水生生物学报2017，Vol.41Issue(5)：1010-1019,10.DOI:10.7541/2017.126
亚麻油替代鱼油对杂交鲟生长、脂肪酸组成及脂肪代谢的影响
GROWTH PERFORMANCE, FATTY ACID COMPOSITION, AND LIPID METABOLISM IN JUVENILE HYBRID STURGEON (ACIPENSER SCHRENCKII BRANDT♀×A. BAERI BRANDT♂) FED DIETS OF FISH OIL SUBSTITUTED BY VARIOUS LEVELS OF LINSEED OIL
摘要
Abstract
A 12-week experiment was performed using juvenile hybrid sturgeon (70.8±0.5) g to study the effects of par-tial and total replacement of fish oil (FO) by linseed oil (LO). Five isonitrogenous (38.7％ crude protein) and isoener-getic (10.0％ crude lipid) experimental diets were formulated as follows: LO0 (100％ FO); LO25 (75％FO+25％ LO);LO50 (50％ FO+50％LO); LO75 (25％FO+75％LO); and LO100 (100％LO). These diets were fed to triplicate groups of 40 hybrid sturgeon three times a day to apparent satiation at (22±1.0)℃. There were no significant differences in fi-nal body weight, weight gain rate (WGR), and specific growth rate (SGR) in all fish groups (P>0.05). Fish fed diets with LO0, LO25, and LO50 had significantly higher feed intake than fish fed diets with LO75 and LO100 (P<0.05). Fish fed diets with LO100 had significantly higher feed efficiency than fish fed a diet with LO0 (P<0.05). Fillet and liver lipid content, and serum lactate dehydrogenase (LDH), glutamic-oxalacetic transaminase (ALT) and glutamic-pyruvic transaminase (AST) activity showed an increasing trend as linseed oil increased (P<0.05). The linolenic acid (C18:3n3) content, the sum of n-3 and n-6, and the n-3:n-6 ratio in fillets showed a positive linear correlation with the diets. Lipid metabolism throughout the day for sturgeon on different levels of linseed oil replacement showed that the lipid source and time point, and the interaction of both of these factors had significant effects on serum non-esterified fatty acid (NEFA), triglyceride (TG), High-density lipoprotein cholesterol (HDL-Chol), and low-density lipoprotein cholesterol (LDL-Chol) (P<0.05). Serum total cholesterol and ketone bodies were not affected by the lipid source, time point, or in-teraction of both factors (P>0.05).关键词
杂交鲟/鱼油替代/亚麻油/生长性能/餐后脂肪代谢Key words
Hybrid sturgeon (Acipenser schrenckii Brandt♀×A. baeri Brandt♂)/Fish oil replacement/Linsee d oil/Growth performances/Postprandial lipid metabolite分类
农业科技引用本文复制引用
罗琳,邢薇,李铁梁,刘洋,马志宏,姜娜,李文通..亚麻油替代鱼油对杂交鲟生长、脂肪酸组成及脂肪代谢的影响[J].水生生物学报,2017,41(5):1010-1019,10.基金项目
北京市鲟鱼、鲑鳟创新团队(SCGWZJ 20161103-2)资助 Supported by Beijing Technology System for Sturgeon and Salmonids Industries (SCGWZJ 20161103-2) （SCGWZJ 20161103-2）
