.Animals : an open access journal from MDPI · 2025Review
- Role of a Precision Biotic Fed to Dekalb White Laying Hens at Peak Production.Animals : an open access journal from MDPI · 2025Article
- Productive and economic effects of addingVeterinary world · 2025Article
- Review
- Effects of different supplemental levels of protease DE200 on the production performance, egg quality, and cecum microflora of laying hens.Journal of animal science · 2024Article
- Effects of various supplemental levels of multi-enzyme complex on amino acid profiles in egg yolk, antioxidant capacity, cecal microbial community and metabolites of laying hens.Frontiers in microbiology · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
An experiment was conducted to evaluate the effects of protease supplementation and reduced digestible amino acid (dAA)/ crude protein (CP) level on productive performance, AA digestibility, and egg quality parameters in Hy-Line W-36 laying hen from 30 to 50 wk of age. A total of 768 hens (12 replicates of 8 hens per treatment) were equally and randomly allocated into 8 experimental diets in a 4 × 2 factorial arrangement of dAA/CP level (100, 95, 90, and 85% of breeder recommendation) and protease (exclusion or inclusion). Protease was added at 60 g/metric ton of feed in the inclusion group. Hens were housed in raised-wire cages with a stocking density of 870 cm
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Registered trials
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.