| 摘要: |
| 生物体的含能量及比能值(Q,指单位体重的含能量)是能量学研究的重要参数,蛋白质、脂肪和碳水化合物是生物体含能量的主要物质载体。在鱼体中,碳水化合物的含量约占0.5%,在鱼类能量学研究中一般忽略不计,生化组分决定鱼体的能量含量。在自然界中，鱼体的生化组成是变化的(Craig,1977),精确估计鱼体的含能量及生化组成是建立鱼类能量收支方程的必要条件,但同时也是深入开展能量学研究的主要困难之一。研究者发现,在各种条件下,鱼体各组分之间都有比较恒定的比例关系( Elliott,1976; Weatherly et al,1983),因此提出,如果以鱼体某个易于测定的指标(如含水量、体重等)作为自变量,建立起与含能量及化学组成较显著的相关关系,则可较方便地对有关指标进行间接估计。
1994年8-11月,作者在对黑鲷(Sparus macrocephalus B.,)进行能量学研究的同时,对其比能值及化学组成亦进行了测定,探讨了日粮水平(RI)对鱼体比能值及生化组成的影响,建立了干物质含量和比能值的预测模式以及含水量与比能值、蛋白质含量、脂肪含量的回归关系,以便对实验鱼类的比能值及化学组成进行间接估计。 |
| 关键词: 黑鲷幼鱼、比能值、生化组成 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第2889号
本课题为国家自然科学基金资助项目，37370542号 |
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| STUDY ON ENERGY CONTENT AND BIOCHEMICAL COMPOSITION OF THE YOUNG BLACK PORGY |
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Li Jun
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Institute of Oceanology,Chinese Academy of Sciences
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| Abstract: |
| Feeding-growth experiments on young black porgy (Sparus macrocephalus B.) weighing 4.19-70.16g, were carried out in four ration levels. Measurement of the carcasses'water, energy, protein and lipid content showed that the energy content, protein and lipid content were positively correlated with ration levels but that water content was negatively correlated with ration levels. The linear relationship between energy, protein or lipid content and water content was discussed. The coefficients of the regressions relating energy and lipid content to water content were so high that the water content was used as a index to estimate indirectly the energy content and biochemical composition Models relating dry matter content and energy content to ration level Body weight and mean water temperature were obtained using stepwise regression. |
| Key words: ENERGY CONTENT,BIOCHEMICAL COMPOSITION,YOUNG BLACK PORGY |
