鲫鱼鱼体的化学组成和能量密度  

Chemical Composition and Energy Density in Carassius auratus

作　　者：刘书婷[1] 黄庆达[1] 张玉蓉[1] 罗毅平[1] 

机构地区：[1]西南大学淡水鱼类资源与生殖发育教育部重点实验室,重庆400715

出　　处：《重庆师范大学学报（自然科学版）》2013年第5期32-36,共5页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金(No.31000958);重庆市科委重点实验室专项经费(2012);重庆市自然科学基金(No.CSTC2013jcyjA80023)

摘　　要：2012年6月于重庆市北碚区歇马养殖场采集鲫鱼(Carassius auratus)31尾,体质量(W)范围3.0～284.8g,体长(L)范围5.5～22.6cm,分为4个体长组,测定了鱼体化学组成,估算了能量密度。结果表明,鲫鱼含水量(WAT)、蛋白质含量(PRO)、脂肪含量(FAT)和灰分含量(ASH)占鱼体鲜重的百分比范围分别为68.58%～78.99%、7.81%～18.87%、0.55%～9.11%和3.25%～6.59%,能量密度(E)范围为2.06～7.68kJ·g-1。体质量与脂肪含量和能量密度的关系可分别描述为方程:FAT=0.025 6 W+1.59(R2=0.561,n=31,p<0.01)和E=0.010 2 W+3.94(R2=0.395,n=31,p<0.01);含水量与脂肪含量和能量密度的关系可分别描述为方程:FAT=-0.855 WAT+67.5(R2=0.753,n=31,p<0.01)和E=-0.380 WAT+33.1(R2=0.662,n=31,p<0.01)。研究提示可以用体质量和含水量估测鲫鱼的脂肪含量和能量密度;随着个体体质量的增加,水分和脂肪之间存在近等比例的替代。31 specimens of Carassiusauratus were collected from Xiema fishery farms, Beibei, Chongqing in June, 2013. Body mass （W） ranged 3.0-284.8 g and body length （L） ranged 5.5-22.6 cm. The fish were divided into 4 groups based on their body length. Chemical compositions were measured and energy density was estimated. The results showed that the contents of water （WAT）, protein （PRO）, lipid （FAT） and ash （ASH）, ranged 68.58%- 78.99%, 7.81%- 18.87%, 0.55% -9.11% and 3.25%-6.59%, respectively. The energy density （E） ranged 2.06-7.68 kJ .g-1. The relationship between FAT or E and W could be described as; FAT=0. 025 6W＋1. 59 （R2 =0. 561, n=31, p〈0.01） and E=0. 010 2W＋3.94 （R2 =0. 395, n=31, p〈 0.01）. The relationship between FAT or E and W could be described as： FAT= -0. 855WAT＋67.5 （R2 =0. 753, n=31, p% 0.01） and E=-0. 380WAT＋33.1 （R2 =0. 662, n=31, p〈0.01）. The results suggest that lipid content and energy density of Carassius auratus can be estimated by body mass and water content. WAT is replaced with FAT approximately isometrically as the body mass increases.

关 键 词：鲫鱼 化学组成 脂肪 能量密度 

分 类 号：Q955[生物学—动物学]