不同脂肪源对管角螺生长和体成分的影响  

Effects of dietary oil sources on growth performance and body composition of Hemifusus tuba

作　　者：罗江[1] 蒋霞敏[1] 杜学星[1] 

机构地区：[1]宁波大学海洋学院,浙江宁波315211

出　　处：《生物学杂志》2014年第1期45-50,共6页Journal of Biology

基　　金：浙江省重大科技专项(2009C12076);浙江省大学生科技成果推广项目(013450932)

摘　　要：在基础配合饲料中添加(4%)不同脂肪源[鱼油、猪油、豆油、花生油、混合油Ⅰ(鱼油∶豆油=1∶1)、混合油Ⅱ(鱼油∶猪油∶豆油∶花生油=1∶1∶1∶1)]配制成6组实验饲料,对体重(2.23±0.05)g的管角螺幼螺进行60 d的饲养试验。结果表明,鱼油组摄食率(34.10 g/d·ind·103)、增重率(64.33%)和特定生长率(0.79%)最高,与混合油Ⅰ组没有显著差异(P>0.05),并显著高于其他各组(P<0.05),最低的为猪油组;肝体比没有显著差异(P>0.05),猪油组最高(1.33),混合油Ⅰ组最低(1.22);饲料转化率和存活率没有显著差异(P>0.05);鱼油组粗蛋白含量(肌肉:18.35%;肝脏:17.55%)显著高于猪油组、豆油组、花生油组和混合油Ⅱ组,猪油组(2.96%)和鱼油组(2.86%)肝脏粗脂肪含量显著高于其他各组(P<0.05),水分和灰分没有显著差异(P>0.05);鱼油组EPA(肌肉:4.44%;肝脏:5.89%)和DHA(肌肉:4.53%;肝脏:5.65%)含量,n-3/n-6(肌肉:1.57;肝脏:1.69)均最高,与混合油Ⅰ组没有显著差异(P>0.05)。从人体健康和生产角度来说,以混合油Ⅰ作为管角螺脂肪源不但可以得到较好的生长效果,还可以节约饲料成本。Different lipids [fish oil （FO）, lard oil （LO）, soybean oil （SO）, peanut oil （PO）, mixed oil I （MO I） （FO ：SO = 1 ： 1 ）, and mixed oil II （ MOII） （ FO ： LO ： SO： PO = 1 ： 1 ： 1 ： 1 ） ] were added （4%） to the basic dietary to feed the juvenile Hemifu- sus tuba （weight 2. 23g ＋0.05 g） for 60 days. The result showed that the FR （34. 10 g · d^-1 · ind^-1 · 10-3 ）, WGR （64. 33% ）, and SGR （0. 79% ） of FO group were equivalent to those of MO I group （P 〉 0.05 ）, but they were significant higher than those of the other groups （P 〈 O. 05）, and the lowest was LO group. The HSI was no significant difference between groups, the highest was LO group （ 1.33）, and the lowest was MO I group （1.22）. There is no significant difference between FCR and SR. The crude protein （ muscle ： 18.35 % ; liver： 17.55% ） of FO group was significant higher than that of LO, SO, PO, and MOII groups （ P 〈 0.05 ） ; the crude lipid of liver in LO group （2. 96% ） and FO group （2. 86% ） was significant higher than that in other groups （P 〈0. 05） ; there was no significant difference between moisture and ash （ P 〉 0. 05 ）. The EPA （ muscle： 4. 44% ; liver： 5.89% ）, DHA （ muscle： 4. 53% ; liver： 5.65% ）, and n - 3/n - 6 （ muscle： 1.57 ; liver： 1.69） of FO group were the highest and there was no significant difference with MO I group （P 〉 O. 05 ）. Considering the body healthy and production, selecting MO I as the lipid source of Hemifusus tub can not only obtain good growth, but also save diet costs.

关 键 词：管角螺 脂肪源 生长 体成分 

分 类 号：S917.4[农业科学—水产科学]