ArticlePeerJ2019
Application of open field, tonic immobility, and attention bias tests to hens with different ranging patterns.
Article in PeerJ, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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.
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Who cites it
30 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.
- Setting the stage to tag "n" track: a guideline for implementing, validating and reporting a radio frequency identification system for monitoring resource visit behavior in poultry.Poultry science · 2023Guideline
- Assessment of behaviour, performance, and blood parameters in Japanese quail under toxic stress of imidacloprid and its modulation by vitamin B complex.Scientific reports · 2026Article
- Impacts of Enrichment Type (Hut vs. Platform) on Chronic Stress and Anxiety in Six Fast- and Slow-Growing Broiler Strains.Animals : an open access journal from MDPI · 2026Article
- Assessment of Behavioral Predispositions of Selected Chicken Breeds for Use in Animal-Assisted Therapy: A Pilot Study.Animals : an open access journal from MDPI · 2026Article
- Effects of resveratrol in a chronic stress model of layer chicks: insights from transcriptomics, metabolomics, and network pharmacology.Poultry science · 2026Article
- Exercise-Related Personality Traits Are Associated with Gut Microbiome Composition and Meat Quality in Qingyuan Partridge Chickens.Foods (Basel, Switzerland) · 2026Article
- Traditional Transportation Methods and Their Influence on Local Chicken Welfare, Behavior, and Blood Profiles: A Policy Considerations.Veterinary sciences · 2025Article
- Differences between behavioral time budget and welfare indicators in two different slow-growing broiler genotypes kept in the free-range system.Veterinary research communications · 2025Article
- Effect of Stocking Density on Behavioural and Physiological Traits of Laying Hens.Animals : an open access journal from MDPI · 2025Article
- Alleviating isolation stress in chickens: The benefits of home pen playback and mirrors.PloS one · 2025Article
- Article
- Review
- Environmental complexity impacts anxiety in broiler chickens depending on genetic strain and body weight.Scientific reports · 2024Article
- Impacts of access to legume- or grass-based pasture on behaviour, physiological responses and bacterial load of laying hens.Heliyon · 2024Article
- The Effects ofAnimals : an open access journal from MDPI · 2024Article
- Neuronal plasticity in hippocampal neurons due to chronic mild stress and after stress removal in postnatal chicks.Journal of anatomy · 2024Article
- Influence of Perch-Provision Timing on Anxiety and Fearfulness in Laying Hens.Animals : an open access journal from MDPI · 2023Article
- Differences among domestic chicken breeds in tonic immobility responses as a measure of fearfulness.PeerJ · 2023Article
- Commercial layer hybrids kept under organic conditions: a comparison of range use, welfare, and egg production in two layer strains.Poultry science · 2022Article
- Effects of Housing System on Anxiety, Chronic Stress, Fear, and Immune Function in Bovan Brown Laying Hens.Animals : an open access journal from MDPI · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Assessment of negative affective states is a key component of animal welfare research. In laying hens, excessive fearfulness results in reduced production and increased sensitivity to stress. Fearfulness can be defined as a response to a known threat, but anxiety is a response to an unknown threat and may have similar negative consequences. The open field test and tonic immobility test are commonly applied to measure fearfulness in laying hens. An attention bias test that measured individual hen's responses to playback of a conspecific alarm call in the presence of food was recently pharmacologically validated using an anxiogenic drug but was confounded by the hen's typical motionless response in a novel environment. The current study used 56-week old free-range layers to further assess the validity of an attention bias test to differentiate ranging treatment groups in comparison with the open field and tonic immobility tests. The selected hens varied in their range use patterns as tracked by radio-frequency identification technology. 'Indoor' hens did not access the range and 'outdoor' hens ranged daily; previous research has confirmed higher fearfulness in hens that remain indoors. The tonic immobility test did not differentiate ranging groups (
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Registered trials
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.