乳化剂对团头鲂生产性能、脂肪酶活性及血液生化指标的影响  

Effects of Emulsifier on Growth,Lipase Activity and Plasma Biochemical Indices in Bluntnose Black Bream Megalobrama amblycephala

作　　者：阮剑均[1] 张严伟[1] 温超[1] 刘文斌[2] 周岩民[1] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]南京农业大学动物科技学院江苏省水产动物营养重点实验室,江苏南京210095

出　　处：《水产科学》2012年第10期577-581,共5页Fisheries Science

基　　金：现代农业产业技术体系建设专项资金(nycytx-49-21)

摘　　要：在基础日粮中添加乳化剂研究其对团头鲂生产性能、肌肉组织成分、肠道和肝胰脏脂肪酶活性及血浆生化指标的影响,并初步探讨乳化剂在团头鲂养殖中的应用效果。用初始体质量约70g团头鲂480尾,随机分成4组,每组4重复,每重复30尾,分别饲喂不添加乳化剂的基础日粮(对照组)和添加复合乳化剂250、500、1000g/t的试验日粮。试验结果表明,添加乳化剂1000g/t,能显著提高团头鲂的质量增加率及特定生长率(P<0.05)。3个处理组的肌肉粗蛋白含量极显著提高(P<0.01),但肌肉粗脂肪、肝胰脏的粗蛋白和粗脂肪含量均无显著差异(P>0.05)。添加乳化剂250g/t,团头鲂肠道脂肪酶活力和血浆总胆固醇含量均显著提高(P<0.05),而甘油三酯含量随乳化剂添加量的提高而降低(P>0.05);各试验组的低密度脂蛋白胆固醇含量均显著低于对照组(P<0.05),但高密度脂蛋白胆固醇和极低密度脂蛋白胆固醇无显著变化(P>0.05)。添加乳化剂能提高团头鲂的生长速度,使肌肉蛋白质沉积增加、脂肪沉积减少,并能降低血浆低密度脂蛋白胆固醇含量,其中以添加乳化剂1000g/t的使用效果最佳。A feeding experiment was conducted to investigate effects of various levels of emulsifier on growth performance,tissue composition,lipase activity and plasma biochemical indices in bluntnose black bream Megalobrama amblycephala.A total of 480 bluntnose black bream weighing about 70 g were randomly allocated to 4 groups of each 30 fish,and fed the diets containing 0（as control group）,250,500,1000 g/t emulsifier with tetraplication.The results showed that there were significant increase in weight gain,specific growth rate（P0.05）,and muscular crude protein content（P0.01） in the fish fed the diets containing 1000 g/t emulsifier.But there were no significant increase in weight gain,specific growth rate,and crude fat content in muscle and crude protein and crude fat content in hepatopancreas in the fish fed the diets containing 1000 g/t emulsifier（P0.05）.The fish fed the diets containing 250 g/t emulsifier had higher lipase activity in intestine and higher total cholesterol（TC） content in plasma,and lower low density lipoprotein-cholesterol（LDL-C） content in plasma compared with those in the control group（P0.05）.The findings suggested that the emulsifier improve growth and muscular protein retention and decrease plasma LDL-C level in bluntnose black bream,with emulsifier optimal supplementation level of 1000 g/t.

关 键 词：团头鲂 乳化剂 生产性能 血液生化指标 

分 类 号：S965.119[农业科学—水产养殖]