Exploring the effects of lysozyme dietary supplementation on laying hens: performance, egg quality, and immune response

Frontiers in Veterinary Science

Veterinary Science

Shehata Zeid¹  Suqin Hang¹  Zaili Xiao²  Fan Zhang²  Shibin Ye²  Chaoyu Wen²  Baichuan Deng²  Shansong He²  Pinfeng Liao²  Kang Yang²  Dan Guo²  Zhongquan Xin²  Limeng Zhang²  Daniel Sindaye³ 

[1] Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, Laboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, China;Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, China;Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, China;Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, Laboratory of Gastrointestinal Microbiology, National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, Nanjing, China;

关键词: lysozyme;    laying performance;    biochemical indices;    egg quality;    body immunity;    intestinal morphology;   

DOI  :  10.3389/fvets.2023.1273372

 received in 2023-08-06, accepted in 2023-09-18,  发布年份 2023

来源: Frontiers

【 摘 要 】

An experiment was conducted to evaluate the dietary supplementation with lysozyme's impacts on laying performance, egg quality, biochemical analysis, body immunity, and intestinal morphology. A total of 720 Jingfen No. 1 laying hens (53 weeks old) were randomly assigned into five groups, with six replicates in each group and 24 hens per replicate. The basal diet was administered to the laying hens in the control group, and it was supplemented with 100, 200, 300, or 400 mg/kg of lysozyme (purity of 10% and an enzyme activity of 3,110 U/mg) for other groups. The preliminary observation of the laying rate lasted for 4 weeks, and the experimental period lasted for 8 weeks. The findings demonstrated that lysozyme might enhance production performance by lowering the rate of sand-shelled eggs (P < 0.05), particularly 200 and 300 mg/kg compared with the control group. Lysozyme did not show any negative effect on egg quality or the health of laying hens (P > 0.05). Lysozyme administration in the diet could improve intestinal morphology, immune efficiency, and nutritional digestibility in laying hens when compared with the control group (P < 0.05). These observations showed that lysozyme is safe to use as a feed supplement for the production of laying hens. Dietary supplementation with 200 to 300 mg/kg lysozyme should be suggested to farmers as a proper level of feed additive in laying hens breeding.

【 授权许可】

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Copyright © 2023 Sindaye, Xiao, Wen, Yang, Zhang, Liao, Zhang, Xin, He, Ye, Guo, Hang, Zeid and Deng.