中文摘要：

为了探讨有氧运动训练和摄食对中华倒刺鲃（Spinibarbus sinensis）幼鱼力竭运动后代谢特征的影响,在（25±0.5）℃条件下,将120尾实验鱼[体重（21.35±0.05）g,体长（10.21±0.03）cm]随机分成4组,即：对照组、1、2和4 BL/s（体长/秒,body length/s）训练组,分别放置于不同流速下处理8周。随后测定各实验组心脏和鳃指数以及禁食或摄食（轻度麻醉灌喂体重1.5%的饵料）状态下的力竭运动后过量耗氧。结果发现：4 BL/s训练组的心脏和鳃指数都显著高于其他实验组（P〈0.05）;无论摄食与否,3个训练组运动前代谢率都显著高于对照组（P=0.001）,而各实验组过量耗氧均没有显著差异;在禁食状态下,仅4 BL/s训练组的运动代谢峰值和代谢率增量显著高于对照组,而在摄食状态下,3个训练组的运动代谢峰值和代谢率增量均显著高于对照组（P〈0.005）。与禁食组相比,摄食导致各处理组的运动前代谢率显著上升（P〈0.001）,但对运动代谢峰值没有显著影响;另外,摄食对照组代谢率增量和力竭运动后过量耗氧显著低于禁食对照组（P〈0.05）。研究表明：（1）有氧运动训练显著提高了中华倒刺鲃幼鱼的有氧代谢能力,这可能与其呼吸和循环系统功能的改善有关;（2）力竭运动能够诱导出中华倒刺鲃幼鱼的最大有氧代谢率;（3）摄食削弱了中华倒刺鲃幼鱼无氧代谢能力。

英文摘要：

To investigate the effects of aerobic exercise and feeding on excess post-exercise oxygen consumption（EPOC） in juvenile qingbo（Spinibarbus sinensis）, 120 fish [（21.35±0.05） g,（10.21±0.03） cm] were exercised at 25℃under four water velocities, i.e., nearly still water（control）, 1 body length（BL）/s, 2 BL/s and 4 BL/s for eight weeks to measure the heart index, gill index and EPOC. The results showed that the heart and gill indexes significantly increased in 4 BL/s training group compared to those in other three groups（P〈0.05）. Aerobic exercise resulted in a significant increase in the pre-exercise metabolic rate under both feeding and fasting status（P=0.001）. There were no differences in the EPOC magnitude of S. sinensis between the exercise groups and control group under both feeding and fasting status. Peak post-exercise metabolic rate and increment of metabolic rate were significantly higher in the 4 BL/s training group than those of the control group under fasting status. Peak post-exercise metabolic rates and increment of metabolic rates were significantly higher in the three exercise groups than those of the control group under feeding status（P〈0.005）. Feeding resulted in a significantly higher pre-exercise metabolic rate compared to fasting fish under the same water velocity（P〈0.001）. Peak post-exercise metabolic rate is similar between the feeding and fasting treatment groups with the same water velocity. Feeding led to a significant decrease in the increment of metabolic rate and EPOC magnitude in the control group（P〈0.05）. Our results suggest that aerobic exercise significantly increased aerobic capacity, which may be related to the improvement of respiratory and circulatory system function, and that exhaustive exercise can induce maximum oxygen consumption rate, and that feeding reduced the anaerobic capacity in juvenile S. sinensis.