ArticleScientific reports2020
Keel bone fractures induce a depressive-like state in laying hens.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 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.
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Who cites it
23 citing papers in PubMed, 62 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
- Variation in cranial and caudal keel bone composition and its association with keel damage severity in laying hens.Poultry science · 2026Article
- Comparison of keel bone traits, eggshell production, and physiological parameters between a hybrid layer and two low-performing chicken genotypes.Frontiers in physiology · 2026Article
- Article
- Animal Welfare in Colombian Poultry Industry: Exploring Veterinarians' Perceptions, Attitudes, Knowledge, Barriers, and Professional Profiles.Veterinary medicine international · 2026Article
- Understanding the Causes of Keel Bone Damage and Its Effects on the Welfare of Laying Hens.Animals : an open access journal from MDPI · 2024Review
- 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
- Keel bone fractures affect laying hens' mobility, but no evidence for reciprocal effects.PloS one · 2024Article
- Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds.PloS one · 2024Article
- Intraobserver repeatability for a standardized protocol to quantify keel bone damage in laying hens using discrete and continuous radiographic measures.Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association · 2023Article
- Sex impacts pain behaviour but not emotional reactivity of lambs following ring tail docking.PeerJ · 2023Article
- Commercial hatchery practices have long-lasting effects on laying hens' spatial behaviour and health.PloS one · 2023Article
- Poor body condition is associated with lower hippocampal plasticity and higher gut methanogen abundance in adult laying hens from two housing systems.Scientific reports · 2022Article
- Constant light in early life induces fear-related behavior in chickens with suppressed melatonin secretion and disrupted hippocampal expression of clock- and BDNF-associated genes.Journal of animal science and biotechnology · 2022Article
- Keel bone damage affects behavioral and physiological responses related to stress and fear in two strains of laying hens.Journal of animal science · 2022Article
- A tagged visual analog scale is a reliable method to assess keel bone deviations in laying hens from radiographs.Frontiers in veterinary science · 2022Article
- Telencephalic regulation of the HPA axis in birds.Neurobiology of stress · 2021Article
- Keel Bone Damage in Laying Hens-Its Relation to Bone Mineral Density, Body Growth Rate and Laying Performance.Animals : an open access journal from MDPI · 2021Article
- Article
- A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages.Animals : an open access journal from MDPI · 2020Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In commercial flocks of laying hens, keel bone fractures (KBFs) are prevalent and associated with behavioural indicators of pain. However, whether their impact is severe enough to induce a depressive-like state of chronic stress is unknown. As chronic stress downregulates adult hippocampal neurogenesis (AHN) in mammals and birds, we employ this measure as a neural biomarker of subjective welfare state. Radiographs obtained longitudinally from Lohmann Brown laying hens housed in a commercial multi-tier aviary were used to score the severity of naturally-occurring KBFs between the ages of 21-62 weeks. Individual birds' transitions between aviary zones were also recorded. Focal hens with severe KBFs at 3-4 weeks prior to sampling (n = 15) had lower densities of immature doublecortin-positive (DCX
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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.