不同脂肪源对异育银鲫的生长、体组成和肌肉脂肪酸的影响
DIETARY LIPID SOURCES FOR GIBEL CARP CARASSIUS AURATUS GIBELIO: GROWTH PERFORMANCE, TISSUE COMPOSITION AND MUSCLE FATTY ACID PROFILES
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文摘
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配制了十种等氮等能的饲料饲喂3.53 g的异育银鲫幼鱼12周, 探讨异育银鲫对不同脂肪源的利用效果。十种饲料中分别添加8%的鱼油(FO)、椰子油(CNO)、玉米油(CO)、亚麻油(LO)、大豆油(SO)、菜籽油(RO)、1∶1鱼油-椰子油(FCNO)、1∶1鱼油-玉米油(FCO)、1∶1鱼油-亚麻油(FLO)和1∶1∶1∶1鱼油-椰子油-玉米油-亚麻油混合油(MIX)。每组饲料三个平行, 每个平行30尾。实验在循环水养殖系统中进行, 水温控制在(24±1)℃。结果表明, 在单一脂肪源中, 豆油组和椰子油组的增重率最高, 其次是菜籽油组, 鱼油、玉米油和亚麻油组的增重率最低。与相应的单一脂肪源相比, 饲料中鱼油与椰子油、玉米油或亚麻油1∶1混合后使用提高了异育银鲫的生长。摄食不同脂肪源饲料的异育银鲫血清生化指标、各组织的水分和脂肪含量差异不明显(P>0.05)。肌肉脂肪酸与饲料脂肪源呈明显正相关。摄食豆油和菜籽油饲料的鱼体肌肉中20:4n-6较高, 而摄食亚麻油饲料的鱼则含有较高的20:5n-3和22:6n-3, 表明异育银鲫具有转化18:2n-6和 18:3n-3为高不饱和脂肪酸的能力。从实验可以看出, 豆油、椰子油和菜籽油是异育银鲫饲料中良好的脂肪源。 |
其他语种文摘
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A 12-week growth trial was conducted with juvenile gibel carp (Carassius auratus gibelio) to evaluate their ability by utilize different dietary lipids. Ten diets were supplemented with 8% of either fish oil (FO), coconut oil (CNO), corn oil (CO), linseed oil (LO), soybean oil (SO), rapeseed oil (RO), 1∶1 fish oil-coconut oil (FCNO), 1∶1 fish oil-corn oil (FCO), 1∶1 fish oil-linseed oil (FLO) or 1∶1∶1∶1 fish-coconut-corn-linseed oil mixture (MIX). Each diet was fed to triplicate groups of fish (initial weight: 3.53 g, 30 ini.) in a recirculation system at (24±1)℃.Weight gain were the highest in SO and CNO group, followed RO and the lowest in FO, CO and LO group, when used as a single lipid source. Compared to total replacement of fish oil, coconut oil, corn oil or linseed oil substitute 50% fish oil led to a higher weight gain, respectively. Neither the plasma biochemistry nor the lipid and moisture contents in different tissues of gibel carp showed significant difference between groups (P>0.05). Fatty acid composition of muscle in fish generally reflected the composition of the diet. Fish fed CO and SO had higher 20:4n-6, while relative higher 20:5n-3 and 22:6n-3 was detected in fish fed LO. These results suggested that gibel carp had ability to desaturate and elongate 18:2n-6 and 18:3n-3 to highly unsaturated fatty acid. In conclusion, soybean oil, coconut oil and rapeseed oil were good alternative lipid sources for gibel carp. |
来源
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水生生物学报
,2011,35(6):988-997 【核心库】
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关键词
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异育银鲫
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脂肪源
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生长
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肌肉脂肪酸
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地址
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中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 430072
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-3207 |
学科
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水产、渔业 |
基金
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国家973计划
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国家现代农业产业技术体系建设专项资金项目
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国家公益性行业(农业)科研专项
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文献收藏号
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CSCD:4378921
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