| 摘要: |
| 根据对鮻(Liza haematocheila)进行21 d 的室内模拟实验所得数据, 分析了两种饵料条件(饵料1:高营养价饵料; 饵料2: 低营养价饵料)饲育下鮻的碳循环过程。结果表明: 鮻摄食高营养价饵料后的碳消化率显著低于摄食低营养价饵料。摄入碳量受饵料种类影响, 与饵料营养价值成反比。碳摄入量中用于生长的部分(以比例衡量)不受饵料种类影响, 通过非粪便途径流失量远远高于粪便途径, 约为后者的8~10 倍。转运碳(y)与体质量(x)之间成线性关系为: y=723.13x?62.124(饵料1)与y=718.99x+832.32(饵料2)。鮻的碳收支方程式为100 摄入碳=13.03 生长碳+13.08 粪便碳+73.89 非粪便流失碳(饵料1)和100 摄入碳=12.70 生长碳+8.18 粪便碳+79.12 非粪便流失碳(饵料2)。
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| 关键词: 鮻(Liza haematocheila) 碳收支 饵料 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(No. 40206001) |
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| Carbon budgets of redlip mullet (Liza haematocheila) fed on two diets |
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KANG Bin,XIAN Wei-wei,WU Yun-fei
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| Abstract: |
| The carbon budget of redlip mullet (Liza haematocheila) was studied based on the data from a 21 d laboratory experiment. The apparent carbon digestibility coefficient of redlip mullet fed on high nutrition diet was lower than that of fish fed on low nutrition diet. The amount of carbon allocated into growth was not influenced by diet type, and the carbon loss in non-faecal pathway was 8～10 times higher than the loss in faecal pathway. The relationship between scavenging carbon (y) and fish body weight (x) was y = 723.13x – 62.124 (fed on high nutrition diet) or y = 718.99x + 832.326 (fed on low nutrition diet). The carbon budget of redlip mullet was 100 intaken = 13.03 retention + 13.08 faeces + 73.89 excretion (fed on high nutrition diet) or 100 intaken = 12.70 retention + 8.18 faeces + 79.12 excretion (fed on low nutrition diet).
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| Key words: Liza haematocheila carbon budget diet |
