| 短期饥饿对奥尼罗非鱼幼鱼生长和几种消化酶的影响 |
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| 引用本文： | 王辉,强俊,李瑞伟,彭俊.短期饥饿对奥尼罗非鱼幼鱼生长和几种消化酶的影响[J].广东海洋大学学报,2010,30(1):7-12. |
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| 作者姓名： | 王辉 强俊 李瑞伟 彭俊 |
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| 作者单位： | 1. 广东海洋大学水产学院,广东,湛江,524025
2. 广东茂名三高罗非鱼良种基地,广东,茂名,525024 |
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| 基金项目： | 国家科技支撑计划，广东省教育部产学研结合项目 |
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| 摘 要： | 研究在(27.0±1)℃条件下,奥尼罗非鱼(Oreochromis niloticus×O.aureus)幼鱼初始体重为(2.49±0.31)g]短暂饥饿处理后再投喂的补偿生长。结果显示:在恢复生长时期,饥饿3、6、9和12d处理组的特定增长率和摄食率显著高于对照组(P<0.05);各处理组的饲料转化率与对照组差异不显著(P>0.05);胃蛋白酶、胰蛋白酶和脂肪酶的活力变化趋势相同,均随先饥饿再饱食的顺序先下降后上升,而淀粉酶活力变化趋势不明显;恢复投喂后,各组奥尼罗非鱼幼鱼的消化酶活性均恢复到对照组水平。表明饥饿3d组的奥尼罗非鱼幼鱼在恢复生长中具有超补偿能力,饥饿6d组幼鱼具有完全补偿能力,饥饿9和12d组幼鱼具有部分补偿能力。奥尼罗非鱼幼鱼短暂饥饿后出现的补偿生长效应主要通过增加食欲、提高摄食率实现。
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| 关 键 词： | 奥尼罗非鱼 幼鱼 饥饿 补偿生长 消化酶 |
Effects of Short Period Starvation on Growth and Some Digestive Enzymes in Hybrid Tilapia Juveniles |
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| WANG Hui,QIANG Jun,LI Rui-wei,PENG Jun.Effects of Short Period Starvation on Growth and Some Digestive Enzymes in Hybrid Tilapia Juveniles[J].Journal of Zhanjiang Ocean University,2010,30(1):7-12. |
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| Authors: | WANG Hui QIANG Jun LI Rui-wei PENG Jun |
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| Institution: | WANG Hui1,QIANG Jun1,LI Rui-wei2,PENG Jun1 (1.Fisheries college of Guangdong Ocean University,Zhanjiang 524025,China,2.Guangdong Maoming Sangao Tilapia Breeding Farm,Maoming 525024,China) |
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| Abstract: | The compensatory growth was observed by refeeding hybrid tilapia(Oreochromis niloticus × O.aureus)juveniles with mean initial body weight (2.49±0.31) g,after a short period of starvation,at (27.0 ± 1) ℃.The results showed that over the period of growth recovery,the specific growth rates and feeding rates for those groups starved for 3,6,9 and 12 d respectively were significantly higher than those of control group (P < 0.05);there was no significant difference between the feed conversion rates of test groups and that of control (P > 0.05);trends of activities of pepsin,tryptase and lipase were the same,initially decreasing and then increasing from starvation to satiation and the change in amylase activity was not striking;after recovering the feed,and the activities of digestive enzyme for test groups were increased,grossly identical to that of the control.It indicated that the subject starved for 3d was of over-compensatory capability across the growth recovery;those juveniles that were starved for 6d were of full compensatory ability,whereas those starved for 9 and 12 d had only partial compensation for growth.The compensatory growth occurring after short-term starvation for hybrid tilapia juveniles mainly resulted from hyperphagia and increase of feeding rate. |
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| Keywords: | hybrid tilapia(Oreochromis niloticus×O aureus) juvenile starvation compensatory growth digestive enzyme |
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