Evidence map›Paper›PMID 38002177›Full record

ArticleFoods (Basel, Switzerland)2023

Effects of Enriched-in-Oleuropein Olive Leaf Extract Dietary Supplementation on Egg Quality and Antioxidant Parameters in Laying Hens.

Georgios A Papadopoulos, Styliani Lioliopoulou, Nikolaos Nenadis, Ioannis Panitsidis, Ioanna Pyrka, Aggeliki G Kalogeropoulou, George K Symeon, Alexios-Leandros Skaltsounis, Panagiotis Stathopoulos, Ioanna Stylianaki and 4 more

Open access · goldAbstract read
In one paragraph

Article in Foods (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.4field-weighted citation impact, top 12% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 13 citations in OpenAlex.

  1. The Effect of Low-Fishmeal Feed Including an Olive Leaf Extract (Animals : an open access journal from MDPI · 2026
    Article
  2. Article
  3. Effects ofVeterinary and animal science · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 3 institutions in 1 country.

Georgios A PapadopoulosLaboratory of Animal Husbandry, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0003-0958-4121
Styliani LioliopoulouLaboratory of Animal Husbandry, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Nikolaos NenadisLaboratory of Food Chemistry and Technology, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0002-4624-0419
Ioannis PanitsidisLaboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Ioanna PyrkaLaboratory of Food Chemistry and Technology, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0002-4050-7231
Aggeliki G KalogeropoulouLaboratory of Food Chemistry and Technology, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
George K SymeonInstitute of Animal Science, Hellenic Agricultural Organisation-DEMETER, 58100 Giannitsa, Greece.ORCID 0000-0002-3782-7031
Alexios-Leandros SkaltsounisDepartment of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece.
Panagiotis StathopoulosDepartment of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece.
Ioanna StylianakiLaboratory of Pathology, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Dimitrios GalamatisDepartment of Animal Science, School of Agricultural Sciences, University of Thessaly, 41500 Larissa, Greece.
Anatoli PetridouLaboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0002-5060-1950
Georgios ArsenosLaboratory of Animal Husbandry, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0003-3224-5128
Ilias GiannenasLaboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.ORCID 0000-0003-3145-3734
Aristotle University of Thessaloniki · GRNational and Kapodistrian University of Athens · GRUniversity of Thessaly · GR

Funding

European Regional Development Fund Τ2EDK-03891Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation Τ2EDK-03891
6 · The paper itself

Abstract

The objective of the present study was to evaluate the effects of an olive leaf extract obtained with an up-to-date laboratory method, when supplemented at different levels in laying hens' diets, on egg quality, egg yolk antioxidant parameters, fatty acid content, and liver pathology characteristics. Thus, 96 laying hens of the ISA-Brown breed were allocated to 48 experimental cages with two hens in each cage, resulting in 12 replicates per treatment. Treatments were: T1 (Control: basal diet); T2 (1% olive leaf extract); T3 (2.5% olive leaf extract); T4 (Positive control: 0.1% encapsulated oregano oil). Eggshell weight and thickness were improved in all treatments compared to the control, with T2 being significantly higher till the end of the experiment (

Indexed as

antioxidantsegg qualitylaying hensoliveolive byproductolive leaf extractpoultry

Identifiers

PMID38002177
PMCPMC10670734
OpenAlexW4388653560

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.