研究简报 Short Communications

饲料中添加小肽对星斑川鲽幼鱼生长性能、体组成及血清生化指标的影响

  • 姜柯君 ,
  • 王际英 ,
  • 张利民 ,
  • 柳旭东 ,
  • 张德瑞 ,
  • 孙永智
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  • 1. 上海海洋大学水产与生命学院,上海 201306;
    2. 山东省海洋水产研究所,烟台 264006

收稿日期: 2012-07-12

  网络出版日期: 2013-01-04

基金资助

国家海洋公益性行业科研专项(201205025);山东省水生动物营养与饲料泰山学者岗位经费资助(HYK201004);山东省科技发展计划项目(2010GZX20506);山东省财政支持农业重大应用技术创新课题(2009-2012)

Effects of Small Peptides Supplementation on Growth Performance, Body Composition and Serum Biochemical Indices of Juvenile Starry Flounder (Platichthys stellatus)

  • JIANG Kejun ,
  • WANG Jiying ,
  • ZHANG Limin ,
  • LIU Xudong ,
  • ZHANG Derui ,
  • SUN Yongzhi
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  • 1. College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;
    2. Marine Fisheries Research Institute of Shandong Province, Yantai 264006, China

Received date: 2012-07-12

  Online published: 2013-01-04

摘要

本试验旨在研究饲料中添加小肽对星斑川鲽幼鱼生长性能、体组成及血清生化指标的影响。选取平均体重为(15.30±0.03) g的星斑川鲽幼鱼540尾,随机分为6组,分别投喂添加0(对照组)、0.25%、0.50%、0.75%、1.00%和1.50%小肽的试验饲料。每组3个重复,每个重复30尾鱼,试验期为8周。结果表明:1)0.75%和1.00%添加组的增重率、摄食率、特定生长率和蛋白质效率均显著高于对照组(P<0.05);各添加组的饲料系数均显著低于对照组(P<0.05)。2)全鱼粗蛋白质、粗脂肪、水分和灰分含量各组之间无显著差异(P>0.05)。随小肽添加量的提高,背肌的粗脂肪含量先下降后上升,除0.25%添加组外的其他各添加组均显著低于对照组(P<0.05);1.00%和1.50%添加组的背肌粗蛋白质含量显著高于对照组(P<0.05);背肌水分和灰分含量各组之间无显著差异(P>0.05)。3)0.50%添加组的血清总胆固醇含量显著低于对照组(P<0.05);各添加组的血清甘油三酯含量显著低于对照组(P<0.05);1.00%添加组的血清总蛋白和球蛋白含量显著高于对照组(P<0.05);血清白蛋白含量各组之间差异不显著(P>0.05);各添加组的血清溶菌酶活性均显著高于对照组(P<0.05),以1.00%添加组为最高;1.00%添加组的血清过氧化氢酶活性显著高于对照组(P<0.05),血清丙二醛含量则显著低于对照组(P<0.05)。由此得出,饲料中添加适量的小肽可有效提高星斑川鲽幼鱼的生长性能,促进脂肪代谢,增强机体免疫及抗氧化能力。本试验条件下,0.93%~1.00%为小肽的适宜添加量。

本文引用格式

姜柯君 , 王际英 , 张利民 , 柳旭东 , 张德瑞 , 孙永智 . 饲料中添加小肽对星斑川鲽幼鱼生长性能、体组成及血清生化指标的影响[J]. 动物营养学报, 2013 , 25(1) : 222 -230 . DOI: 10.3969/j.issn.1006-267x.2013.01.028

Abstract

This experiment was conducted to investigate the effects of small peptides supplementation on growth performance, body composition and serum biochemical indices of juvenile starry flounder (Platichthys stellatus). Five hundred and forty starry flounder with an average body weight of (15.30?0.03) g were randomly divided into 6 groups with 3 replicates per group and 30 fish per replicate. The fish in those 6 groups were fed experimental diets supplemented with 0 (control group), 0.25%, 0.50%, 0.75%, 1.00% and 1.50% small peptides, respectively. The experiment lasted for 8 weeks. The results showed as follows: 1) the weight gain rate (WGR), feed intake rate (FIR), specific growth rate (SGR) and protein efficiency ratio (PER) in 0.75% and 1.00% groups were significantly higher than those in control group (P<0.05), while the feed conversion ratio in control group was significantly higher than that in other groups (P<0.05). 2) No significant differences were found in crude protein, crude lipid, moisture and ash contents of whole body among all groups (P>0.05). In dorsal muscle, the crude lipid content was decreased first and then increased with small peptides supplementation increasing, and all supplemental groups except 0.25% group were significantly lower than control group (P<0.05); the crude protein content in 1.00% and 1.50% groups was significantly higher than that in control group (P<0.05); no significant differences were found in moisture and ash contents among all groups (P>0.05). 3) Compared with the control group, serum total cholesterol (TCHO) content in 0.50% group was significantly decreased (P<0.05); serum triacyglycerol (TG) content in all supplemental groups was significantly decreased (P<0.05); serum total protein (TP) and globulin (GLB) contents in 1.00% group were significantly increased (P<0.05);no significant difference was found in serum albumin (ALB)content among all groups (P>0.05). Serum lysozyme (LSZ) activity was significantly improved by dietary small peptides supplementation (P<0.05), and the highest value appeared in fish fed with 1.00% small peptides. Compared with the control group, serum catalase (CAT) activity was significantly increased (P<0.05) and serum maleic dialdehyde (MDA) content was significantly decreased (P<0.05) in 1.00% group. According to the above results, it is concluded that small peptides can effectively improve growth performance, lipid metabolism, immune and antioxidant capacity of juvenile starry flounder, and the optimum dietary small peptides supplemental level is 0.93% to 1.00% under this experimental condition

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