Effects of Fermented Black Solider Fly(Hermetia illucens L.)on Growth Performance,Body Composition,Antioxidant and Immune Ability of Hybrid Snakehead
[Objective]This experiment was conducted to investigate the effects of adding fermented Black Solider fly(Hermetia illucens L.)in feed on growth performance,body composition,serum biochemical indexes,and antioxidant and immune ability of hybrid snakehead(Channa maculate ♀× Channa argus ♂).[Method]A total of 1 920 hybrid snakehead with an initial weight of(5.88±0.01)g were randomly divided into 6 groups with 4 replicates per group and 80 fish per replicate.Hybrid snakehead were fed 6 experimental diets supplemented with 0(G0 group,as control group),2％(G2 group),4％(G4 group),6％(G6 group),8％(G8 group)and 10％(G10 group)of fermented Black Solider fly wet matter for 56 days,respectively.At the end of experiment,the weight,quantity,and food intake of hybrid snakehead in each net cage were counted to calculate their growth performance.Six hybrid snakehead were randomly selected from each pet for body composition analysis.Blood was collected from the caudal vein of sampled hybrid snakehead to separate serum for determination of serum biochemical and serum antioxidant and immune indicators.Liver were collected from sampled hybrid snakehead for determination of antioxidant and immune indicators.[Result]Compared with G0 group,the final body weight,weight gain rate,specific growth rate in G2 to G8 groups were significantly increased(P＜0.05)and feed intake was significantly increased in G4 group(P＜0.05).The feed coefficient rate was significantly decreased(P＜0.05)and survival rate was significantly increased in G6 and G8 groups(P＜0.05)).There were no significant differences in condition factor,viscerosomatic index and intestosomatic index among groups(P＞0.05),and patosomatic index was significantly decreased in G2,G4,G6 and G10 groups compared with G0 group(P＜0.05).The contents of moisture,crude protein,crude lipid,ash,calcium and total phosphorus were not significantly different in whole body of hybrid snakehead among groups(P＞0.05).There was no significant difference in serum total protein,glucose,cholesterol,urea nitrogen contents and alanine transaminase and aspartate transaminase activities among groups(P＞0.05),and the serum triglyceride content was significantly decreased in G2 to G10 groups compared with G0 group(P＜0.05).Compared with G0 group,the serum total antioxidant capacity in G2 group was significantly increased(P＜0.05)and the activities of peroxidase and superoxide dismutase in liver were significantly increased in G2 to G8 groups(P＜0.05),and the serum lysozyme activity was significantly increased in G2 to G10 groups(P＜0.05).[Conclusion]Fermented Black Solider fly could significantly improve growth performance,decrease patosomatic index and the serum triglyceride content,and increase antioxidant and immune ability of hybrid snakehead.The appropriate addition levels of fermented Black Solider fly in feed for hybrid snakehead were 2％-8％.
fermented Black Solider flyhybrid snakeheadgrowth performancebody compositionserum biochemical indexes
万方数据
维普
