乳制品-酵母益生元对星斑川鲽幼鱼生长性能和抗氧化能力的影响  

Effect of dairy-yeast prebiotic on growth performance and antioxidant capability of juvenile starry flounder Platichthys stellatus

作　　者：张德瑞[1,2] 张利民[2] 王际英[2] 马晶晶[2] 李宝山[2] 姜柯君[1,2] 

机构地区：[1]上海海洋大学水产与生命学院,201306 [2]山东省海洋水产研究所,烟台264006

出　　处：《渔业科学进展》2013年第4期34-42,共9页Progress in Fishery Sciences

基　　金：国家海洋公益性行业科研专项(201205025);山东省科技发展计划项目(2010GZX20506);山东省财政支持农业重大应用技术创新课题(2009-2012);山东省水生动物营养与饲料泰山学者岗位经费(HYK201004)共同资助

摘　　要：选取平均初始体重为15.05±0.04g的星斑川鲽幼鱼540尾,随机分成6组,每组3个重复,分别饲喂添加0、0.4%、0.8%、1.2%、1.6%和2.0%乳制品-酵母益生元的试验饲料,实验期56d。结果表明:1)饲料中添加乳制品-酵母益生元可显著提高星斑川鲽幼鱼的增重率(WGR)、特定生长率(SGR)、摄食率(DFI)、蛋白质效率(PER)及肥满度(CF)(P<0.05),显著降低饲料系数(FCR)(P<0.05),但对星斑川鲽幼鱼的脏体比(VSI)、肝体比(HSI)无显著影响(P>0.05)。2)饲料中添加乳制品-酵母益生元显著提高了星斑川鲽幼鱼血清过氧化氢酶(CAT)、总超氧化物歧化酶(T-SOD)、抗超氧阴离子自由基(O2-·)的活性和总抗氧化能力(T-AOC)(P<0.05),显著提高星斑川鲽幼鱼肝脏中总超氧化物歧化酶(T-SOD)活性和总抗氧化能力(T-AOC)(P<0.05),同时显著降低了血清和肝脏中丙二醛(MDA)的含量(P<0.05)。本研究条件下,饲料中添加乳制品-酵母益生元可提高星斑川鲽幼鱼的生长性能及抗氧化能力,以特定生长率为评价指标,二次回归分析得出星斑川鲽幼鱼饲料中乳制品-酵母益生元的适宜添加量为1.32%。An 8-week feeding trial was conducted to study the effect of dairy-yeast prebiot- ic （Grobiotic-A） on the survival rate, growth performance and antioxidant capacity of juvenile starry flounder Platichtahys stellatus. A total of 540 fish at body weight of 15.05±0.04 g were randomly allocated into six groups with three replicates and each replicate contained 30 fish.The fish were fed diets supplemented with 0, 0.4%, 0.8%, 1.2%, 1.6% and 2.0% dairy- yeast prebiotic, respectively. The results are shown as follows. 1） weight gain rate （WGR）, specific growth rate （SGR）, feed intake （FI）, protein efficiency rate （PER） and condition fac- tor （CF） increased whereas feed conversion ratio （FCR） decreased significantly （P〈0.05） with the supplementation of dairy-yeast prebiotic in diets. However, there were no statistical differ- ences in viscerosomatic index （VSI）, hepatosomatic index （HSI） （P〉0.05） ; 2） compared with the control, the activity of catalase （CAT） and total anti-oxidation capability （T-AOC） in ser- um and liver, and superoxide dismutase （SOD） and anti-superoxide anion activities （T-AOC） in serum were significantly increased （P〈0.05）, while the malondialdehyde （MDA） content in serum and liver of fish fed diets supplemented with dairy-yeast prebiotic was significantly de- creased （P〈0.05）. These results indicated that dairy-yeast prebiotic positively influenced the growth performance and anti-oxidation of juvenile starry flounder in this experiment. Quadratic regression of SGR indicated that the optimal supplementation level of dairy-yeast prebiotic in ju- venile starry flounder diet was 1.32 %.

关 键 词：星斑川鲽 乳制品-酵母益生元 生长性能 抗氧化能力 

分 类 号：S917.4[农业科学—水产科学]