上海海洋大学学报2026，Vol.35Issue(1)：72-83,12.DOI:10.12024/jsou.20241004658
无鱼粉饲料中添加Ala-Gln对施氏鲟幼鱼生长和能量代谢的影响
Effects of Ala-Gln supplementation in soybean protein isolate feed on juvenile Amur sturgeon(Acipenser schrenckii)
摘要
Abstract
This study was conducted to investigate the effects of different gradients of Ala-Gln added to fishmeal-free diets on the growth performance,amino acid metabolism and energy budget of juvenile Acipenser schrenckii.In this study,450 juvenile sturgeon with initial body weight of(21.66±1.02)g were raised in a recirculating water culture facility and randomly divided into 5 groups(3 replicates per group with 30 fish per replicate).The control group was fed a basal diet,while the experimental groups were fed diets supplemented with 0,0.25％,0.50％,0.75％,and 1.00％Ala-Gln,respectively.The experiment lasted for 56 days.The results were as follows:(1)The final weight and condition factor of sturgeon were significantly higher in the groups receiving 0.50％-1.00％Ala-Gln compared to the control group(P＜0.05).Weight gain rate,feed efficiency,dry matter intake,crude protein,and crude lipid content increased with Ala-Gln supplementation,though these increases did not reach statistical significance(P＞0.05).(2)Fecal energy(F),excretion energy(U),showed no significant differences(P＞0.05),but growth energy(G)and metabolizable energy(R)were significantly different from the control group(P＜0.05).(3)The cysteine content of fish supplemented with 0.75％Ala-Gln was significantly higher than that of other groups(P＜0.05).The glycine content of fish supplemented with 0.50％Ala-Gln was significantly higher than that of other groups(P＜0.05).The glycine content of fish supplemented with 0.50％Ala-Gln was significantly higher than that of other groups(P＜0.05).(4)Glutamine and alanine levels in the blood were significantly increased 5 hours after ingestion(P＜0.05).After 0.25％-1.00％Ala-Gln supplementation,glutamine was the most important amino acid affecting the blood metabolic profile.The addition of 0.50％Ala-Gln resulted in significantly higher aspartic acid levels compared to other groups(P＜0.05).Analysis of PLA,a key component of aspartic acid,indicated that glutamine was the most important amino acid influencing the blood metabolic profile.The results indicate that exogenous supplementation of 0.75％to 1.00％Ala-Gln can significantly improve the growth performance of juvenile sturgeon,likely due to increased absorption of Ala-Gln,which elevates the levels of glutamine and alanine in the body,thereby affecting metabolism and promoting protein synthesis.关键词
无鱼粉/施氏鲟/Ala-Gln/生长/氨基酸代谢/能量收支Key words
fishmeal-free diets/Amur sturgeon/Ala-Gln/growth/amino acid metabolism/energy budget分类
农业科技引用本文复制引用
刘烊廷,王常安,郭忠宝,王晗雅,王佳豪,陆绍霞,韩世成,刘红柏..无鱼粉饲料中添加Ala-Gln对施氏鲟幼鱼生长和能量代谢的影响[J].上海海洋大学学报,2026,35(1):72-83,12.基金项目
现代农业产业技术体系(特色淡水鱼)(CARS-46) （特色淡水鱼）
中央级公益性科研机构基本业务费项目(HSY202202M) （HSY202202M）
中国水产科学研究院基本科研业务费项目(2023TD60,2023TD96) （2023TD60,2023TD96）
黑龙江省自然科学基金(LH2023C057) （LH2023C057）
中国博士后基金(2022MD713817) （2022MD713817）
