Evidence map›Paper›PMID 32537141›Full record

ArticleJournal of animal science and biotechnology2020

Eggshell and environmental bacteria contribute to the intestinal microbiota of growing chickens.

Joel J Maki, Elizabeth A Bobeck, Matthew J Sylte, Torey Looft

Open access · goldAbstract read
In one paragraph

Article in Journal of animal science and biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

46 citing papers in PubMed, 83 citations in OpenAlex.

  1. Gut microbes · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Establishment of In OvoAnimals : an open access journal from MDPI · 2026
    Article
  6. Article
  7. Article
  8. Alternative protocols for sanitizing hatching eggs and their effects on the microbiota of eggshell surface and chick yolk sac.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026
    Article
  9. Article
  10. Animals : an open access journal from MDPI · 2026
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  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

4 authors at 3 institutions in 1 country.

Joel J MakiFood Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, US Department of Agriculture, 1920 Dayton Ave, Ames, IA 50010 USA.
Elizabeth A BobeckDepartment of Animal Science, Iowa State University, Ames, IA 50011 USA.
Matthew J SylteFood Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, US Department of Agriculture, 1920 Dayton Ave, Ames, IA 50010 USA.
Torey LooftFood Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, US Department of Agriculture, 1920 Dayton Ave, Ames, IA 50010 USA.
Agricultural Research Service · USIowa State University · USNational Animal Disease Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe initial intestinal microbiota acquired from different sources has profound impacts on animal health and productivity. In modern poultry production practices, the source(s) of the establishing microbes and their overall contribution during development of gastrointestinal tract communities are still unclear. Using fertilized eggs from two independent sources, we assessed the impact of eggshell- and environmental-associated microbial communities on the successional processes and bacterial community structure throughout the intestinal tract of chickens for up to 6 weeks post-hatch.

resultsCulturing and sequencing techniques identified a viable, highly diverse population of anaerobic bacteria on the eggshell. The jejunal, ileal, and cecal microbial communities for the egg-only, environment-only, and conventionally raised birds generally displayed similar successional patterns characterized by increasing community richness and evenness over time, with strains of

conclusionWe identified distinct intestinal microbial communities and differing cecal short-chain fatty acid profiles between birds exposed to the microbiota associated with either the eggshell or environment, and those of conventionally hatched birds. Our data suggest the eggshell plays an appreciable role in the development of the chicken intestinal microbiota, especially in the jejunum and ileum where the community structure of the eggshell-only birds was similar to the structure of conventionally hatched birds. Our data identify a complex interplay between the eggshell and environmental microbiota during establishment and succession within the chicken gut. Further studies should explore the ability of eggshell- and environment-derived microbes to shape the dynamics of succession and how these communities can be targeted through interventions to promote gut health and mitigate food-borne pathogen colonization in poultry.

Indexed as

16S rRNA geneEggshell microbiotaEnvironmental microbiotaHatchingIntestinal colonizationSCFASuccession

Identifiers

PMID32537141
PMCPMC7288515
OpenAlexW3035607191

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.