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Received: 2018-10-18

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Journal of Zhejiang University SCIENCE B 2019 Vol.20 No.11 P.877-890


Effects of dietary glycerol monolaurate on productive performance, egg quality, serum biochemical indices, and intestinal morphology of laying hens

Author(s):  Min-Jie Zhao, Hai-Ying Cai, Meng-Yun Liu, Ling-Li Deng, Yang Li, Hui Zhang, Feng-Qin Feng

Affiliation(s):  College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China; more

Corresponding email(s):   fengfq@zju.edu.cn

Key Words:  Glycerol monolaurate (GML), Laying hen, Productive performance, Egg quality, Lipid metabolism

Min-Jie Zhao, Hai-Ying Cai, Meng-Yun Liu, Ling-Li Deng, Yang Li, Hui Zhang, Feng-Qin Feng. Effects of dietary glycerol monolaurate on productive performance, egg quality, serum biochemical indices, and intestinal morphology of laying hens[J]. Journal of Zhejiang University Science B, 2019, 20(11): 877-890.

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journal="Journal of Zhejiang University Science B",
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%T Effects of dietary glycerol monolaurate on productive performance, egg quality, serum biochemical indices, and intestinal morphology of laying hens
%A Min-Jie Zhao
%A Hai-Ying Cai
%A Meng-Yun Liu
%A Ling-Li Deng
%A Yang Li
%A Hui Zhang
%A Feng-Qin Feng
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%I Zhejiang University Press & Springer
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A1 - Min-Jie Zhao
A1 - Hai-Ying Cai
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A1 - Hui Zhang
A1 - Feng-Qin Feng
J0 - Journal of Zhejiang University Science B
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DOI - 10.1631/jzus.B1800530

This article has been retracted. Please see https://doi.org/10.1631/jzus.B18r0530 glycerol monolaurate (GML) has been widely used as an effective antibacterial emulsifier in the food industry. A total of 360 44-week-old Hy-Line brown laying hens were randomly distributed into four groups each with six replicates of 15 birds, and fed with corn-soybean-meal-based diets supplemented with 0, 0.15, 0.30, and 0.45 g/kg GML, respectively. Our results showed that 0.15, 0.30, and 0.45 g/kg GML treatments significantly decreased feed conversion ratios (FCRs) by 2.65%, 7.08%, and 3.54%, respectively, and significantly increased the laying rates and average egg weights. For egg quality, GML drastically increased albumen height and Haugh units, and enhanced yolk color. Notably, GML increased the concentrations of polyunsaturated and monounsaturated fatty acids and reduced the concentration of total saturated fatty acids in the yolk. The albumen composition was also significantly modified, with an increase of 1.02% in total protein content, and increased contents of His (4.55%) and Glu (2.02%) under the 0.30 g/kg GML treatment. Additionally, GML treatments had positive effects on the lipid metabolism of laying hens, including lowering the serum triglyceride and total cholesterol levels and reducing fat deposition in abdominal adipose tissue. Intestinal morphology was also improved by GML treatment, with increased villus length and villus height to crypt depth ratio. Our data demonstrated that GML supplementation of laying hens could have beneficial effects on both their productivity and physiological properties, which indicates the potential application of GML as a functional feed additive and gives us a new insight into this traditional food additive.


方法:将360只海兰褐蛋鸡随机分为4组,每组6个重复,每个重复15只蛋鸡,分别饲喂以玉米-豆粕为主的日粮,并在日粮中分别添加0、0.15、0.30和0.45 g/kg GML.饲喂8周后,测定蛋鸡的产蛋性能、蛋品质、蛋清以及蛋黄相关营养成分组成、血清生理生化以及激素相关指标,并对空肠和附睾脂肪切片进行形态学观察,系统研究GML对蛋鸡的影响.
结论:0.15、0.30和0.45 g/kg GML处理能显著降低饲料转化率,并显著提高产蛋率和平均蛋重.在鸡蛋品质方面,GML显著提高了蛋白的高度和哈夫单位,并增强了蛋黄的颜色.此外,GML还增加了蛋黄中多不饱和脂肪酸和单不饱和脂肪酸的浓度,降低了蛋黄中总饱和脂肪酸的浓度.蛋白组成在GML作用下也有显著改变,其中0.30 g/kg GML显著增加了总蛋白含量以及组氨酸和谷氨酸的含量.GML对蛋鸡脂代谢也表现除了积极作用,能显著降低血清甘油三酯和总胆固醇水平,减少腹部脂肪组织的沉积.在改善肠道形态方面,GML增加了绒毛长度以及绒毛高度与隐窝深度的比值.总体来说,GML对蛋鸡的生产性能和生理特性均有显著的改善作用,表明GML有作为功能性饲料添加剂的潜能,拓宽了传统食品添加剂GML的应用领域.


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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