| 饥饿及恢复投喂对刺参生长、耗氧率和排氨率的影响 |
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| 作者姓名： | 高鹏程 周朝生 吴洪喜 胡利华 |
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| 作者单位： | [1]上海海洋大学水产与生命学院,201306 [2]浙江省海洋水产养殖研究所,温州325005 [3]浙江省近岸水域生物资源开发与保护实验室,温州325005 |
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| 基金项目： | 浙江省近岸水域生物资源开发与保护重点实验室人才培养基金（2012F20020）和浙江省重大科技专项（优先主题）（2008C02009-Ⅰ）共同资助 |
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| 摘 要： | 在水温(16±1)℃、盐度27.6±0.5、pH值7.5~8.3条件下,将体重为(28.47±2.02)g的刺参Apostichopus japonicus分别饥饿0(空白对照)、5、10、15和20d(分别记为T0、T5、T10、T15和T20)后再饱食投喂至40d。实验结果表明,随着饥饿时间的延长,刺参的耗氧率呈急速下降、上升、再下降的变化规律;排氨率呈先上升、后下降的变化规律;氧氮比呈先下降、后上升的变化规律。饥饿结束时刺参的体重,除T5组外,其余各组均显著小于T0组(P0.05),且各自均有不同程度的下降,耗氧率和排氨率与T0组比较均呈显著性差异(P0.05)。饥饿对刺参O/N比值的影响显著(P0.05),饥饿初期刺参O/N比值平均为10左右,随着饥饿时间的延长,刺参O/N比值降为小于7。实验结束时,各饥饿组刺参的体重和特定生长率均小于T0组(P0.05),除T5组外,各组的耗氧率和排氨率,均未能恢复至T0组水平(P0.05)。可见,饥饿后恢复投喂的刺参不具有补偿生长的特征。
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| 关 键 词： | 刺参 饥饿 投喂 耗氧率 排氨率 |
| 收稿时间： | 2012/11/23 0:00:00 |
| 修稿时间： | 2013/1/11 0:00:00 |
Effects of starvation on growth,oxygen consumption and ammonia excretion rate of sea cucumber Apostichopus japonicus |
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| Authors: | GAO Peng-cheng ＇ ZHOU Chao-sheng ＇ WU Hong-xi ＇ HU Li-hua |
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| Institution: | 1 College of Fisheries and Life Science,Shanghai Ocean University, 201306) (2 Zhejiang Mariculture Research Institute, Wenzhou 325005) (a Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource, Wenzhou 325005) |
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| Abstract: | The effects of starvation and re-feeding on the growth, oxygen consumption rate and ammonia excretion rate of Apostichopus japonicus were studied at （16 ± 1）℃, salinity 27.6±0.5 andpH 7.5-8.3. Sea cucumbers at body weightof （28.47±2.02）gwerestarved for 5 d（TS）, 10 d（T10）, 15 d（T15）, and 20 d（T20）, and then were re-fed until the 40th day. Re- sults showed that with the extension of the starvation period, the oxygen consumption of A. japonicus displayed three stages of variation ＂sharp decrease, increase and decrease. Ammonia excretion rate increased at first and then decreased. The ratio of the animals of oxygen to nitrogen showed a decreasing-increasing trend. The weight of the animals of each starving treatment （except TS） was significantly lower than the control （P〈0.05） and decreased at the end of starvation. The oxygen consumption rate and ammonia excretion rate of the animals of starving treatments （except TS） were significantly different from the control （P〈0.05） . Starvation had a significant impact on the ratio of O/N （P〈0.05）. The O/N ratio of of the animals star- ving treatments was about 10 at the beginning of the starvation period. As the starvation time prolonged, the O/N ratio of the animals became less than 7. At the end of the experiment, the weight and specific growth rate of each treatment were significantly lower than the control（P〈 0.05） ,while their oxygen consumption rate and ammonia excretion rate （except TS） were also lower than the control （P〈0.05）. This indicated that A. japonicus had no compensatory growth with re-feeding after starvation. |
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| Keywords: | Apostichopus japonicus Starvation Feeding Oxygen consumption rate Ammonia excretion rate |
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