饲料中添加核苷酸对草鱼生长性能、体成分及血清生化指标的影响

王红权, 李瑞, 金柏涛, 赵玉蓉

doi:10.3969/j.issn.1006-267x.2019.06.035

动物营养学报 >

2019 , Vol. 31 >Issue 6: 2745 - 2751

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.06.035

水产营养 Aquaculture Nutrition

饲料中添加核苷酸对草鱼生长性能、体成分及血清生化指标的影响

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1. 湖南农业大学动物科学技术学院, 长沙 410128;
2. 水产高效健康生产湖南省协同创新中心, 常德 415000;
3. 常德大北农饲料有限公司, 常德 415000

王红权(1971-),男,湖南湘阴人,教授,博士,主要从事水生动物健康养殖研究。E-mail:285922624@qq.com

收稿日期: 2018-12-11

网络出版日期: 2019-06-17

基金资助

国家自然科学基金面上项目（31470132）

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Effects of Dietary Nucleotides on Growth Performance, Body Composition and Serum Biochemical Parameters of Grass Carp (Ctenopharyngodon idella)

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Hunan Collaborative Innovation Center for Efficient and Healthy Production of Aquatic Products, Changde 415000, China;
3. Changde Dabei Agricultural Feed Company Limited, Changde 415000, China

Received date: 2018-12-11

Online published: 2019-06-17

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摘要

本试验旨在研究饲料中添加核苷酸对草鱼生长性能、体成分及血清生化指标的影响。选取初始体重为（10.79±0.25）g的健康草鱼720尾，随机分为6个组，每组4个重复，每个重复30尾鱼。各组分别饲喂在基础饲料中添加0（对照）、0.015%、0.030%、0.060%、0.120%和0.180%核苷酸的饲料。试验期60 d。结果表明：1）饲料中添加核苷酸对草鱼的增重率、特定生长率、饲料系数以及体成分均无显著影响（P>0.05）。2）与对照组相比，饲料中添加核苷酸显著降低了草鱼血清丙二醛（MDA）含量（P<0.05），显著增加了草鱼血清总超氧化物歧化酶（T-SOD）、过氧化氢酶（CAT）、溶菌酶（LSZ）活性及补体3（C3）含量（P<0.05）。由此可见，饲料中添加核苷酸对草鱼生长性能和体成分无显著影响，可提高草鱼的抗氧化能力和非特异性免疫能力。通过回归分析得出，当饲料核苷酸添加水平在0.082%~0.150%时，草鱼的抗氧化能力和非特异性免疫能力较佳。

关键词： 核苷酸; 草鱼; 生长性能; 血清生化指标

本文引用格式

王红权, 李瑞, 金柏涛, 赵玉蓉 . 饲料中添加核苷酸对草鱼生长性能、体成分及血清生化指标的影响[J]. 动物营养学报, 2019 , 31(6) : 2745 -2751 . DOI: 10.3969/j.issn.1006-267x.2019.06.035

Abstract

This experiment was conducted to investigate the effects of dietary nucleotides on growth performance, body composition and serum biochemical parameters of grass carp (Ctenopharyngodon idellus). A total of 720 healthy grass carp with initial body weight of (10.79±0.25) g were randomly divided into 6 groups with 4 replicates in each group and 30 fish in each replicate. Fish in each group were the basal diet supplemented with 0 (control), 0.015%, 0.030%, 0.060%, 0.120% and 0.180% nucleotides, respectively. The experiment lasted for 60 days. The results showed as follows:1) dietary nucleotides had no significant effects on weight gain rate, specific growth rate, feed conversion ratio and body composition of grass carp (P>0.05). 2) Compared with the control group, dietary nucleotides significantly decreased the serum malondialdehyde (MDA) content of grass carp (P<0.05), and significantly increased the total superoxide dismutase (T-SOD), catalase (CAT), lysozyme (LSZ) activities and complement 3 (C3) content in serum of grass carp (P<0.05). These results indicate that dietary nucleotides have no significant effects on growth performance and body composition of grass carp, and can improve the antioxidant capacity and non-specific immunity capacity of grass carp. According to the regression analysis, when dietary nucleotides supplemental level is 0.082% to 0.150%, the antioxidant capacity and non-specific immunity capacity of grass carp are better.

Key words： nucleotides; grass carp; growth performance; serum biochemical parameters

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