兴凯湖翘嘴鲌野生和养殖群体脂肪酸及相关血液指标的比较

对3龄、4龄和5龄兴凯湖翘嘴鲌(Culter alburnus)野生和养殖群体肌肉脂肪含量、脂肪酸含量以及部分血液生化指标进行了分析比较.结果表明:在兴凯湖翘嘴鲌野生与养殖群体肌肉中均检测到18种脂肪酸,以油酸、亚油酸和棕榈酸为主.野生群体肌肉饱和脂肪酸(SFA)、多不饱和脂肪酸(PUFA)、二十碳五烯酸(EPA)和二十二碳六烯酸(DHA)总量显著高于养殖群体(P＜0.05).随年龄增长,除SFA外,野生与养殖群体的单不饱和脂肪酸(MUFA)总量、PUFA和EPA+ DHA总量均呈增高趋势.养殖群体肌肉脂肪含量显著高于野生群体(P＜0.05),且与年龄呈正相关.野生群体血液血糖(GLU)、甘油三酯(TG)和胆固醇(TC)含量显著低于养殖群体,高密度脂蛋白胆固醇(HDLC)含量显著高于养殖群体(P＜0.05).随年龄增长,除养殖群体的GLU含量无显著变化外,其余各项指标均有增高趋势.

Comparison of fatty acids and blood indexes between wild and cultured populations of Culter alburnus in Xingkai Lake

The muscle fat contents,fatty acid components and the blood biochemical index were analyzed and compared between the wild and cultured populations of Culter alburnus in Xingkai lake at 3,4 and 5 years old.The results showed that,there were 18 kinds of fatty acids in wild and cultured populations of C.alburnus in Xingkai lake,mainly were C18∶ 1,C18∶ 2n-6 and C16∶ 0.The total amount of saturated fatty acids(SFA),polyunsaturated fatty acids(PUFA),eicosapentaenoic acid(EPA) and docosahexaenoci acid(DHA) in the muscle of wild population were significantly higher than cultured population(P<0.05).With the increasing of age,except SFA,monounsaturated fatty acids(MUFA),PUFA and EPA + DHA among wild and cultured populations showed a rising trend.The muscle fat content of cultured population was significantly higher than wild population(P<0.05),and positively correlated with age.Glucose(GLU),triglyceride(TG) and cholesterol(TC) contents in the blood of wild population were significantly lower than the cultured population,HDLC was obviously higher in wild population than cultured population(P<0.05).With the increasing of age,except GLU content of cultured population that,all the indexes showed a rising trend.