ArticleFrontiers in veterinary science2020
Effects of Dark Brooder Rearing and Age on Hypothalamic Vasotocin and Feather Corticosterone Levels in Laying Hens.
Article in Frontiers in veterinary science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 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
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
9 citing papers in PubMed, 14 citations in OpenAlex.
- Why-Oh-Why? Dark Brooders Reduce Injurious Pecking, Though Are Still Not Widely Used in Commercial Rearing of Layer Pullets.Animals : an open access journal from MDPI · 2022Article
- Plumage Response of Young Turkeys to Diets with Increased Methionine to Lysine Ratios at Three Dietary Arginine Levels.Animals : an open access journal from MDPI · 2022Article
- Early life environment affects behavior, welfare, gut microbiome composition, and diversity in broiler chickens.Frontiers in veterinary science · 2022Article
- Novel strategies to improve chicken performance and welfare by unveiling host-microbiota interactions through hologenomics.Frontiers in physiology · 2022Article
- The Effect of Egg Laying on Feather and Plasma Corticosterone Concentrations in Turkey (Animals : an open access journal from MDPI · 2021Article
- Describing the growth and molt of modern domestic turkey (Meleagris gallopavo) primary wing feathers.Journal of animal science · 2020Article
- Corticosterone in feathers of laying hens: an assay validation for evidence-based assessment of animal welfare.Poultry science · 2020Article
- Smaller brains in laying hens: New insights into the influence of pure breeding and housing conditions on brain size and brain composition.Poultry science · 2020Article
- Psychological and Physiological Stress in Hens With Bone Damage.Frontiers in veterinary science · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chickens cannot independently thermoregulate at hatch and lack opportunity to behaviorally thermoregulate with a hen in the egg layer industry, thus barns are heated to thermoneutral temperatures. Dark brooders are low-energy-consuming hot plates, which may be environmentally advantageous while providing welfare-enhancing aspects of maternal care (i.e., shelter and separation of active and inactive individuals). Dark brooder use has been demonstrated to decrease injurious pecking and mortality well into the production period of layers. To further understand hen development around lay onset and effects of dark brooders on the brain and HPA-axis, we examined effects of rearing with dark brooders on expression of vasotocin (AVT) in the hypothalamus and corticosterone (CORT) in the feathers of in total 48 layer Isa Warren hens at 16 w and 28 w of age (
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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.