锦鲤幼鱼循环饥饿后的补偿生长和体成分变化

›› 2017, Vol. 39 ›› Issue (6): 463-468.

锦鲤幼鱼循环饥饿后的补偿生长和体成分变化

杨志强¹,李潇轩²,许郑超²

1. 江苏省淡水水产研究所
2.

收稿日期:2017-10-16 修回日期:2017-10-31 出版日期:2017-12-25 发布日期:2018-01-02
通讯作者: 杨志强
基金资助:
2017年江苏省级水产三新工程“优质锦鲤引种及繁育”

Compensatory growth and biochemical composition after experiencing cycles of feed deprivation and re-feeding in juvenile brocarded carp

Received:2017-10-16 Revised:2017-10-31 Online:2017-12-25 Published:2018-01-02

摘要/Abstract

摘要： 为研究体长（10.63±0.20）cm 、体重（17.63 ±0.72）g 锦鲤（Cryprinus carpiod）幼鱼循环饥饿后的补偿生长和体成分变化，试验设5个组，分别为正常投喂和4个循环饥饿投喂组，其中循环饥饿投喂组投喂方式分别为：饥饿1 d后投喂3 d、饥饿1 d后投喂5 d、饥饿2 d后投喂3 d、饥饿2 d后投喂5 d，试验水温为（27.0±1.0）°C ，试验周期为40 d。试验結果表明：循环饥饿1 后投喂的特定生长率、摄食率均显著高于正常投喂的（P <0.05），但末均长、末均重、总摄食量、相对增重率和饲料利用率的差异均不显著（P > 0.05），表现为完全补偿生长，推测其补偿生长应是通过提高摄食率来实现的；循环饥饿2 d后投喂的末均长、末均重、总摄食量、特定生长率、相对增重率均显著低于正常投喂的（P<0.05），而摄食率、饲料利用率的差异均不显著（P>0.05），表现为不能补偿生长，但是否对其生理机能造成伤害有待于进一步研究确定；4个循环饥饿投喂组的鱼体粗蛋白和粗脂肪含量较正常投喂组有所降低，而水分和灰分含量有所升高。因此，循环饥饿1 d后投喂3 d的实际投喂时间较短，且为完全补偿生长，是最佳的循环饥饿投喂模式。

关键词: 锦鲤幼鱼, 循环饥饿, 补偿生长, 体成分, juvenile brocarded carp, cyclic starvation, compensatory growth, body composition

Abstract: A 40-days feeding trial was conducted to determine compensatory growth and biochemical parameters after experiencing cycles of starvation and re - feeding in juvenile brocarded carp [body length (10.63±0.20 ) cm， body weight (17.63±0.72 ) g ] reared at (27.0 ±1.0)℃. Four feeding regime groups were designed as follows : starved 1 d ，then fed 3 d; starved 1 d，then fed 5 d ; starved 2 d，then fed 3 d and starved 2 d，then fed 5 d，while one control group fed daily. The results showed that the specific growth rate and feeding rate of 1 day of starvation followed by feeding groups were significantly higher than control group(P<0.05)，while the difference of final average length，final average weight，total food ration，weight gain rate and feed efficiency were not significant (P>0.05)，showing a completely compensatory growth，and it is presumed that compensatory growth should be achieved by increasing the feeding rate. The final average length，final average weight，total food ration，specific growth rate and weight gain rate of 2 days of starvation followed by feeding groups were significantly lower than control group (P<0.05)，while the difference of feeding rate and feed efficiency were not significant ( P>0.05)，showing a non - compensatory growth，and whether the damage to its physiological function needed to be further studied and determined. Compared with control group，the body protein and lipid of four feeding regime groups were metabolized and replaced by moisture and ash. Based upon the effect of compensation and actual days of feed intake，the cyclic feeding regime of starved 1 d，then fed 3 d could be recommended for the brocarded carp rearing under the present experimental conditions.

杨志强李潇轩许郑超. 锦鲤幼鱼循环饥饿后的补偿生长和体成分变化[J]. , 2017, 39(6): 463-468.