Evidence map›Paper›PMID 26479370›Full record

ReviewAnimals : an open access journal from MDPI2015

Air Quality in Alternative Housing Systems May Have an Impact on Laying Hen Welfare. Part I-Dust.

Bruce David, Randi Oppermann Moe, Virginie Michel, Vonne Lund, Cecilie Mejdell

Abstract readReview
In one paragraph

Review in Animals : an open access journal from MDPI, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Validation of Methods for Assessment of Dust Levels in Layer Barns.Animals : an open access journal from MDPI · 2023
    Article
  3. Article
  4. Article
  5. The Relationships between Damaging Behaviours and Health in Laying Hens.Animals : an open access journal from MDPI · 2022
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Evaluation of Microbiological and Chemical Contaminants in Poultry Farms.International journal of environmental research and public health · 2016
    Article
  14. Review
  15. Review
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.

Bruce DavidNorwegian Veterinary Institute, P.O. Box 750 Sentrum, Oslo 0106, Norway. bruce.david@vetinst.no.
Randi Oppermann MoeNorwegian University of Life Sciences, P.O. Box 8146 Dep., Oslo 0033, Norway. randi.moe@nmbu.no.
Virginie MichelFrench Agency for Food, Environmental and Occupational Health Safety (Anses), P.O.Box 53, Ploufragan 22440, France. virginie.MICHEL@anses.fr.
Vonne Lund
Cecilie MejdellNorwegian Veterinary Institute, P.O. Box 750 Sentrum, Oslo 0106, Norway. cecilie.mejdell@vetinst.no.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The new legislation for laying hens in the European Union put a ban on conventional cages. Production systems must now provide the hens with access to a nest, a perch, and material for dust bathing. These requirements will improve the behavioral aspects of animal welfare. However, when hens are kept with access to litter, it is a concern that polluted air may become an increased threat to health and therefore also a welfare problem. This article reviews the literature regarding the health and welfare effects birds experience when exposed to barn dust. Dust is composed of inorganic and organic compounds, from the birds themselves as well as from feed, litter, and building materials. Dust may be a vector for microorganisms and toxins. In general, studies indicate that housing systems where laying hens have access to litter as aviaries and floor systems consistently have higher concentrations of suspended dust than caged hens with little (furnished cages) or no access to litter (conventional cages). The higher dust levels in aviaries and floor housing are also caused by increased bird activity in the non-cage systems. There are gaps in both the basic and applied knowledge of how birds react to dust and aerosol contaminants, i.e., what levels they find aversive and/or impair health. Nevertheless, high dust levels may compromise the health and welfare of both birds and their caretakers and the poor air quality often found in new poultry housing systems needs to be addressed. It is necessary to develop prophylactic measures and to refine the production systems in order to achieve the full welfare benefits of the cage ban.

Indexed as

aviariesbehaviorfurnished cageshealthlaying hensloose housing

Identifiers

PMID26479370
PMCPMC4598690

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.