饲料脂肪水平对红鳍东方鲀幼鱼生长、体组成及血液指标的影响  

Effects of Dietary Lipid Levels on Growth, Body Composition and Blood Parameters of Juvenile Takifugu rubripes

作　　者：孙阳[1] 姜志强[1] 李艳秋[1] 孟祥科[1] 吴洪[1] 

机构地区：[1]大连海洋大学农业部北方海水增养殖重点实验室,辽宁大连116023

出　　处：《天津农学院学报》2013年第3期14-18,共5页Journal of Tianjin Agricultural University

基　　金：辽宁省高等学校优秀人才支持计划"鲀红鳍东方遗传改良技术研究"(LR201010);国家海洋局公益性行业科研专项"海水鱼低碳高效养殖关键技术集成与示范"(201205025);辽宁省科技厅攻关项目"辽宁省海水集约化健康养殖技术研究与示范"(2011215002)

摘　　要：为研究不同脂肪水平对红鳍东方纯的影响，在18个200L圆形流水水槽中各放养体重大小接近的红鳍东方鲍幼鱼20尾，分别投喂脂肪水平为5．77％、7．71％、8．93％、11．89％、13．75％、16．42％的饲料，每个脂肪梯度设3个重复。56d饲养试验结束后，结果显示，东方纯增重率和特定生长率都呈先升高后降低的趋势。当脂肪水平为5．77％～13．75％时，饵料系数呈现逐渐降低的趋势，随着脂肪水平的进一步升高，饵料系数保持平稳，高脂肪组和低脂肪组差异显著（P〈0．05）。肝体比和脏体比都随脂肪水平升高而显著增加（P〈0．05）。肥满度的最大值出现在8．93％组，但与其他各组差异不显著（P〉0．05）。全鱼体成分分析表明，水分、灰分和粗蛋白含量随脂肪水平增加都呈下降趋势，且各组间差异显著（P〈0．05）；粗脂肪含量随脂肪水平增加，各组间显著升高（P〈0．05）。8．93％脂肪组血糖含量最高。各组谷丙转氨酶、总胆固醇和甘油三酯含量随脂肪水平增加均显著升高（P〈0．05）。结果提示，脂肪水平为8．93％的配合饲料对红鳍东方纯幼鱼的生长代谢最为有利。To explore the optimal level of dietary lipid for Takifugu rubripes juvenile, the juvenile with weight of （7.71 ±0.15） g were divided into 6 groups, each group containing 60 fish and the six groups were fed with six different levels of dietary lipid （5.77%, 7.71%, 8.93%, l 1.89%, 13.75% and 16.42%） for a period of 56 days. The results show that the body weight gain and special growth rate decreased significantly in the group of 16.42%, while increased in the groups of 5.77%, 7.71%, 8.93%,11.89% and 13.75% （P〈0.05）. Before the lipid level of 13.75%, the feed conversion ratio decreased with the lipid level increase, then there were no differences. Hepato index and viscera index increased significantly （P〈0.05） . The CF showed highest in the group of 8.93 %, but there were no obvious differences among groups. The levels of moisture, ash and crude protein decreased significantly with the level of the dietary lipid increasing, but the level of crude lipid increased significantly （P〈0.05）. The highest GLU appeared at the group of 8.93%. Levels of ALT, CHOL and TG increased significantly with the dietary lipid increasing （P〈0.05） . It suggests that the proper ratio of dietary lipid on the growth and metabolism of Takifugu rubripes was 8.93%.

关 键 词：脂肪水平 红鳍东方鲀 生长 体成分 血液指标 

分 类 号：S963[农业科学—水产养殖]