Dietary lipid levels affect growth performance, lipid metabolism, antioxidant and immune status of Amur sturgeon, Acipenser schrenckii

• DOI: 10.1016/j.aqrep.2023.101796
• Publication Date: 2023-10-31T14:24:29Z
• Authors: Yue Li; Wentong Li; Lin Luo; Yuanyuan Ren; Wei Xing; Guanling Xu; Tieliang Li; Min Xue; Huanhuan Yu; Zhengli Wu
• Keywords: Lipid Profile; Lipid Oxidation

The proper lipid content in the diets is crucial for fish growth and health. However, appropriate requirement of Amur sturgeon has not been systematically studied. This study was aimed to explore effects dietary levels on performance, metabolism, antioxidant immune status juvenile (Acipenser schrenckii). Six isonitrogenous containing 5.11% (L5), 8.87% (L9), 12.96% (L13), 16.93% (L17), 20.84% (L21) 24.88% (L25) were fed (4.16 ± 0.07 g) 10 weeks. L21 group had highest growth, feed utilization survival rate. Based broken-line regression analysis WGR, 20.31%. HSI, hepatic crude serum TG, TC LDL-C contents elevated significantly with increase lipid. Higher SOD, Anti-O2.- found group, while MDA both liver maintained an upward trend increase. expression fasn lpl suppressed when reached or exceeded 16.93%. While cpt1α pparα up-regulated, peaked but down-regulated L25 group. level il1β rise as increased, il10 tgfβ1 showed a downward high groups. In conclusion, based 20.31% diet optimal sturgeon. Low (5.11%−12.96%) (24.88%) decreased High induced excessive deposition, leading intense oxidative stress, metabolism disorder inflammation.