动物营养学报2018，Vol.30Issue(3)：1007-1018,12.DOI:10.3969/j.issn.1006-267x.2018.03.025
橡胶籽油替代鱼油对吉富罗非鱼幼鱼生长性能、消化酶活性、脂蛋白含量和抗氧化功能的影响
Effects of Fish Oil Replacement by Rubber Seed Oil on Growth Performance, Digestive Enzyme Activity, Lipoprotein Content and Antioxidant Capacity of Juvenile Genetically Improved Farmed Tilapia (Oreochromis niloticus)
摘要
Abstract
This study was conducted to evaluate the effects of fish oil replacement by rubber seed oil on growth performance,digestive enzyme activity,lipoprotein content and antioxidant capacity of juvenile genetically improved fanned tilapia (GIFT) (Oreochromis niloticus).A total of 600 healthy juvenile GIFT with similar body weight were randomly divided into 5 groups with 3 replicates per group and 40 fish per replicate,and fed with their respective diet from the five isonitrogenous and isolipids diets,in which 0 (G0,as control),25％ (G25),50％ (G50),75％ (G75) and 100％ (G100) fish oil were replaced with rubber seed oil in a basal diet.The experiment lasted for 8 weeks.The results showed as follows:1) there was no significant difference in final body weight,weight gain,daily gain coefficient,feeding rate,feed conversion rate and protein efficiency ratio of juvenile GIFT among all groups (P＞0.05).2) The activities of trypsin and lipase in intestine of juvenile GIFT in group G25 were significantly higher than those in the other groups (P＜0.05),the intestinal amylase activity of juvenile GIFT in group G25 was significantly higher than that in group G75 (P＜0.05).There was no significant difference in activities of trypsin,amylase and disaccharidase in liver of juvenile GIFT among all groups (P＞0.05).3) With the percentage of oil replacement by rubber seed oil increasing,the contents of total cholesterol (TC) and low density lipoprotein cholesterin (LDL-C) in serum of juvenile GIFT general showed a downward trend,and the liver free cholesterol (FC) content and FC/TC was firstly decreased and then increased,which group G25 got the lowest.4) The plasma glutathione reductase (GR) activity of juvenile GIFT in group G0 was significantly higher than that in the other groups (P＜0.05),the liver GR activity of juvenile GIFT in group G0 was significantly higher than that in groups G50 and G100 (P＜0.05),and the liver total antioxidant capacity of juvenile GIFT in group G100 was significantly lower than that in the other groups (P＜0.05).In summary,replacing 25％ to 75％ fish oil with rubber seed oil has no obvious negative effects on growth performance,and antioxidant capacity.25％ fish oil replacement by rubber seed oil is beneficial to improve the intestinal digestive enzyme activity of juvenile GIFT;when 100％ fish oil replacement by rubber seed oil,the antioxidant capacity of juvenile GIFT is decreased.关键词
吉富罗非鱼/橡胶籽油/鱼油/生长性能/消化酶活性/抗氧化功能Key words
GIFT (Oreochromis niloticus)/rubber seed oil/fish oil/growth performance/digestive enzyme activity/antioxidant capacity分类
农业科技引用本文复制引用
张新党,张曦,陶琳丽,杨秀娟,毕保良,邓君明..橡胶籽油替代鱼油对吉富罗非鱼幼鱼生长性能、消化酶活性、脂蛋白含量和抗氧化功能的影响[J].动物营养学报,2018,30(3):1007-1018,12.基金项目
云南农业大学杰出人才专项(2015JY04) （2015JY04）
云南省淡水渔业产业技术体系专项(2017KJT0019) （2017KJT0019）
云南省应用基础研究面上项目(2014FB143) （2014FB143）
云南省科技创新强省计划(2014AB003) （2014AB003）
