Effects of different biological feeds on the growth and the amino acids and fatty acids contents in the muscle of Mastacembelus armatus
An attempt was made to analyze the effects of biological feeds on the cultivation of Mastacembelus armatus.Bloodworms(Chironomidae),yellow mealworms(Tenebrio molitor),and superworms((Zophobas atratus)were added to the compound feed(CF)to feed Mastacembelus armatus and the fish growth and its contents of animo acids and fatty acids in muscle were observed and determined.The results showed that after 30 days of feeding,the fish body mass was significantly higher in the CF+superworms group than in the other three groups(P<0.05),with the lowest body mass observed in the control group without supplementation of any worms.After 60 days of feeding,the CF+superworms group still had a significantly higher fish body mass compared to the other three groups(P<0.05).Amino acid testing showed the total amino acids in the fish muscle were significantly higher in the CF+yellow mealworms group than in the other three groups(P<0.05).The CF+superworms group was significantly higher in flavor amino acids content than the other three groups(P<0.05).There were no significant differences in EPA and DHA levels among all the groups,but the contents of saturated fatty acids,monounsaturated fatty acids,and polyunsaturated fatty acids in the fish were all significantly higher in the CF+superworms than in the other three groups.The experimental results indicate that the feed for M.armatus added with super worms produced the best results in terms of weight gain,condition factor,and flavor amino acid content in the fish.
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