大西洋三文鱼（Salmo salar）和虹鳟鱼（Oncorhynchus mykiss）在不同鱼油和菜籽油含量的两种日粮中EPA和DHA利用率的比较

IF 1.3 Q3 FISHERIES

Journal of Applied Aquaculture Pub Date : 2021-08-08 DOI:10.1080/10454438.2021.1955804

G. Berge, Å. Krogdahl, Marie Hillestad, H. Holm, J. Holm, B. Ruyter

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引用次数: 0

摘要

摘要：初始体重为460–468 g的大西洋鲑鱼和虹鳟鱼被喂食两种高鱼油（FO）或菜籽油（RO）含量的日粮。比较了鱼类代谢和沉积脂质和n-3脂肪酸的能力。两个物种的生长速率、FCR和脂肪消化率相似。虹鳟比三文鱼表现出更高的条件因子、更低的出彩率和肝体细胞指数。喂食FO日粮的两个物种的EPA和DHA的全身含量均高于RO日粮，但表明虹鳟鱼产生DHA的能力高于鲑鱼。RO组虹鳟肝脏中的总脂肪含量低于三文鱼，DHA含量高于三文鱼，这表明虹鳟增加DHA代谢的能力更强。

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Comparison of EPA and DHA utilization in Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) fed two diets with different content of fish oil and rapeseed oil

ABSTRACT Atlantic salmon and rainbow trout with initial weights of 460–468 g were fed two diets either high in fish oil (FO) or rapeseed oil (RO) content. The abilities of the fish to metabolize and deposit lipid and n-3 fatty acids were compared. Growth rates, FCR, and fat digestibility were similar in both species. Rainbow trout showed higher condition factors and lower dress-out percentage and hepatosomatic index than salmon. Whole-body content of EPA and DHA were higher in both species fed the FO diet than in the RO diet, but indicated higher capacities to produce DHA in rainbow trout than in salmon. The total fat content in the RO group was lower and DHA higher in rainbow trout liver than in salmon, indicating a greater ability of rainbow trout to increase metabolism to DHA.

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来源期刊

Journal of Applied Aquaculture Environmental Science-Ecology

CiteScore

3.20

自引率

0.00%

发文量

期刊介绍： The Journal of Applied Aquaculture is a platform for the sharing of practical information needed by researchers to meet the needs of investors, farm managers, extension agents and policy makers working to adapt aquaculture theory to achieve economic and food security objectives in the real world. The journal emphasizes multi-disciplinary research and case studies that propose financially and logistically viable solutions to observable problems.