水生生物学报2016，Vol.40Issue(4)：655-662,8.DOI:10.7541/2016.88
饲料脂肪水平对芙蓉鲤鲫幼鱼血清生化指标、免疫反应及抗氧化能力的影响
EFFECT OF DIETARY LIPID LEVELS ON SERUM BIOCHEMICAL INDICES, IMMUNE RESPONSES AND ANTIOXIDANT CAPABILITY OF JUVENILE FURONG CRUCIAN CARP (FURONG CARP♀× RED CRUCIAN CARP♂)
摘要
Abstract
To investigate effects of dietary lipids on serum biochemical indices, immunity, and antioxidant capability of juvenile Furong crucian carp (Furong carp♀× red crucian carp♂) [mean initial body weight, (2.04±0.01) g], five isonitrogenous experimental diets were formulated with increasing lipid levels (2.50%, 4.39%, 6.61%, 8.42%and 10.81%lipid) using fish oil as the lipid source to feed triplicate groups of fish for 60 days. The results showed that with the increase of dietary lipid level, weight gain rate (WGR) and protein efficiency ratio (PER) significantly increased and then decreased, and the maximum of WGR and PER were found in the 6.61%lipid group (P<0.05). The feed conver-sion ratio (FCR) showed the opposite trend. Dietary lipids significantly increased serum total cholesterol (CHO) and globulin (GLB) contents, but significantly decreased total protein (TP) and albumin (ALB) content (P<0.05). Dietary lipids have no effect in high density lipoprotein cholesterol (HDL-C) and triglyceride (TG) content (P>0.05). The im-munoglobulin M (Ig M) content, serum superoxide dismutase (SOD), hepatic SOD activity and total antioxidant capa-city (T-AOC) significantly increased and then decreased with increasing dietary lipid levels (P<0.05). The maximum of serum catalase (CAT) activity was found in the 10.81%lipid group, which are significantly higher than other groups (P<0.05). There were no significant difference in hepatic CAT activity and malondialdehyde (MDA) content among dietary treatments (P>0.05). These results suggest that proper die-tary lipid level can improve the health of Furong crucian carp, but excess dietary lipid may exert adverse effects. Based on the second-order regression analysis of WGR, the optimal dietary lipid level in juvenile furong crucian carp was 6.94%.关键词
芙蓉鲤鲫/饲料脂肪水平/生化指标/免疫/抗氧化Key words
Furong crucian carp (Furong carp♀×red crucian carp♂)/Dietary lipid levels/Biochemistry indices/Immune function/Antioxidant capability分类
农业科技引用本文复制引用
何志刚,王金龙,伍远安,李传武,李绍明,刘文革..饲料脂肪水平对芙蓉鲤鲫幼鱼血清生化指标、免疫反应及抗氧化能力的影响[J].水生生物学报,2016,40(4):655-662,8.基金项目
国家大宗淡水鱼类产业技术体系项目(CARS-46-41) （CARS-46-41）
中央财政农业科技推广专项资金(2011,2013)资助[Supported by the Earmarked Fund for China Agriculture Research System (CARS-46-41) （2011,2013）
the Special Central Finance Funds for the Technology Extension of Agricultural (2011,2013)] （2011,2013）
