青红杂交斑与其亲本肌肉营养成分分析及品质评价

Analysis and Quality Evaluation of Nutritional Components in the Muscles of Qinhong Hybrid Rockfish(Epinehelus coioides♀×Epinehelus akaara♂)and Its Parents Epinehelus coioides and Epinehelus akaara

通过对青红杂交斑及其亲本赤点石斑鱼、斜带石斑鱼的肌肉营养成分进行分析和品质评价,旨在为其种质营养学鉴定及配合饲料的研制提供基础数据资料。结果显示:青红杂交斑与赤点石斑鱼的肌肉质构指标比较相近。青红杂交斑、赤点石斑鱼和斜带石斑鱼肌肉的粗蛋白含量分别为20.44%、19.49%和20.34%,必需氨基酸含量丰富、比例适宜;青红赤交斑、赤点石斑鱼和斜带石斑鱼的粗脂肪含量分别为1.79%、2.95%和1.07%,脂肪酸种类丰富,多不饱和脂肪酸含量高,其比例符合理想脂肪酸的标准。3种石斑鱼肌肉中矿物质元素种类丰富,其中青红杂交斑的磷、钾、钙含量均高于其父母本,铁和钠含量介于父母本之间,锌和硒含量均低于父母本。由此可见,青红杂交斑的矿物质种类丰富,不饱和脂肪酸含量较高,人体必需氨基酸含量丰富、比例适宜,部分营养指标高于其父本或母本,显现出一定的杂交优势,是具有较高食用价值的优良海水养殖品种。该研究结果为青红杂交斑的种质评价提供了基础数据,并为其推广养殖打下了坚实基础。

The muscle nutritional components of Qinghong hybrid rockfish(Epinehelus coioides♀×Epinehelus akaara♂)and its parents E.coioides and E.akaara were analyzed and evaluated,in order to provide basic data for the identification of germplasm nutritional identification and the preparation of compound feed.The results showed that the muscle texture properties of Qinghong hybrid rockfish(E.coioides♀×E.akaara♂)were similar to those of E.akaara.The content of crude protein in the muscles of Qinghong hybrid rockfish,E.akaara and E.coioides were 20.44%,19.49%and 20.34%,respectively.The content of essential amino acids was rich and the proportion was suitable.The content of crude fat in the muscles of Qinghong hybrid rockfish,E.akaara and E.coioides were 1.79%,2.95%and 1.07%,respectively.The fatty acids were rich in variety and high in polyunsaturated fatty acids,and the ratio met the standards of ideal fatty acids.There were rich kinds of mineral elements in the muscles of three breeds of rockfish.The contents of P,K and Ca in Qinghong hybrid rockfish were higher than those in its parents.And its contents of Fe and Na were between those of its parents,and its contents of Zn and Se were lower than those of its parents.Therefore,Qinghong hybrid rockfish had abundant kinds of mineral elements,higher content of unsaturated fatty acids,abundant content and suitable proportion of essential amino acids.The content of some nutritional indexes in Qinghong hybrid rockfish was higher than those in its its parent,showing certain hybridization advantages.So Qinghong hybrid rockfish was an excellent mariculture variety with high food value.The results of this study provided the basic data for the germplasm evaluation and popularization breeding of Qinghong hybrid rockfish.