摘要
为了对草鱼体组成进行定量描述,本研究从中外文数据库收集并采纳了51个草鱼营养生理相关研究的数据,数据点约3700个,草鱼体质量为1.52-694.80 g。通过数据整理、相关性分析和线性回归分析,结果显示,草鱼蛋白质含量和内脏重（y,g）与体质量（x,g）间的线性关系分别为y=0.1604x–0.3645,R2=0.994;y=0.1059x–0.3097,R^2=0.9875。随着草鱼体质量增加,草鱼脂肪和灰分含量（尤其是脂肪含量）受饲料组成的影响逐渐增加。草鱼全鱼每沉积1 g蛋白质伴随着4.57 g水分保留,而每沉积1 g脂肪会导致水分含量减少0.95 g。草鱼肝脏每沉积1 g脂肪会导致其水分含量减少0.66 g,说明草鱼不同组织沉积脂肪导致的水分损失率不尽相同。本研究亦表明,肠系膜是草鱼脂肪沉积的重要部位,肠系膜、肝脏和肌肉脂肪的积累是全鱼脂肪含量上升的重要原因,全鱼脂肪累积伴随着内脏重的增加。本研究的执行有利于定量描述草鱼体组成规律,为草鱼的生产和销售提供指导作用。
To quantify the body cmposition of grass carp,about 3700 datasets were adopted from 51 studies regarding body composition and morphological parameters of grass carp with body weights ranging from 1.52 to 694.80 g after data searching and collecting from academic database. Through data classification,correlation analysis and linear regression analysis,the overall results in the present experiment suggested that close linear relationships of whole-body protein content and viscera weight （y, g） with body weight of grass carp （x, g） were obtained respectively： y=0.1604x-0.3645, R2=0.994; y=0.1059x-0.3097, R^2=0.9875. With an increase of body weight,whole-body lipid and ash contents （especially the lipid content） of grass carp are more susceptible to dietary manipulations. Deposition of 1 g protein resulted in a retention of 4.57 g moisture,while accumulation of 1 g lipid entailed a decrease of 0.95 g moisture in the whole-body of grass carp. In the liver,deposition of 1 g lipid entailed a decrease of 0.66 g moisture,suggesting that the loss rate of moisture driven by lipid deposition is tissue specific in grass carp. The present study also demonstrated that mesentery is an important site for lipid deposition in grass carp,and an increase of lipid accumulation in mesentery,liver and muscle contributes to whole-body lipid deposition. In addition,an increase of whole-body lipid content is accompanied by increased viscera weight. The results in this study are helpful to quantify the body composition of grass carp and provide scientific guidance for its practical production.
出处
《水产学报》
CAS
CSCD
北大核心
2016年第4期566-576,共11页
Journal of Fisheries of China
基金
国家自然科学基金(31502181)
中国博士后科学基金面上资助(2015M582505)
重庆市项目博士后资助(Xm2015045)
中央高校基本科研业务费(XDJK2015C080)~~
关键词
草鱼
体组成
形态学参数
定量描述
Ctenopharymgodon idella
body composition
morphological indices
quantitative description
