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本试验测定了加州鲈(体重20～25g)在水温18℃和28℃时的基础代谢、常规代谢及活动代谢。代谢测定分4组进行 :(1)水族箱外包铝箔 ,在无光条件下测定随意活动的基础代谢 ;(2)在无光条件下 ,将鱼分别置于塑料圆筒内限制活动 ,测定基础代谢 ;(3)在有光不给食条件下 ,测定自由活动的常规代谢 ;(4)在有光给食条件下 ,测定活动代谢。另设空白对照。水温在18℃时无光随意活动下测得的标准代谢率为101.87mgO2/kg h ,标准代谢能为1.51kJ/kg h。活动时的代谢率比标准率高出近一倍。经过T检验 ,无光限制活动与随意活动的代谢率差异不显著(P>0.05) ;给食时的活动代谢率显著地高于不给食的(P<0.01)。水温28℃时测得值比较结果与此相同。水温28℃时的标准代谢、常规代谢和活动代谢均比18℃时相应的代谢率提高近1倍。作者建议 ,在每日能量估算时 ,用无光随意活动时的代谢能作为标准代谢能的估算值 ,将更接近实际值。
This experiment measured the basal metabolism, routine metabolism and active metabolism of California bass (body weight 20 ~ 25g) at water temperature of 18 ℃ and 28 ℃. Metabolic assays were carried out in 4 groups: (1) aquarium outsourcing aluminum foil, in the absence of light to determine the basal metabolism of free activity; (2) in the absence of light conditions, the fish were placed in a plastic cylinder to limit activity, determination of the basis Metabolism; (3) Determination of free-living conventional metabolism in the absence of light; (4) Determination of active metabolism in light-fed conditions. Another set of blank control. The standard metabolic rate was 101.87mgO2 / kg h when the water temperature was 18 ℃, and the standard metabolic energy was 1.51kJ / kg h. Active metabolic rate than the standard rate nearly doubled. After T test, there was no significant difference in metabolic rate between light-limited activity and voluntary activity (P> 0.05). The metabolic rate of activity at feeding was significantly higher than that of non-fed (P <0.01). Measured at a water temperature of 28 ° C, the same results are obtained. When the water temperature was 28 ℃, the standard metabolism, the normal metabolism and the activity metabolism all increased about 1 time compared with the corresponding metabolic rate at 18 ℃. The authors suggest that at daily energy estimations, the metabolic energy at light daily activity can be used as an estimate of the standard metabolic energy closer to the actual value.