ArticleFrontiers in physiology2023
Effects of a variable light intensity lighting program on the welfare and performance of commercial broiler chickens.
Article in Frontiers in physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Physiological role of light modulation on poultry production, reproductions and welfare: a-systematic review.Veterinary research communications · 2026Pooled it
- Article
- Early-life thermal stress and mid-growth light intensity as key environmental predictors of lameness in commercial Cobb 500 broilers under tropical closed-house production systems.Veterinary world · 2026Article
- Increased activity in broiler chickens is associated with better feed conversion.Poultry science · 2026Article
- Impact of Lighting Intensity on Welfare and Performance in Broiler Chickens.Animals : an open access journal from MDPI · 2025Article
- Effectual Environmental Enrichments for Commercial Broiler Chickens.Animals : an open access journal from MDPI · 2025Review
- Effects of Light Wavelength on Broiler Performance, Blood Cell Profiles, Stress Levels, and Tibiotarsi Morphology.Animals : an open access journal from MDPI · 2025Article
- Light intensity preferences of broiler chickens is affected by breed, age, time of day and behaviour.Scientific reports · 2025Article
- Effect of different colors and intensity of light emitting diode on the production performance, egg quality, hormonal profile and the economics of layers kept in environment control house.Tropical animal health and production · 2025Article
- Abiotic stressors in poultry production: A comprehensive review.Journal of animal physiology and animal nutrition · 2025Review
- Effects of Enclosure Complexity and Design on Behaviour and Physiology in Captive Animals.Animals : an open access journal from MDPI · 2024Article
- Effects of Environmental Enrichments on Welfare and Hepatic Metabolic Regulation of Broiler Chickens.Animals : an open access journal from MDPI · 2024Article
- A Practical Approach to Providing Environmental Enrichment to Pigs and Broiler Chickens Housed in Intensive Systems.Animals : an open access journal from MDPI · 2023Article
- LED Light Applied to the Feeder: Impact on Growth Performances of Chickens under Productive Conditions.Veterinary sciences · 2023Article
- Intermittent light program impacts on reproductive performance, health and welfare of breeding hens.Archives animal breeding · 2023Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Our previous variable-light intensity lighting program studies indicate the light intensity preference behavior of broilers for their daily activity including eating and resting. To evaluate the effects of variable-light intensity lighting program on performance and welfare of broilers, four commercial trials were conducted for looking at behaviors, mortality, leg-health, performance, and brain welfare indicator genes including tryptophan hydroxylase 2 and tyrosine hydroxylase (TH), glucocorticoid receptor (GR), brain-derived neurotropic factor (BDNF), and melanopsin (Opn4) gene expression. One-day-old broilers were housed in four commercial broiler houses. Each quadrant (section) of the house was placed with 4,800 chicks. A total of four lighting programs began on day 7 with 5 lux (lx), 20 lx, natural light (NL, 480 lx), and variable light (2-5/40 lx) using LED lights on a 16L:8D photoperiod. In the variable-light house, the number of dustbathing holes was significantly higher than that in natural-light houses and 5-lx and 20-lx houses. Daily physical activities, footpad condition, fear response to novel objects, body weight, feed conversion ratio, and the number of leg-problem induced culled birds were affected by the variable-light intensity lighting program. Expression of tryptophan hydroxylase 2 in the DRN and VTA of variable-light treated birds was lower than that of 5-lx- and 20-lx-treated birds on day 42 (
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