野生与养殖黄颡鱼鱼卵的营养成分比较  

Comparison of Nutritional Composition in Eggs between Wild and Cultured Yellow Catfish Pelteobagrus fulvidraco

作　　者：梁琍[1] 桂庆平 冉辉[1] 蒋左玉 姚俊杰[3] 

机构地区：[1]铜仁学院生物与农林工程学院,贵州铜仁554300 [2]铜仁市渔政管理所,贵州铜仁554300 [3]贵州大学动物科学学院,贵州贵阳550025

出　　处：《水产科学》2016年第5期522-527,共6页Fisheries Science

基　　金：贵州省科学技术基金资助项目[黔科合LH字(2014)7486];梵净山特色动植物资源重点实验室资助项目[黔教合KY字(2011)005]

摘　　要：以贵州省铜仁锦江河漾头河段野生黄颡鱼鱼卵和同一区域内养殖黄颡鱼鱼卵为研究对象,采用常规生化方法测定了野生与养殖黄颡鱼鱼卵氨基酸组成和含量,采用气相色谱技术检测了野生与养殖黄颡鱼鱼卵脂肪酸组成和含量。氨基酸测定结果表明,野生黄颡鱼鱼卵的氨基酸总量、必需氨基酸总量、鲜味氨基酸总量显著低于养殖黄颡鱼鱼卵(P<0.05),第一限制性氨基酸均为甲硫氨酸+半胱氨酸,必需氨基酸指数分别为55.60和59.12。脂肪酸测定结果表明,野生黄颡鱼鱼卵的饱和脂肪酸总量极显著高于养殖黄颡鱼鱼卵(P<0.01),单不饱和脂肪酸总量二者差异不显著(P>0.05),多不饱和脂肪酸总量极显著低于养殖黄颡鱼鱼卵(P<0.01),但野生黄颡鱼鱼卵的二十碳五烯酸和二十二碳六烯酸的总量极显著高于养殖黄颡鱼鱼卵(P<0.01),野生黄颡鱼鱼卵的n-3系列的多不饱和脂肪酸总量与n-6系列不饱和脂肪酸总量的比值(1.57)低于养殖黄颡鱼鱼卵(1.80)。The contents and compositions of amino acids and fatty acids were analysed in eggs of wild collected and cultured yellow catfish Pelteobagrus fulvidraco in basin of Yangtuo River,a tributary to Jinjiang River of Tongren,Guizhou Province,by a biochemical method and gas chromatography.The results showed that there were significantly lower total contents of amino acids,essential amino acids and delicious amino acids in the eggs of wild yellow catfish than those in the cultured one（P〈0.05）,with the first limiting amino acids Met＋Cys,and essential amino acid indices of 55.60 and 59.12,respectively.The total saturated fatty acids were shown to be very significantly higher in the eggs of wild yellow catfish than those in the eggs of cultured one（P〈0.01）,without significant difference in monounsaturated fatty acids between wild and cultured yellow catfish（P〉0.05）,significantly lower polyunsaturated fatty acids in the eggs of wild yellow catfish than those in the cultured one（P〈0.01）.However,there were very significantly higher contents of eicosapentaenoic acid and the total docosahexaenoic acid in the eggs of wild yellow catfish than those in the cultured one（P〈0.01）,with the ratio of n-3polyunsaturated fatty acids to n-6polyunsaturated fatty acids= 1.57 in the eggs of wild yellow catfish and the ratio of n-3polyunsaturated fatty acids to n-6polyunsaturated fatty acids= 1.80 in cultured yellow catfish.

关 键 词：黄颡鱼 鱼卵 营养成分 氨基酸 脂肪酸 

分 类 号：S965.199[农业科学—水产养殖]