ArticleAnimals : an open access journal from MDPI2021
Stress during Commercial Hatchery Processing Induces Long-Time Negative Cognitive Judgement Bias in Chickens.
Article in Animals : an open access journal from MDPI, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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.
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.
Who cites it
11 citing papers in PubMed, 25 citations in OpenAlex.
- Different chick processing holding devices reveal welfare and stress effects via novel down-feather biomarkers.Poultry science · 2026Article
- Individual variation in play in young chickens - assessment and connection to affective state and personality.Scientific reports · 2026Article
- Alleviating isolation stress in chickens: The benefits of home pen playback and mirrors.PloS one · 2025Article
- A two-step Bayesian network approach to identify key SNPs associated to multiple phenotypic traits in four purebred laying hen lines.PloS one · 2024Article
- Effect of combined in ovo administration of zinc glycine chelate (Zn-Gly) and a multistrain probiotic on the modulation of cellular and humoral immune responses in broiler chickens.Poultry science · 2023Article
- Group level and individual activity of broiler chickens hatched in 3 different systems.Poultry science · 2023Article
- Enhancing their quality of life: environmental enrichment for poultry.Poultry science · 2023Article
- Article
- Commercial hatchery practices have long-lasting effects on laying hens' spatial behaviour and health.PloS one · 2023Article
- Play ontogeny in young chickens is affected by domestication and early stress.Scientific reports · 2022Article
- Effects of stress during commercial hatching on growth, egg production and feather pecking in laying hens.PloS one · 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 1 institution in 1 country.
Funding
Abstract
Worldwide, billions of laying hen chicks are incubated and processed under highly industrialised circumstances every year, which, as we have previously shown, has long-lasting effects. Here, we measured corticosterone incorporated in down feathers to investigate possible stress during the incubation and showed that commercially incubated chicks did not have elevated levels of feather corticosterone, which implies that the main part of the stress effects from hatchery originates from the perinatal period and the handling immediately post-hatch. Further, we investigated how the early hatchery stress affects the chicks' cognitive welfare state, i.e., "optimism" and "pessimism". We exposed commercially hatched chickens to a positive cue, an aversive cue and ambiguous cues. The birds were tested at 1 and 10 w of age and the behaviour was compared with that of non-stressed chicks. Latencies to approach ambiguous cues were longer for the stressed chicks, both at 1 (
Indexed as
Identifiers
What OpenQuestion holds
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.