池塘与网箱养殖匙吻鲟肌肉营养成分及品质评价  

Evaluation of nutrient components and nutritive quality of muscle between pond-and cage-reared paddlefish(Polyodon spathula)

作　　者：吉红[1,2,3] 孙海涛[1] 单世涛[2] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100 [2]西北农林科技大学安康水产试验示范站,陕西安康725000 [3]西北农林科技大学水产科学研究所,陕西杨凌712100

出　　处：《水产学报》2011年第2期261-267,共7页Journal of Fisheries of China

基　　金：西北农林科技大学安康水产试验示范站建设项目

摘　　要：对池塘和网箱养殖匙吻鲟肌肉营养成分及营养品质进行了比较研究。结果表明,池塘组肌肉粗蛋白和粗灰分含量高于网箱组(P<0.05),粗脂肪含量低于网箱组(P<0.05);池塘组和网箱组肌肉必需氨基酸构成比例均符合FAO/WHO的标准,必需氨基酸中都是赖氨酸(Lys)含量最高;池塘组鲜味氨基酸总量(∑DAA)低于网箱组(P<0.05);根据氨基酸评分(AAS)和化学评分(CS),池塘组和网箱组的第一限制性氨基酸均为缬氨酸(Val)和蛋氨酸+半胱氨酸(Met+Cys);池塘组∑MUFA含量高于网箱组(P<0.05),而∑SFA和∑PUFA含量低于网箱组(P>0.05);池塘组∑n-3PUFAs/∑n-6PUFA值低于网箱组(P<0.05),后者是前者的4.6倍;池塘组EPA+DHA值低于网箱组(P<0.05)。研究表明,网箱组匙吻鲟更符合人类健康饮食的要求,具有较高的营养价值。A comparative study was conducted on muscle nutritional component and nutritive quality between pond-and cage-reared paddlefish Polyodon spathula.Pond-reared fish were fed with commercial diet while those of cage-reared ones took natural diet,i.e.,zooplankton.The results showed that pond group contained significantly（P0.05）higher crude protein and crude ash and lower crude fat than cage group.The constitutional rate of essential amino acids met the Food and Agriculture Organization of the United Nations/Word Health Organization（FAO/WHO）standards and the content of Lys was highest in essential amino acids in both pond and cage groups.The content of total delicious amino acids（∑DAA）in pond group was significantly lower than that of cage group（P〈0.05）.According to nutrition evaluation in amino acids score（AAS）and chemical score（CS）,the first limited amino acids were Val and Met＋Cys in both pond and cage groups.The content of ∑MUFA in pond group was significantly higher than those of cage group（P〈0.05）,while contents of ∑SFA and ∑PUFA were lower than that of cage group（P〈0.05）.The percentages of ∑n-3PUFAs/∑n-6PUFA and EPA＋DHA in pond group were significantly lower than those of cage group（P〈0.05）.It is concluded that paddlefish reared with natural diet could be considered to be higher valued fish for human beings than that fed with commercial feed.

关 键 词：匙吻鲟 营养成分 营养品质 氨基酸 脂肪酸 池塘 网箱 

分 类 号：S965[农业科学—水产养殖]