| 杨贵强,徐绍刚,王跃智,张永旺.2009.溪红点鲑的特殊动力作用.动物学杂志,44(3):16-22. |
| 溪红点鲑的特殊动力作用 |
| Specific Dynamic Action of Salvelinus fontinalus |
| 投稿时间：2008-12-18 修订日期：2009-03-02 |
| DOI： |
| 中文关键词: 溪红点鲑 特殊动力作用 饱食 空腹 |
| 英文关键词:Brook Trout(Salvelinus fontinalus) Specific dynamic action Satiation Starvation |
| 基金项目:北京市科技攻关项目(No.Z080005032508019) |
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| 中文摘要: |
| 在水温(14.5±0.5)℃条件下,测定了平均体重(26.5±2.0)g(n=260)溪红点鲑(Salvelinusfontinalus)饱食和空腹状态下的耗氧率及排氨率。实验组共测定了260尾个体,空腹状态下标准耗氧率和标准排氨率分别为(175.00±8.49)mg/kg.h及(2.91±0.40)mg/kg.h;饱食后耗氧率和排氨率变化趋势均呈现迅速上升,到达最大值后再缓慢下降,然后恢复到初始水平,最大值分别为(375.93±9.73)mg/kg.h和(16.01±0.37)mg/kg.h,最大值出现时间分别为饱食后(6.0±0.3)h和(7.0±0.5)h,饱食后耗氧率和排氨率发生改变的持续时间分别为(23.0±1.5)h及(23.0±2.0)h,耗氧总增量和排氨总增量分别为(2641±137)mg及(164±10)mg。结果显示,溪红点鲑饱食排氨率的变化过程与其饱食耗氧率的特殊动力作用(SDA)具有类似的特征,表明二者在能量代谢机制上相互关联,溪红点鲑的SDA总耗能的18.8%±1.2%由蛋白质分解代谢所提供。 |
| 英文摘要: |
| At 14.5±0.5℃,the oxygen consumption and ammonia excretion rate of the Brook Trout(Salvelinus fontinalus)(mean body weight 26.5±2.0 g,n=260)were measured in satiation and starvation stage.The results indicated that the standard oxygen consumption and ammonia excretion rate were 175.00±8.49 mg/kg·h and 2.91±0.40 mg/kg·h respectively.The postprandial changing patterns in oxygen consumption and ammonia excretion were similar:after feeding,both rates increased drastically,and reached their maximum levels(375.93±9.73 mg/kg·h and 16.01±0.37 mg/kg·h,n=130)in a short time(6.0±0.3 h and 7.0±0.5 h,n=130),then decreased slowly towards their standard levels.The duration for the postprandial changes were 23.0±1.5 h and 23.0±2.0 h,the increased magnitude of oxygen consumption and ammonia excretion were respectively 2 641±137 mg and 164±10 mg compared with the standards.This study suggests that the response in the rate of ammonia excretion in satiation should be closely related to that in the oxygen consumption,and 18.8%±1.2% of energy expenditure for the specific dynamic action(SDA)of the brook trout in postprandial metabolism might be due to protein catabolism. |
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