摘要
冷水性鱼经济意义的优势在于其营养价值丰富,高不饱和脂肪酸(HUFA)含量丰富。本文总结了冷水性鱼在幼鱼阶段脂肪酸营养生理的研究进展,涉及其必需脂肪酸(EFA)的种类和需求量,饲料中多不饱和脂肪酸(PUFA)的适宜比例;脂肪酸"质"与"量"对鱼体脂类代谢生理机制的影响,内源性脂肪转化酶——脂肪酸合成酶(FAS)、脂蛋白脂酶(LPL)与脂肪酸代谢酶——脂肪酰基去饱和酶(Δ6Fad、Δ5Fad)和脂肪酰基延长酶(Elovl2、Elovl5)等关键酶活性和基因表达的调节;植物油替代鱼油在冷水性鱼幼鱼阶段的应用以及体组织中n-3 PUFA含量降低和改善方法探讨。通过上述总结,以期为冷水性鱼饲料的开发利用提供参考,促进其健康养殖的发展,为人类提供优质的冷水性鱼产品。
Economic advantage of coldwater fish is their rich nutritional value, they contain higher contents of high unsaturated fatty acids （ HUFA ） . This paper reviewed the recent advance of nutritional physiology re-search on fatty acids of juvenile stage of coldwater fish. Contents focused on the kinds and replacements of es-sential fatty acids （ EFA） for the coldwater fish, the suitable proportion of polyunsaturated fatty acids （ PU-FA）; effects of “quality” and“quantity” of fatty acids on lipid metabolism mechanisms of fish body, regula-tion of the activities and gene expressions of key enzymes of endogenous fat biotransformation [ such as fatty acid synthase （FAS）, lipoprotein lipase （LPL）] and fatty acid metabolism [such as fatty acyl desaturases （Δ6Fad and Δ5Fad） and fatty acyl elongases （Elovl2 and Elovl5）]; application of vegetable oil instead of fish oil in juvenile stage of coldwater fish, and the content of n-3 PUFA reduced in fish tissue and improving methods. Thus we can provide references for the development and utilization of feed for coldwater fish, pro-mote the development of its health cultivation, provide human quality products of coldwater fish.
出处
《动物营养学报》
CAS
CSCD
北大核心
2015年第3期722-730,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家自然科学基金项目(31260638
31360640和3143692)
内蒙古自治区高等学校"青年科技英才资助计划"项目(NJYT-14-B13)
关键词
冷水性鱼
幼鱼
脂肪酸
脂类代谢
鱼油替代
coldwater fish
juvenile
fatty acid
lipid metabolism
replacement of fish oil
