ArticleAnimals : an open access journal from MDPI2026
The Effect of Broiler-Targeted Lighting Programs on Productivity, Health, and Welfare.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors.
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Abstract
backgroundPoultry are highly sensitive to lighting photoperiod, intensity, and color, yet little research has combined these components into a single broiler-targeted lighting program. This study evaluated an integrated dynamic LED lighting program and a further red-light dawn/dusk addition on broiler productivity, health, and welfare.
methodsIn Experiment 1, 960 male Cobb 500 broilers were reared for 42 d under a conventional white-LED program (CON) or a dynamic blue-emphasis LED program with declining intensity and a gradually shortening photoperiod (i.e., a lengthening dark period; DYN). In Experiment 2, 960 broilers were reared for 35 d under DYN or DYN with a gradual red-light dawn/dusk transition (RDW). Growth performance, tibia strength and ash, intestinal morphology, blood corticosterone, the heterophil-to-lymphocyte ratio, physical asymmetry, tonic immobility, and inversion were measured, and an illustrative income-over-feed-cost analysis was performed.
resultsDYN broilers had higher body weight and lower feed conversion ratio than CON broilers (
conclusionsAn integrated, broiler-targeted dynamic lighting program improved growth, intestinal morphology, and stress/fear indicators relative to a conventional program, and adding a red dawn/dusk transition further improved skeletal and stress outcomes without compromising growth, supporting the practical, commercial-scale use of programmable LED technology to improve broiler welfare and productivity.
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