池塘循环水槽养殖模式对斑点叉尾鮰鱼肉营养品质的提升作用  

Improvement of in-pond raceway system on the nutritional quality in the muscle of Letaurus punetaus

作　　者：刘崇万 朱晓华[1,2] 孟勇 徐志华[1,2] 沈美芳 陈校辉 边文冀[1] LIU Chong-wan;ZHU Xiao-hua;MENG Yong;XU Zhi-hua;SHEN Mei-fang;CHEN Xiao-hui;BIAN Wen-ji(Jiangsu Provincial Institute of Freshwater Fisheries/Jiangsu Provincial Key Laboratory for Quality and Safety of Fishery Products,Nanjing 210017,China;Aquatic Products Analysis&Testing Center of Jiangsu Province/Quality Control&Inspection Center for Domestic Fishery Products(Nanjing),Ministry of Agricultural and Rural Affairs,Nanjing 210017,China)

机构地区：[1]江苏省淡水水产研究所/江苏省渔业产品质量安全重点实验室,江苏南京210017 [2]江苏省水产质量检测中心/农业农村部渔业产品质量监督检验测试中心(南京),江苏南京210017

出　　处：《江苏农业学报》2021年第2期418-425,共8页Jiangsu Journal of Agricultural Sciences

基　　金：江苏现代农业产业技术体系建设项目[JATS(2020)329];现代农业产业技术体系专项(CARS-46);2020年度江苏省第五期“333工程”科研资助项目(BRA2020374)。

摘　　要：为探究池塘循环水槽(In-pond raceway system,IPRS)养殖模式对斑点叉尾鮰(Letaurus punetaus)肌肉营养品质的影响,以传统池塘养殖(Traditional pond system,TPS)模式为对照,随机采集两种模式下的养殖水及斑点叉尾鮰,测定其养殖水质及基础营养成分,同时对氨基酸及脂肪酸的组成及含量进行比较分析。结果显示,IPRS模式养殖水溶解氧含量极显著高于TPS模式(P<0.01),铵态氮、悬浮物、总氮、溶解性总氮、总磷及高锰酸盐指数均显著或极显著低于TPS模式(P<0.05或P<0.01);且IPRS模式斑点叉尾鮰肌肉粗蛋白质含量极显著高于TPS模式(P<0.01),粗脂肪含量极显著低于后者(P<0.01);两种养殖模式下氨基酸及脂肪酸种类无显著差异,但IPRS模式总氨基酸、总必需氨基酸、总非必需氨基酸及总呈鲜味氨基酸含量均显著高于TPS模式,尤其是谷氨酸、天冬氨酸及缬氨酸,同时,总多不饱和脂肪酸也显著高于TPS模式,以亚油酸及DHA两种物质含量尤为突出。说明,与TPS模式相比,IPRS模式能够有效改善养殖水质,并可显著提高斑点叉尾鮰肌肉粗蛋白质含量并降低粗脂肪含量,养殖模式对于斑点叉尾鮰肌肉氨基酸与脂肪酸组成无显著影响,但IPRS模式可显著提高部分氨基酸及脂肪酸的含量,从而提高斑点叉尾鮰肌肉营养品质。IPRS模式作为一种新兴的健康生态养殖模式,适合斑点叉尾鮰集约化、高密度养殖。To investigate the effect of in-pond raceway system(IPRS)culture mode on the muscle nutritional quality of Letaurus punetaus,the traditional pond system(TPS)was selected as control and the culture water and L.punetaus of two modes were collected randomly to detect the quality and basic nutritional components of the culture water,while the composition and contents of amino acids and fatty acids of L.punetaus were compared and analyzed.The results showed that,the dissolved oxygen content in the culture water of IPRS mode was very significantly higher than that of TPS mode(P<0.01),the ammonia nitrogen content,suspended matter content,total nitrogen content,total dissolved nitrogen content,total phosphorus content and the permanganate index of IPRS mode were significantly or very significantly lower than that of TPS mode(P<0.05 or P<0.01).The crude protein content in L.punetaus of IPRS mode was very significantly higher than that of TPS mode(P<0.01),while the crude fat content was very significantly lower than that of TPS mode(P<0.01).There was no significant difference in amino acids and fatty acids varieties between the two culture modes,but the content of total amino acids,total essential amino acids,total non-essential amino acids and total delicious amino acids of the IPRS mode were significantly higher than that of TPS mode,especially for the contents of glutamic acid,aspartic acid and valine.Meanwhile,the content of total polyunsaturated fatty acid(PUFA)of IPRS mode was also significantly higher than that of TPS mode,especially for the contents of linoleic acid and docosahexaenoic acid(DHA).In conclusion,the quality of culture water of IPRS mode was effectively improved compared with TPS mode,and the crude protein content in the muscle of L.punetaus was significantly improved,while the crude fat content was decreased.The culture modes had no significant effect on the composition of amino acids and fatty acids in the muscle of L.punetaus,but the IPRS mode could significantly increase part of the contents of ami

关 键 词：斑点叉尾鮰 池塘循环水槽养殖 肌肉营养品质 

分 类 号：S965.199[农业科学—水产养殖]