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当前位置: 首页 > 文章 > 壳聚糖投喂方式对草鱼抗饥饿胁迫能力的影响 水产学报 2010,34 (3) 134-140
Position: Home > Articles > Effects of feeding modes of chitosan on prevention of starvation of Ctenopharyngodon idellus Journal of Fisheries of China 2010,34 (3) 134-140

壳聚糖投喂方式对草鱼抗饥饿胁迫能力的影响

作  者：
韩加凤;华雪铭;黄旭雄;王军;于宁;周洪琪
单  位：
上海海洋大学省部共建水产种质资源发掘与利用教育部重点开放实验室
关键词：
草鱼;壳聚糖;投喂方式;生长;NO含量;溶菌酶活性
摘  要：
在基础饲料中添加0.5%的壳聚糖,采用3种不同的投喂方式(方式A:连续投喂基础饲料,对照组;方式B:连续投喂添加0.5%壳聚糖的饲料,连续组;方式C:先投喂0.5%壳聚糖饲料再投喂基础饲料且每15天间隔投喂,不连续组)饲喂初始体重(19.46±0.04)g的草鱼60d后,对草鱼进行饥饿胁迫处理[各投喂方式分为投喂组(feeding,F)和饥饿组(starvation,S)],以生长、一氧化氮(nitrogenoxide,NO)含量和溶菌酶(lysozyme,LSZ)活性为指标考察壳聚糖不同投喂方式对草鱼抗饥饿胁迫处理的能力。结果显示,(1)连续组和不连续组60d时草鱼增长率和增重率显著高于对照组(P<0.05),15d饥饿处理后也呈现投喂组和饥饿组的增长率和增重率高于对照组的趋势(P>0.05);(2)对照组头肾、肝胰脏NO含量和血清、头肾溶菌酶活性饥饿组显著高于投喂组(P<0.05),连续组除头肾外NO含量和各组织溶菌酶活性饥饿组显著低于投喂组(P<0.05)或与投喂组无显著差异(P>0.05),不连续组除脾脏外NO含量和除肝胰脏外的溶菌酶活性饥饿组显著低于投喂组(P<0.05)或与投喂组无显著差异(P>0.05)。显然,饥饿对不同组织的影响不同,不同处理对草鱼抗应激能力的影响也不同。相比较而言,连续组和不连续组比对照组有更高的抗饥饿胁迫能力,但两组之间无显著差异(P>0.05)。结合经济性与实用性来考虑,建议采用不连续投喂的方式给予草鱼壳聚糖,以提高其生长性能和抗饥饿胁迫的能力。
译  名：
Effects of feeding modes of chitosan on prevention of starvation of Ctenopharyngodon idellus
作  者：
HAN Jia-feng,HUA Xue-ming,HUANG Xu-xiong,WANG Jun,YU Ning,ZHOU Hong-qi (Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources,Ministry of Education, Shanghai Ocean University,Shanghai 201306,China)
关键词：
grass carp(Ctenopharyngodon idellus); chitosan; feeding modes; growth index; nitrogen oxide(NO) content; LSZ activity
摘  要：
Grass carp(mean body weight 19.46±0.04 g) were first fed for 60 days by three modes(mode A,grass carp were fed basal diet without chitosan; mode B,grass carp were fed experimental diet,supplemented with 0.5% chitosan in basal diet; mode C,grass carp were first fed experimental diet and then basal diet at an interval of 15 days) and then starved for 15 days. Growth index,nitrogen oxide(NO) content and lysozyme(LSZ) activity in head-kidney(HK),spleen,hepatopancreas and serum were measured to investigate effects of feeding modes of chitosan on prevention of starvation of grass carp. The results showed that length gain and weight gain of grass carp at the end of 60 days feeding were significantly higher in modes B and C than those of the control(P<0.05) and were the similar variation(P>0.05) after 15 days starvation,regardless of feeding or starvation. NO content,in HK and hepatopancreas,and LSZ activity,in HK and serum,were significantly higher in starvation treat in mode A. On the contrary,NO content ,except in HK,and LSZ activity or NO content,except in spleen,and LSZ activity,except in hepatopancreas,were significantly lower(P<0.05) in starvation treat or had no statistical significance(P>0.05) between starvation and feeding treats in modes B and C.Obviously,starvation caused various influence in different tissues and effects caused by different oral administration treats were dissimilar on prevention of starvation of grass carp. Comparatively,modes B and C had an effective resistance to starvation stress,but there was no statistical significance in both of them. Given economical efficiency and practicability,chitosan by incontinuous feeding will be suggested to promote growth and lighten the stress caused by starvation.

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