水生生物学报2024，Vol.48Issue(9)：1509-1518,10.DOI:10.7541/2024.2024.0115
饲料添加谷氨酸对草鱼生长、抗氧化能力和肌肉品质性状的影响
DIETARY SUPPLEMENTATION WITH GLUTAMATE ON GROWTH,ANTIOXI-DANT CAPACITY,AND MUSCLE QUALITY OF GRASS CARP(CTENOPHARYNGODON IDELLA)
摘要
Abstract
The experiment utilized grass carp(Ctenopharyngodon idella)as the research object to investigate the effects of dietary glutamate on growth performance,muscle quality,and plasma antioxidant capacity.Three groups of isoni-trogenous and isolipidemic experimental diets were prepared:the control diet(Con)and the control diet supplemented with 0.8%and 1.6%L-glutamic acid(0.8%GLU group and 1.6%GLU group,respectively).540 grass carp with an initial body weight of(37.0±0.2)g were divided into three treatments and fed with experimental feed respectively.Each treatment consisted of three repeated cages,with each cage containing 60 fish.The experiment spanned 85 days.The results showed that the growth performance of grass carp fed with glutamic acid was not significantly different from that of the control group.However,compared with the control group,the dorsal muscle gap of grass carp in 1.6%Glu group decreased,and the muscle fiber density increased significantly(P＜0.05).Moreover,the hardness,chewiness,adhesion,cohesion,and recovery of grass carp dorsal muscle in the 0.8%Glu group and 1.6%Glu group were signifi-cantly increased compared to the control group,while muscle elasticity in the 0.8%HYP group was significantly increased(P＜0.05).Additionally,the plasma total cholesterol content of grass carp fed with glutamic acid was signifi-cantly decreased(P＜0.05).The activities of alkaline phosphatase(AKP)and glutamic oxaloacetic transaminase got(GOT)in plasma of grass carp in the 1.6%Glu group increased significantly(P＜0.05),while the activity of glutamic pyruvic transaminase(GPT)in plasma decreased significantly(P＜0.05).Furthermore,the plasma superoxide dismu-tase(SOD)activity and total antioxidant capacity(T-AOC)of grass carp in the 0.8%Glu group and 1.6%Glu group were significantly increased(P＜0.05).In conclusion,the addition of glutamic acid in feed can enhance the muscle qua-lity of grass carp and improve the antioxidant capacity of grass carp plasma.关键词
谷氨酸/肌肉品质/抗氧化能力/草鱼Key words
Glutamate/Flesh quality/Antioxidant capacity/Ctenopharyngodon idella分类
农业科技引用本文复制引用
杨婉愉,解绶启,巫丽云,张月星,韩冬,张志敏,刘昊昆,金俊琰,杨云霞,朱晓鸣..饲料添加谷氨酸对草鱼生长、抗氧化能力和肌肉品质性状的影响[J].水生生物学报,2024,48(9):1509-1518,10.基金项目
国家自然科学基金(U21A20266和31972771)资助[Supported by the National Natural Science Foundation of China(U21A20266 and 31972771)] （U21A20266和31972771）
