不同规格青海湖裸鲤形体特征和肌肉营养成分比较  

Comparison of Body Characteristics and Muscle Nutritional Components between Different Specifications of Gymnocypris przewalskii

作　　者：周其椿 赵振新 李建光[1,2] 张显波 赵飞 ZHOU Qi-chun;ZHAO Zhen-xin;LI Jian-guang(Institute of Fisheries,Guizhou Academy of Agricultural Sciences,Guiyang,Guizhou 550025;Special Aquatic Engineering Technology Center of Guizhou Province,Guiyang,Guizhou 550025)

机构地区：[1]贵州省农业科学院水产研究所,贵州贵阳550025 [2]贵州省特种水产工程技术中心,贵州贵阳550025

出　　处：《安徽农业科学》2021年第17期100-101,共2页Journal of Anhui Agricultural Sciences

基　　金：贵州省科技厅支撑项目[黔科合支撑(2019)2349];贵州省农业科学院青年基金项目[黔农科院青年基金(2017)21]。

摘　　要：测定了2种不同规格青海湖裸鲤形体特征和肌肉营养成分指标。结果表明:不同规格青海湖裸鲤各形体指标均存在显著差异,其中大规格鱼体长和肌肉占比显著高于小规格鱼,而大规格鱼的肥满度显著低于小规格鱼。大规格鱼体肌肉水分含量显著高于小规格鱼,粗蛋白含量、总氨基酸和总脂肪酸含量均显著低于小规格鱼。此外,不同规格青海湖裸鲤粗脂肪与粗灰分的含量均无显著差异。综上所述,随着体格的不断增长,青海湖裸鲤的出肉率呈上升趋势,但其营养价值却有所降低,其原因有待进一步研究。The body characteristics and muscle nutritional components of two different specifications of Gymnocypris przewalskii were determined.The results showed that there were significant differences in body characteristics indices among different specifications of G.przewalskii,the body length and muscle proportion of large size fish were significantly higher than those of small size fish,while the fatness of large size fish was significantly lower than that of small size fish.The muscle moisture content of large size fish was significantly higher than that of small size fish,but the content of crude protein,total amino acids and total fatty acids were significantly lower than those of small size fish.In addition,there was no significant difference in the content of crude fat and ash between different specifications of G.przewalskii.In sum,with the increasing of the specification,the meat yield of G.przewalskii showed an upward trend,but the nutritional value decreased.The reasons needed to be further studied.

关 键 词：青海湖裸鲤 形体特征 肌肉营养成分 

分 类 号：S917.4[农业科学—水产科学]