摘要
在２５℃不同日粮水平（饥饿─４％体重／ｄ）条件下，采用封闭式呼吸仪测定了３１尾鲇鱼（体重７２．９─１３３．３ｇ）的日总代谢率，然后，将鱼限制在呼吸室中的限动笼内测定了其中２０尾鲇鱼的静止日总代谢率，并计算出了鲇鱼的特殊动力作用（ＳＤＡ）和活动代谢率。日总代谢率和活动代谢率都随日粮水平的升高呈“Ｖ”形变化，分别在约１％和２％体重／ｄ的日粮水平时最低，ＳＤＡ的能量支出占摄入能量的２２．１４％。
The daily total metabolic rates were determined for 31 fish with closed respirometers. In addition, resting daily total metabolic rates were determined for 20fish by confining the fish into a cage within the respirometer. The fish weighed 72.9-133.3g and were fed different ration levels from starvation to 4% bw / day at 25℃. The specific dynamic action and activity metabolism changed with ration level in the form of a 'V' shaped curve, with the lowest values at ration levels of about 1% and 2% bw/day,respectively. The energy expenditure of specific dynamic action was 22. 14% of food energy.
出处
《水生生物学报》
CAS
CSCD
北大核心
1996年第4期333-339,共7页
Acta Hydrobiologica Sinica
关键词
鲇鱼
日总代谢
特殊动力作用
活动代谢
日粮水平
Silurus asotus, Daily total metabolism, Specific dynamic action, Activity metabolism, Ration level
