Dietary lysophospholipids improves growth performance and hepatic lipid metabolism of largemouth bass(Micropterus salmoides)  

作　　者：Mingxiao Che Ziye Lu Liang Liu Ning Li Lina Ren Shuyan Chi 

机构地区：[1]Laboratory of Aquatic Nutrition and Feed,Guangdong Ocean University,Zhanjiang 524088,China [2]Kemin AquaScience,Zhuhai 519040,China

出　　处：《Animal Nutrition》2023年第2期426-434,共9页动物营养（英文版）

基　　金：supported by Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Team(2023KJ150);Special Project on Key Fields of Guangdong Universities(Rural Revitalization)(2020ZDZX1034).

摘　　要：This study was conducted to evaluate the influence of dietary lysophospholipids combined with 1%dietary fish oil reduction on the growth performance and hepatic lipid metabolism of largemouth bass(Micropterus salmoides).Five isonitrogenous feeds were prepared with lysophospholipids at 0%(fish oil group,FO),0.05%(L-0.05),0.1%(L-0.1),0.15%(L-0.15)and 0.2%(L-0.2),respectively.The dietary lipid was 11%in the FO diet and 10%in the other diets.Largemouth bass were fed for 68 d(initial body weight=6.04±0.01 g)with 4 replicates per group and 30 fish per replicate.The results showed that the fish fed diet containing 0.1%lysophospholipids had higher digestive enzyme activity and obtained better growth performance compared to the fish fed FO diet(P<0.05).The feed conversion rate in the L-0.1 group was significantly lower than that in the other groups.Serum total protein and triglyceride contents in L-0.1 group were significantly higher than those in other groups(P<0.05)and the contents of total cholesterol and low-density lipoprotein cholesterol in L-0.1 group were significantly lower than those in FO group(P<0.05).The activity and genes expression of hepatic glucolipid metabolizing enzymes in L-0.15 group were significantly increased compared to those in FO group(P<0.05).Reducing 1%fish oil along with 0.1%lysophospholipids added to the feed could improve the digestion and absorption of nutrients,enhance the activity of liver glycolipid metabolizing enzymes,and thus effectively promote the growth of largemouth bass.

关 键 词：Micropterus salmoides LYSOPHOSPHOLIPIDS GROWTH Low-fat diet Lipid metabolism 

分 类 号：S965.211[农业科学—水产养殖]