关键词: 发酵豆粕； 尖吻鲈； 抗氧化活性； 生长性能

Abstract: This study aimed to evaluate the antioxidant activity of water and alcohol extracts of soybean meal andwas better than that of soybean meal（P<0.05）. The weight gain rate，feed??gain ratio，hepatosmatic index，and meat?? fat ratio of dietary supplement with fermented soybean meal group were better than those of the control group，and 2.5% group was the best. fermented soybean meal，and its efffects on growth performance and feed efficiency of Lates calcarifere. For animal experiments，Lates calcarifer in 4 groups were fed the basal diet supplement with 0%（control group），0.5%，1.25%， and 2.5% fermented soybean meal，with 5 replicates per group and 10 fish per replicate. Natural light was used in feeding environment and the temperature was kept at 25~40 ℃，feeding twice daily（9:00 and 18:00）until full for 12 weeks. The results showed that DPPH scavenging rate of water extract and alcohol extract of fermented soybean meal

Key words: Fermented soybean meal； Lates calcarifer； Antioxidant Activity； DPPH scavenging rate Growth performance