饲料中添加桑叶粉对草鱼生长、体组成及血清生化指标的影响  

Effect of Mulberry Leaf Powder Addition in Diets on the Growth Performance, Body Composition and Serum Biological Indexes of Grass Carp

作　　者：钱文春 孙丽慧[1] 陈建明[1] 史星雲 李倩[1] 吕志强[3] 沈晓龙 Qian Wenchun;Sun Lihui;Chen Jianming;Shi Xingyun;Li Qian;Lyu Zhiqiang;Shen Xiaolong(Key Laboratory of Healthy Freshwater Aquaculture,Ministry of Agriculture and Rural Affairs,Zhejiang Institute of Freshwater Fisheries,Huzhou Zhejiang 313001,China;Huzhou Agricultural Science and Technology Development Center(Huzhou Academy of Agricultural Sciences),Huzhou Zhejiang 313000,China;Institute of Sericulture and Tea,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China;Huzhou Nanxun Yunhao Family Farm,Huzhou Zhejiang 313018,China)

机构地区：[1]浙江省淡水水产研究所,农业农村部淡水渔业健康养殖重点实验室,浙江湖州313001 [2]湖州市农业科技发展中心(湖州市农业科学研究院),浙江湖州313000 [3]浙江省农业科学院蚕桑与茶叶研究所,杭州310021 [4]湖州南浔云豪家庭农场,浙江湖州313018

出　　处：《蚕业科学》2022年第5期443-449,共7页ACTA SERICOLOGICA SINICA

基　　金：浙江省蚕桑产业技术项目(2020-2022);财政部与农业农村部国家现代农业产业技术体系项目。

摘　　要：为探索桑叶粉用作草鱼配合饲料原料的可行性,通过制备含不同用量桑叶粉的草鱼饲料,开展2期饲养试验,调查桑叶粉用量对草鱼生长、饲料利用、体成分及血清生化指标等的影响。结果表明,草鱼摄食桑叶粉质量分数为2%、4%和5%的饲料后鱼体增重(WG)和饲料系数(FCR)与摄食不含桑叶粉的饲料组均无显著差异,而饲料中桑叶粉用量进一步提高,草鱼的WG显著降低,FCR显著升高;草鱼摄食含15%和20%桑叶粉的饲料后全鱼粗脂肪含量显著下降,肌肉中的粗脂肪含量均随饲料中桑叶粉用量增加而呈下降趋势;饲料中桑叶粉质量分数为4%或更高时草鱼血清葡萄糖(GLU)水平显著降低;饲料中添加桑叶粉不影响草鱼的成活率(SR)和鱼的体型指数,包括肥满度(CF)、脏体指数(VSI)和肝体指数(HSI)。总之,草鱼饲料中桑叶粉的适宜添加量为2%~5%,如果草鱼饲料中桑叶粉质量分数超过5%,会使鱼的生长速度减慢,饲料系数提高。To investigate the potential use of mulberry leaf powder(MLP) as an ingredient of formulated diet for grass carp, two feeding trials were carried out by formulating diets with MLP of graded levels. The growth performance, feed utilization, body composition and serum biological indexes were evaluated. Results showed that the weight gain(WG) and feed conversion ratio(FCR) of fish fed diets with 2%, 4% and 5% MLP were not significantly different from those of fish fed the diet without MLP. However, with the further increase of MLP in the feed, WG of grass carp decreased significantly and FCR increased significantly. Fish fed diets with 15% and 20% MLP had lower crude fat content in whole fish body. Crude fat content in muscle tended to decrease with the increase of dietary MLP levels. Fish fed diets with over 4% MLP had lower levels of serum glucose(GLU). The survival rate(SR) and body morphology index, including condition factor(CF), visceral-somatic index(VSI) and hepato-somatic index(HSI) were not affected by dietary MLP addition. In conclusion, the suitable level of dietary addition of MLP for grass carp were 2%-5%, and MLP levels above 5% would compromise fish growth and feed utilization.

关 键 词：草鱼 桑叶粉 鱼体增重 饲料系数 鱼体组成 血清生化指标 

分 类 号：S963.7[农业科学—水产养殖] S886.9[农业科学—水产科学]