| 刘凯,段金荣,徐东坡,张敏莹,施炜纲.2009.长江下游产卵期凤鲚、刀鲚和湖鲚肌肉生化成分及能量密度.动物学杂志,44(4):118-124. |
| 长江下游产卵期凤鲚、刀鲚和湖鲚肌肉生化成分及能量密度 |
| Biochemical Components and Energy Density in Muscles of Coilia mystus,C. ectenes and C. ectenes taihuensis in Spawning Season in the Lower Reaches of Yangtze River |
| 投稿时间：2009-01-13 修订日期：2009-04-28 |
| DOI： |
| 中文关键词: 长江下游 鲚属 产卵期 生化成分 能量密度 |
| 英文关键词:The lower reaches of Yangtze River Genus Coilia Spawning season Biochemical component Energy density |
| 基金项目:中央级公益性科研院所基本科研业务专项项目(No.2009JBFB06,2009JBFB07,2009JBFB08);国家科技基础条件平台项目(No.2007DKA30470) |
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| 中文摘要: |
| 为研究产卵期凤鲚(Coilia mystus)、刀鲚(C.ectenes)和湖鲚(C.ectenes taihuensis)肌肉生化成分与能量密度,评价其营养价值并探讨生态习性差异对鱼类肌肉生化成分的影响。采集卵巢发育至Ⅴ期的样本各50尾,分别测定相关指标,实验均设置3个重复,结果取平均值。3个种群样本肌肉水分含量为74.62%～81.87%,粗蛋白占肌肉鲜重的比例为15.06%～18.08%,粗脂肪为1.65%～6.78%,粗灰分为0.98%～1.49%,能量密度为4.447～7.209kJ/g。必需氨基酸指数为70.49～76.04,不饱和脂肪酸与ω-3多不饱和脂肪酸含量分别为62.50%～72.48%与6.54%～8.39%。肌肉中矿物元素含量最高的均为钾,最低的均为铜。结果表明,凤鲚、刀鲚和湖鲚均为理想蛋白源,不饱和脂肪酸及矿物元素含量丰富,同时还富含赖氨酸、支链氨基酸、EPA和DHA等生理必需因子。生化成分对比分析结果显示,刀鲚粗脂肪含量和能量密度显著高于凤鲚和湖鲚,这种差异直接反映了洄游习性对鱼类肌肉生化成分的影响。 |
| 英文摘要: |
| The objective was to measure biochemical components and energy density in muscles of Coilia mystus,C.ectenes and C.ectenes taihuensis in spawning season.At the same time the nutritive quality was evaluated and the influence on biochemical components of different ecological habits was also explored.In this experiment,fifty female samples with ovary in stage Ⅴ of each population were collected from Changxing Island(Shanghai,China),Xuliujing-Tiehuangsha(Changshu,China),and Wuli Lake(Wuxi,China) respectively in 2008 from May to July,and correlative indexes of each population were tested with average results of three duplicates.The results showed that the contents of moisture were 74.62%-81.87%,crude protein 15.06%-18.08%,crude fat 1.65%-6.78% and ash 0.98%-1.49% based on fresh muscles,and the energy density showed 4.447-7.209 kJ/g.The essential amino acid indexes were 70.49-76.04.Contents of unsaturated fatty acid were 62.50%-72.48%,of which ω-3 polyunsaturated fatty acid accounted for 6.54%-8.39%.Among mineral elements contents K showed the highest value while Cu showed the lowest.The results indicated that three populations of the genus Coilia all were ideal protein sources,which contained plenty of poly-unsaturated fatty acid,mineral elements,and some other essential factors,such as lysine,branched-chain amino acid,EPA and DHA.By means of comparative analysis on biochemical components,it could be found that crude fat and energy density of C.ectenes were significantly higher than those of C.mystus and C.ectenes taihuensis,the remarkable difference indicated that the energy reservior for reproductive migration might come from the fat accumulation,which also showed the significant influence of migration behavior on biochemical components. |
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