饲料脂肪水平对曼氏无针乌贼生长的影响  

Effects of the Dietary Lipid Levels on the Growth and Feed Utilization of Sepiella maindroni

作　　者：游岚 

机构地区：[1]福建省渔业指挥部办公室,福建福州350003

出　　处：《集美大学学报（自然科学版）》2015年第1期6-13,共8页Journal of Jimei University：Natural Science

基　　金：福建省科技厅资助项目(2009S0057;2010N3027)

摘　　要：研究了饲料脂肪水平对曼氏无针乌贼生长性能和饲料利用率的影响.试验以鱼油为脂肪源,配制脂肪水平分别为6%、8%、10%、12%和14%的5种饲料,对平均初始体重为（1.45±0.15）g的曼氏无针乌贼进行为期60 d的饲养实验,在饲养30 d和60 d时各取样一次进行分析.结果表明：在饲养30 d和60 d时,随着饲料脂肪水平的升高,曼氏无针乌贼的相对增重率、肝体比、肥满度、特定生长率、饲料转化率、蛋白质效率和成活率都呈抛物线变化,但相对增重率、特定生长率、饲料转化率、蛋白质效率和成活率差异显著（P〈0.05）,肝体比和肥满度差异不显著（P〉0.05）.综合各项指标并分析特定生长率、饲料转化率、蛋白质效率和成活率的回归关系,推测曼氏无针乌贼配合饲料中适宜的脂肪水平为8.92%～9.19%.The present study evaluated the effects of dietary lipid levels on the growth and feed utilization of Sepilla maindroni whose average weight were（ 1. 45 ± 0. 15） g. Five experimental diets were evaluated,with different fish oil fat levels of 6%,8%,10%,12% and 14%. During the 60-day feeding experiment,individuals with 30 days and 60 days treatments were sampled to analyze the dietary effects,respectively.The results showed that relative weight-gaining rate,liver to body ratio,fullness,specific growth rate,feed conversion efficiency,protein efficiency ratio and survival rate of S. maindroni were parabolicly related to the increase of dietary lipid levels in both the 30 d and 60 d treatments. Weight gain rate,specific growth rate,feed conversion efficiency,protein efficiency ratio and survival rate showed significant（ P〈0. 05） differences in the different lipid levels,respectively. While liver and body ratio and fullness were not significantly（ P〉0. 05） affected. The dietary lipid levels ranging from 8. 92% ～ 9. 19% appears to meet the lipid requirement for S. maindroni,as reaveled by the analyses of the indicators and the regression analysis between specific growth rate,feed conversion efficiency,protein efficiency ratio and survival rate.

关 键 词：曼氏无针乌贼 脂肪 特定生长率 饲料转化率 蛋白质效率 

分 类 号：S963.7[农业科学—水产养殖]