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当前位置: 首页 > 文章 > 日本沼虾对饲料赖氨酸的需要量研究 上海海洋大学学报 2013,22 (1) 100-104
Position: Home > Articles > Studies on dietary lysine requirement of Macrobrachium nipponense Journal of Shanghai Ocean University 2013,22 (1) 100-104

日本沼虾对饲料赖氨酸的需要量研究

作  者：
孙丽慧;沈斌乾;陈建明;潘茜;郭建林
单  位：
浙江省淡水水产研究所
关键词：
日本沼虾;饲料;赖氨酸;需要量;虾体增重
摘  要：
在10%酪蛋白和5%明胶提供全蛋白氨基酸的基础上,用晶体氨基酸赖氨酸调节7个饲料赖氨酸水平(0.85%～2.95%),并以晶体天冬氨酸和谷氨酸(1∶1)补偿调节百分比;其它饲料氨基酸分别用晶体氨基酸调节到40%的日本沼虾肌肉蛋白中各氨基酸含量的水平,配制7种精制试验饲料,喂养初始体重为0.13 g的幼日本沼虾7周。结果表明,用不同试验饲料喂养日本沼虾7周后,虾的存活率组间无显著差异(P>0.05)。饲料赖氨酸水平对虾体增重有显著影响(P<0.05)。虾体增重随饲料赖氨酸上升到1.90%不断增大,但超过此值后不再有显著变化。摄食饲料赖氨酸水平为1.55%～2.60%的试验组的饲料效率显著高于摄食饲料赖氨酸水平为0.85%的试验组。以虾体增重为指标,经折线模型回归分析,得出日本沼虾对赖氨酸的需求量为:占干饲料的1.91%,占饲料蛋白的5.41%。并以此为基准,以肌肉必需氨基酸组成比为参考,估算了其它各必需氨基酸的需要量分别为:精氨酸1.83%、组氨酸0.52%、异亮氨酸1.13%、亮氨酸1.80%、蛋氨酸0.66%、苯丙氨酸0.99%、苏氨酸0.81%、色氨酸0.27%、缬氨酸1.11%。
译  名：
Studies on dietary lysine requirement of Macrobrachium nipponense
作  者：
SUN Li-hui,SHEN Bin-qian,CHEN Jian-ming,PAN Qian,GUO Jian-lin(Zhejiang Institute of Freshwater Fisheries,Huzhou 313001,Zhejiang,China)
关键词：
Macrobrachium nipponense;dietary;lysine;requirement;growth performance
摘  要：
7 purified diets with various lysine levels ranging from 0.85% to 2.95% were formulated by using crystal amino acids and intact protein amino acids from 10% casein and 5% gelatin.Levels of crystal lysine were graded and the percentage differences were compensated by levels of mixture of aspartic acid and glutamate(1:1) accordingly.Levels of other amino acids were maintained to analyzed ones in 40% protein of tail muscle.The diets were fed to 7 triple groups of Macrobrachium nipponense juveniles initially weighing 0.13 g for 7 weeks.The survival rates had no significantly differences(P>0.05) between treatments,while the weight gains of shrimps fed diets with various levels of lysine were significantly affected(P<0.05).Weight gain increased with increasing dietary lysine levels from 0.85% to 1.90%,and further increase dietary lysine level seemed to reach a platform.Feed efficiencies of shrimp fed diets with lysine levels ranging from 1.55% to 2.60% were significantly higher than that of shrimp fed a diet with 0.85% lysine(P<0.05).Broken line model regressions analysis of weight gain data showed that the dietary lysine requirement of the shrimp was 1.91% of dry diet or 5.41% of dietary protein.And based on this result,the recommended requirements for other 9 essential amino acids were calculated by using a reported essential amino acids profile through analyzing the tail muscle.

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