ArticleAnimals : an open access journal from MDPI2022
Effects of Housing System on Anxiety, Chronic Stress, Fear, and Immune Function in Bovan Brown Laying Hens.
Article in Animals : an open access journal from MDPI, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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
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Who cites it
19 citing papers in PubMed, 37 citations in OpenAlex.
- Genome-Wide Association Analysis of Hippocampal Neuroplasticity as an Indicator of Stress Responsiveness in Laying Hens (Gallus gallus domesticus).Animal genetics · 2026Article
- Chronic stress and fear in fast- and slow-growing broilers as they age and gain weight when raised in simple or complex environments.Poultry science · 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
- Floor Eggs in Australian Cage-Free Egg Production.Animals : an open access journal from MDPI · 2025Article
- Exploring the genetic basis of Newcastle disease virus in chickens: a comprehensive review.Frontiers in immunology · 2025Review
- The Effect of Rearing and Adult Environment on HPA Axis Responsivity and Plumage Condition in Laying Hens.Animals : an open access journal from MDPI · 2024Article
- Effects of Housing Systems on Production Performance, Egg Quality, Tonic Immobility and Feather Score in Laying Hens.Veterinary medicine and science · 2024Article
- Feed additives and enrichment materials to reduce chicken stress, maximize productivity, and improve welfare.Veterinary world · 2024Review
- The Influence of Cecal Microbiota Transplantation on Chicken Injurious Behavior: Perspective in Human Neuropsychiatric Research.Biomolecules · 2024Review
- Using Different Cage Enrichments to Improve Rabbits' Performance, Behavior, and Welfare.Animals : an open access journal from MDPI · 2024Article
- Impacts of access to legume- or grass-based pasture on behaviour, physiological responses and bacterial load of laying hens.Heliyon · 2024Article
- Environmental complexity impacts anxiety in broiler chickens depending on genetic strain and body weight.Scientific reports · 2024Article
- Stress-Related Gene Expression in Liver Tissues from Laying Hens Housed in Conventional Cage and Cage-Free Systems in the Tropics.Veterinary medicine international · 2024Article
- Pharmacological validation of an attention bias test for conventional broiler chickens.PloS one · 2024Article
- Influence of Perch-Provision Timing on Anxiety and Fearfulness in Laying Hens.Animals : an open access journal from MDPI · 2023Article
- Measuring Chronic Stress in Broiler Chickens: Effects of Environmental Complexity and Stocking Density on Immunoglobulin-A Levels.Animals : an open access journal from MDPI · 2023Article
- Social-pair judgment bias testing in slow-growing broiler chickens raised in low- or high-complexity environments.Scientific reports · 2023Article
- Low Ca diet leads to increased Ca retention by changing the gut flora and ileal pH value in laying hens.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2023Article
- The Potential of Understory Production Systems to Improve Laying Hen Welfare.Animals : an open access journal from MDPI · 2022Review
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
The scientific community needs objective measures to appropriately assess animal welfare. The study objective was to assess the impact of housing system on novel physiological and behavioral measurements of animal welfare for laying hens, including secretory and plasma Immunoglobulin (IgA; immune function), feather corticosterone (chronic stress), and attention bias testing (ABT; anxiety), in addition to the well-validated tonic immobility test (TI; fearfulness). To test this, 184 Bovan brown hens were housed in 28 conventional cages (3 birds/cage) and 4 enriched pens (25 birds/pen). Feces, blood, and feathers were collected 4 times between week 22 and 43 to quantify secretory and plasma IgA and feather corticosterone concentrations. TI tests and ABT were performed once. Hens that were from cages tended to show longer TI, had increased feather corticosterone, and decreased secretory IgA at 22 weeks of age. The caged hens fed quicker, and more hens fed during the ABT compared to the penned hens. Hens that were in conventional cages showed somewhat poorer welfare outcomes than the hens in enriched pens, as indicated by increased chronic stress, decreased immune function at 22 weeks of age but no other ages, somewhat increased fear, but reduced anxiety. Overall, these novel markers show some appropriate contrast between housing treatments and may be useful in an animal welfare assessment context for laying hens. More research is needed to confirm these findings.
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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.