月桂酸单甘油酯对大口黑鲈生长性能、肌肉营养品质及肠道健康的影响

Effects of Glycerol Monolaurate on Growth Performance,Muscle Nutritional Quality and Intestinal Health of Micropterus salmoides

张毅 ¹刘滔 ²周秀珍 ¹王扬 ³赵敏洁 ⁴王旭堂 ⁵黄菊 ¹冯凤琴⁴

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作者信息

1. 浙江海洋大学食品与药学学院,舟山 316022
2. 湘湖实验室,杭州 311231
3. 浙江省水产技术推广总站,杭州 311110
4. 浙江大学生物系统工程与食品科学学院,杭州 310058
5. 杭州龙宇生物科技有限公司,杭州 310000
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摘要

本试验旨在研究月桂酸单甘油酯(GML)对大口黑鲈生长性能、肌肉营养品质及肠道健康的影响.试验选取体重为(37.81±1.12)g的大口黑鲈幼鱼1 200尾,随机分为4组,每组3个重复,每个重复100尾.对照组投喂基础饲料,试验组分别投喂在基础饲料中添加0.50、0.75和1.00 g/kg GML的试验饲料.试验期130 d.结果表明:1)与对照组相比,0.50和0.75 g/kg GML组的体长和形体比显著提高(P＜0.05),饲料系数和肥满度显著降低(P＜0.05).2)与对照组相比,0.75 g/kg GML组的肠道胰蛋白酶活性显著提高(P＜0.05),0.50、0.75和1.00 g/kg GML组的肠道脂肪酶活性显著提高(P＜0.05).3)与对照组相比,0.50和0.75 g/kg GML组的血清碱性磷酸酶和超氧化物歧化酶活性显著提高(P＜0.05);0.50、0.75和1.00 g/kg GML组的血清溶菌酶含量显著提高(P＜0.05),血清丙二醛含量显著降低(P＜0.05).4)与对照组相比,0.50、0.75和1.00 g/kg GML组的肌肉饱和脂肪酸含量显著降低(P＜0.05),肌肉多不饱和脂肪酸含量显著提高(P＜0.05),肌肉谷氨酸、赖氨酸、组氨酸和总风味氨基酸含量显著提高(P＜0.05).由此可见,饲料中添加0.50和0.75 g/kg GML对大口黑鲈的生长性能、肌肉营养品质及肠道健康均有明显的促进作用,表明GML作为功能性饲料添加剂具有良好的应用前景.

Abstract

The purpose of this experiment was to investigate the effects of glycerol monolaurate(GML)on growth performance,muscle nutritional quality and intestinal health of Micropterus salmoides.A total of 1 200 juvenile Micropterus salmoides with body weight of(37.81±1.12)g were randomly divided into 4 groups with 3 replicates per group and 100 fish per replicate.The control group was fed a basal diet,and the experimental groups were fed the basal diets supplemented with 0.50,0.75 and 1.00 g/kg GML,respectively.The experi-ment lasted for 130 days.The results showed as follows:1)compared with the control group,the body length and shape ratio of 0.50 and 0.75 g/kg GML groups were significantly increased(P＜0.05),and the feed coef-ficient and condition factor were significantly decreased(P＜0.05).2)Compared with the control group,the intestinal trypsin activity of 0.75 g/kg GML group was significantly increased(P＜0.05),and the intestinal li-pase activity of 0.50,0.75 and 1.00 g/kg GML groups were significantly increased(P＜0.05).3)Compared with the control group,the serum alkaline phosphatase and superoxide dismutase activities of 0.50 and 0.75 g/kg GML groups were significantly increased(P＜0.05);the serum lysozyme content of 0.50,0.75 and 1.00 g/kg GML groups was significantly increased(P＜0.05),and the serum malondialdehyde content was significantly decreased(P＜0.05).3)Compared with the control group,the muscle saturated fatty acid content of 0.50,0.75 and 1.00 g/kg GML groups was significantly decreased(P＜0.05),muscle polyunsatu-rated fatty acid content was significantly increased(P＜0.05),and the muscle glutamate,lysine,histidine and total flavor amino acid contents were significantly increased(P＜0.05).In conclusion,the addition of 0.50 and 0.75 g/kg GML in diet can promote the growth performance,muscle nutritional quality and intestinal health of Micropterus salmoides,which indicate that GML has a good application prospect as a functional feed additive.[Chinese Journal of Animal Nutrition,2024,36(6):3892-3902]

关键词

月桂酸单甘油酯/大口黑鲈/生长性能/营养品质/肠道健康

Key words

glycerol monolaurate/Micropterus salmoides/growth performance/nutritional quality/intestinal health

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基金项目

浙江大学-恒泽领雁合作项目子课题(2022C02040)

出版年

2024

动物营养学报

中国畜牧兽医学会

动物营养学报

CSTPCD北大核心

影响因子：1.297

ISSN：1006-267X

参考文献量33

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