| 饥饿和补偿生长对史氏鲟幼鱼摄食、生长和体成分的影响 |
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| 引用本文： | 高露姣.饥饿和补偿生长对史氏鲟幼鱼摄食、生长和体成分的影响[J].水产学报,2004,28(3):279-284. |
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| 作者姓名： | 高露姣 |
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| 作者单位： | 1. 华东师范大学生命科学学院,上海,200062;中国水产科学研究院东海水产研究所水产养殖生物学与种质资源实验室,上海,200090
2. 华东师范大学生命科学学院,上海,200062 |
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| 基金项目： | 教育部"跨世纪优秀人才培养计划"基金和高等学校骨干教师资助计划项目部分资助 |
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| 摘 要： | 报道了饥饿和再投喂对史氏鲟幼鱼摄食、生长以及生化组成的影响.22±2℃条件下,随着饥饿时间延长,幼鱼白肌的RNA/DNA比值不断减小,体重逐渐下降,后者与同期对照组之间存在极显著性差异(P<0.01).饥饿7d,鱼的肝糖原和肌糖原含量显著降低(P<0.05),但随着饥饿时间的延长,肝糖原和肌糖原含量则出现不同程度的回升;脂肪含量和蛋白质含量分别在饥饿14d和21d时下降幅度最大,提示史氏鲟幼鱼动用储存物质的顺序依次是糖原、脂肪和蛋白质.而饥饿过程中鱼体水分和灰分含量则有所上升.恢复投食后,饥饿幼鱼的摄食强度增大,生长加快,其中7d、14d饥饿组幼鱼的RNA/DNA比值达到或接近正常投喂组水平,但21d饥饿组的比值仍明显低于正常投喂组(P<0.05).恢复投食30d后,7d和14d饥饿组幼鱼体重接近对照组(P>0.05),21d饥饿组的终体重未能赶上对照组(P<0.05),这表明史氏鲟幼鱼的补偿生长随饥饿时间不同而异.试验结束时,各处理组鱼体生化组成与正常投喂组没有显著差异(P>0.05).
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| 关 键 词： | 史氏鲟 幼鱼 饥饿 再投喂 生长 生化组成 RNA／DNA比值 |
| 文章编号： | 1000-0615(2004)03-0279-06 |
| 收稿时间： | 2014/3/15 0:00:00 |
| 修稿时间： | 2003年11月7日 |
Effect of starvation and compensatory growth on feeding,growth and body biochemical composition in Acipenser schrenckii juveniles |
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| GAO Lu-Jiao.Effect of starvation and compensatory growth on feeding,growth and body biochemical composition in Acipenser schrenckii juveniles[J].Journal of Fisheries of China,2004,28(3):279-284. |
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| Authors: | GAO Lu-Jiao |
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| Affiliation: | College of Life Sciences, East China Normal University, Shanghai200062, China |
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| Abstract: | The effect of starvation for different time and re..feeding on growth, feeding and body biochemical
composition of Amur sturgeon juveniles( Acipenser schrenckii ) were investigated indoor under 22 .. 2 .. . The body
weight and ratio of RNA/ DNA of f ish decreased with the increasing of starvation period. After being deprived of
food for 7 days, 14 days or 21 days, body weight was signif icantly lower than that of fed fish ( P < 0. 01) . At the
same time, protein, lipid and glycogen content of fish were lower, while ash and moisture content became higher of
the starved group than that of the control. The liver glycogen and muscle glycogen content reduced mainly in the
f irst week, and lipid and protein content reduced obviously in second and third week of food deprivat ion
respectively . The results indicated that sturgeon juveniles mobilize energy f rom glycogen, lipid and protein in turn. Upon re..feeding, all the starved groups exhibited higher feed intake rates and specif ic growth rates than that of the
control group. The ratio of RNA/ DNA of f ish deprived of food for 7 and 14 days reached or approximated to that of
the control, while the ratio of RNA/ DNA of the testing f ish starved for 21 days was lower significantly compared to
the control ( P < 0. 05) . After re..feeding for 30 days, there were no significant differences in body biochemical
composition among four groups ( P > 0. 05) . The f ish deprived of food for 7 and 14 days were able to catch up with
the control in body weight , while the fish weight of starving 21 days less than the control ( P < 0. 05) . It suggested
that both complete and partial compensation is contributed somewhat by improvement feeding rate in Amur sturgeon. |
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| Keywords: | Acipenser schrenckii juveniles starvation re-feeding growth biochemical composition RNA/DNA ratio |
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