Evidence map›Paper›PMID 34229219›Full record

ArticlePoultry science2021

Dietary soluble flaxseed oils as a source of omega-3 polyunsaturated fatty acids for laying hens.

Sang Hyeok Lee, Yoo Bhin Kim, Da-Hye Kim, Dong-Won Lee, Hong-Gu Lee, Rajesh Jha, Kyung-Woo Lee

Open access · goldAbstract read
In one paragraph

Article in Poultry science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
  2. Evaluation of the role ofVeterinary and animal science · 2026
    Article
  3. Dietary inclusion of beetroot (Veterinary and animal science · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Supplementing Sacha Inchi (Veterinary sciences · 2025
    Article
  10. Article
  11. Article
  12. Effects of Breeds on the Content of Functional Nutrition in Eggs.Animals : an open access journal from MDPI · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

7 authors at 2 institutions in 2 countries.

Sang Hyeok LeeDepartment of Animal Science and Technology, Konkuk University, Gwangjin-gu, Seoul 05029, South Korea.
Yoo Bhin KimDepartment of Animal Science and Technology, Konkuk University, Gwangjin-gu, Seoul 05029, South Korea.
Da-Hye KimDepartment of Animal Science and Technology, Konkuk University, Gwangjin-gu, Seoul 05029, South Korea.
Dong-Won LeeHaitnim Bio Inc., Icheon-si, Gyeonggi-do, 17346, South Korea.
Hong-Gu LeeDepartment of Animal Science and Technology, Konkuk University, Gwangjin-gu, Seoul 05029, South Korea.
Rajesh JhaDepartment of Human Nutrition, Food and Animal Sciences, College of Tropical Agricultural and Human Resources, University of Hawaii at Manoa, Honolulu, HI 96822, USA.
Kyung-Woo LeeDepartment of Animal Science and Technology, Konkuk University, Gwangjin-gu, Seoul 05029, South Korea. Electronic address: kyungwoolee@konkuk.ac.kr.
Konkuk University · KRUniversity of Hawaiʻi at Mānoa · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study investigated the effect of dietary soluble flaxseed oil (SFO), as a source of omega-3 polyunsaturated fatty acids, on the fatty acid composition of egg yolk and various indices including laying performance, egg quality, nutrient composition of eggs, egg stability upon storage, and serum characteristics in laying hens. A total of 210 52-week-old Hy-Line Brown laying hens were assigned to one of 5 experimental diets. A corn-soybean meal-based control diet was mixed without or with SFO to reach the concentrations of 0.2, 0.4, 0.6, and 0.8% in diets and fed for 4 wk. Dietary SFO did not affect laying performance and egg quality. Increasing dietary SFO linearly increased the pH of yolk at 7, 14, and 28 d following storage at room temperature (P < 0.05). Malondialdehyde contents in egg yolks were quadratically increased (P < 0.05) at 0, 7, and 21 d following storage as the inclusion levels of SFO increased in diets. A significant increase (P < 0.05) in total omega-3 polyunsaturated fatty acids and docosahexaenoic acid, but not α-linolenic acid and eicosapentaenoic acid, was deposited in egg yolks at 2 and 4 wk following the SFO feeding. Finally, dietary SFO did not affect serum parameters such as total cholesterol, triglyceride, high-density lipoprotein cholesterol, and nitric oxide. It is concluded that adding SFO into the diets of laying hens can be an efficient strategy to enrich the omega-3 polyunsaturated fatty acids, including docosahexaenoic acid in eggs.

Indexed as

Fatty Acids, Omega-3FlaxAnimal FeedAnimalsChickensDietDietary SupplementsEgg YolkFatty AcidsFemaleOvumFatty AcidsFatty Acids, Omega-3fatty acid compositionlaying henlaying performancelipid oxidationsoluble flaxseed oil

Identifiers

PMID34229219
PMCPMC8264210
OpenAlexW3165408971

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.