China Animal Husbandry & Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (6): 2675-2683.doi: 10.16431/j.cnki.1671-7236.2025.06.020

• Nutritionand Feed • Previous Articles    

Effects of 405 nm Spectrally Synergistic TiO2-based LED Light Sources on Production Performance,Health and House Microbiology of Laying Hens

JI Yifan1, SHI Lei1, CHEN Yifan1, LIU Zhe1, YUAN Wen1, ZHENG Xu1, LI Yanhui1, MA Lifeng2, SU Dan2, YE Renliang3, SU Bofei1, CHEN Hui1   

  1. 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001, China;
    2. Shijiazhuang Yukou Poultry Industry Co., Ltd., Shijiazhuang 050600, China;
    3. Jiaxing ILOS Intelligent Lighting Co., Ltd., Jiaxing 314100, China
  • Received:2024-09-10 Published:2025-05-27

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Abstract: 【Objective】 This experiment aimed to investigate the effects of a 405 nm spectrally light-emitting diode (LED) light source combined with titanium dioxide (TiO2) applied in hen houses on the production performance,health,and microbial content in the housing environment of laying hens.【Method】 A total of 480 39-week-old Jinghong No.1 laying hens with similar egg production rates were randomly divided into 2 groups,each with 6 replicates (40 hens per replicate).The control group used conventional LED lighting,while the experimental group used a 405 nm spectrally synergistic TiO2-based LED light sources.The trial included a 1-week pre-trial period and a 12-week formal trial period.Daily production performance data were recorded.On day 72 of the trial,egg quality,tonic immobility (TI) duration,serum antioxidant and immune indices,antibody titers against Avian influenza virus H9,H7 and H5 subtypes,Newcastle disease virus (NDV),and Egg drop syndrome virus (EDSV),as well as microbial content in the housing environment,were measured.【Result】 ①The hen-housed egg production,hen-day egg production,and egg production rate of experimental group were significantly higher than those of control group (P＜0.05),while there was no significant differences in egg quality between the two groups (P＞0.05).②There was no significant difference in TI duration,serum antioxidant indices and immune indices between experimental and control groups (P＞0.05).The antibody titers against Avian influenza virus H5 subtype of hens in experimental group were significantly higher than those in control group (P＜0.05),while there was no significant difference in Avian influenza virus H7 and H9 subtypes,NDV,or EDSV antibody titers (P＞0.05).③ Compared to control group，the microbial content in the air and on surfaces in experimental group decreased by 41.43% and 34.49%,respectively (P＜0.05).Before and after chemical spray disinfection,the total number of microorganisms in the air of experimental group was significantly lower than that of control group at each time point (P＜0.05).The killing rate of spray disinfection in experimental group increased by 8.41 percentage points compared with control group at 12 hours after disinfection,and the recovery rate of microorganisms in the air in the house at 48 hours after disinfection decreased by 5.34 percentage points compared with control group.【Conclusion】 The application of a 405 nm spectrally synergistic TiO2-based LED light sources in laying hen houses improved egg production performance without compromising flock health.Compared to conventional LED lighting,the use of the 405 nm spectrally synergistic TiO2-based LED light sources reduced airborne microbial content by 41.43% and surface microbial content by 34.49% in the housing environment.Additionally,it enhanced the efficacy of routine spray disinfection and suppressed microbial regrowth.

Key words: 405 nm spectrum; TiO2; production performance; egg quality; environmental microorganisms

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