Evidence map›Paper›PMID 33585618›Full record

ArticleFrontiers in veterinary science2021

Analysis of Hair Cortisol as an Indicator of Chronic Stress in Pigs in Two Different Farrowing Systems.

Dierck-Hinrich Wiechers, Susanne Brunner, Swetlana Herbrandt, Nicole Kemper, Michaela Fels

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Frontiers in veterinary science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Article
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  7. Abiotic stressors in poultry production: A comprehensive review.Journal of animal physiology and animal nutrition · 2025
    Review
  8. Article
  9. Article
  10. Review
  11. Gilts prefer an open pen to a stall.Scientific reports · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Freedom to Move: Free Lactation Pens Improve Sow Welfare.Animals : an open access journal from MDPI · 2022
    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

5 authors.

Dierck-Hinrich WiechersInstitute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany.
Susanne BrunnerDepartment of Statistics, TU Dortmund University, Dortmund, Germany.
Swetlana HerbrandtDepartment of Statistics, TU Dortmund University, Dortmund, Germany.
Nicole KemperInstitute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany.
Michaela FelsInstitute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Confinement to farrowing crates is known to prevent sows from performing natural behavior, impairing animal welfare and possibly causing chronic stress. Hair cortisol analyses are increasingly used to detect chronic stress in animals. In the present study, hair samples were collected in the neck of sows kept either in farrowing crates (FC,

Indexed as

chronic stressfarrowing penhairhair cortisolpig

Identifiers

PMID33585618
PMCPMC7876061

What OpenQuestion holds

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LicenceCC BY
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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.