水生生物学报2018，Vol.42Issue(1)：123-130,8.DOI:10.7541/2018.016
两种油脂水平下DHA添加对鲤生长及脂质代谢的影响
EFFECT OF DHA ON THE GROWTH PERFORMANCE AND LIPID METABOLISM IN TWO DIETARY LIPID LEVELS OF COMMON CARP, CYPRINUS CARPIO L.
摘要
Abstract
In order to evaluate the effect of DHA on the growth and lipid metabolism of common carp (Cyprinus car-pio L.), using casein, dextrin, cellulose, soybean oil and fish compound premix as the raw feed two diets with lipid level of 6％ and 12％ were prepared for Cyprinus carpio L. 3％ soybean oil in the two diets was replaced by 50％ DHA to produce four diets, which included 6L group, 6L-DHA group, 12L group and 12L-DHA group. A total of 360 common carps (14.81±0.13 g) were randomly divided into four groups (triplicate per group), and fed with four diets, respecti-vely, for 74 days. After then, growth performance, biological parameters, body composition, serum biochemical indica-tors and tissue morphological were determined. The results showed that compared with 6L group, the feed efficiency, absolute growth rate and relative growth rate decreased significantly in 6L-DHA group (P<0.05). The absolute growth rate was significantly lower in 12L-DHA group than that of 12L group (P<0.05). The intraperiotenal fat index and adipocyte area of intraperiotenal fat tissue were significantly lower in 6L-DHA group than that in 6L group (P<0.05). The crude lipid content in the muscle decreased significantly in DHA diet (P<0.05). However, the content of serum total cholesterol increased significantly in DHA diet. Results showed that the growth and health status of common carp were compromised by adding DHA in lipid diets, which was probably caused by the high level of DHA in diet and it would be avoided by increasing dietary lipid level.关键词
鲤/DHA(Docosahexaenoicacid)/油脂水平/生长/脂质代谢/高不饱和脂肪酸Key words
Common carp/DHA (Docosahexaenoic acid)/Lipid level/Growth performance/Lipid metabolism/Highly unsaturated fatty acid分类
农业科技引用本文复制引用
周继术,曹艳姿,吉红,于海波..两种油脂水平下DHA添加对鲤生长及脂质代谢的影响[J].水生生物学报,2018,42(1):123-130,8.基金项目
国家自然科学基金(30771667)资助 [Supported by the National Natural Science Foundation of China (30771667)] （30771667）
