Evidence map›Paper›PMID 34361916›Full record

ArticleMicroorganisms2021

Eggshell and Feed Microbiota Do Not Represent Major Sources of Gut Anaerobes for Chickens in Commercial Production.

Jiri Volf, Magdalena Crhanova, Daniela Karasova, Marcela Faldynova, Tereza Kubasova, Zuzana Seidlerova, Alena Sebkova, Michal Zeman, Helena Juricova, Jitka Matiasovicova and 3 more

Abstract read
In one paragraph

Article in Microorganisms, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
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

14 citing papers in PubMed.

  1. Article
  2. Article
  3. Animals : an open access journal from MDPI · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review on skeletal disorders caused byThe veterinary quarterly · 2022
    Review
  13. Feed Safety and the Development of Poultry Intestinal Microbiota.Animals : an open access journal from MDPI · 2022
    Review
  14. 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

13 authors.

Jiri VolfVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Magdalena CrhanovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Daniela KarasovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Marcela FaldynovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Tereza KubasovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Zuzana SeidlerovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Alena SebkovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Michal ZemanVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.ORCID 0000-0002-0714-9831
Helena JuricovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Jitka MatiasovicovaVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.
Marian FoltynHatchery Vodnanske Kure, Komenskeho 75, 768 11 Chropyne, Czech Republic.
Zdenek TvrdonHatchery Vodnanske Kure, Komenskeho 75, 768 11 Chropyne, Czech Republic.
Ivan RychlikVeterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic.

Funding

Ministerstvo pro místní rozvoj ATCZ194Ministerstvo Zemědělství RVO0518
6 · The paper itself

Abstract

In this study, we addressed the origin of chicken gut microbiota in commercial production by a comparison of eggshell and feed microbiota with caecal microbiota of 7-day-old chickens, using microbiota analysis by 16S rRNA sequencing. In addition, we tested at which timepoint during prenatal or neonatal development it is possible to successfully administer probiotics. We found that eggshell microbiota was a combination of environmental and adult hen gut microbiota but was completely different from caecal microbiota of 7-day-old chicks. Similarly, we observed that the composition of feed microbiota was different from caecal microbiota. Neither eggshell nor feed acted as an important source of gut microbiota for the chickens in commercial production. Following the experimental administration of potential probiotics, we found that chickens can be colonised only when already hatched and active. Spraying of eggs with gut anaerobes during egg incubation or hatching itself did not result in effective chicken colonisation. Such conclusions should be considered when selecting and administering probiotics to chickens in hatcheries. Eggshells, feed or drinking water do not act as major sources of gut microbiota. Newly hatched chickens must be colonised from additional sources, such as air dust with spores of Clostridiales. The natural colonisation starts only when chickens are already hatched, as spraying of eggs or even chickens at the very beginning of the hatching process did not result in efficient colonisation.

Indexed as

caecumchickeneggshellfeedhatcherymicrobiota

Identifiers

PMID34361916
PMCPMC8305510

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.