Abstract：Chinese shrimp Fenneropenaeus chinensis juveniles were cultured in experimental ecological tanks,and fed the diets containing different proportions of fly maggot Musca domestica to study the effects of dietary fly maggots on the growth performance and body compositions in the shrimp for 35 days. The results showed that there was enhancement in body length,body weight,specific growth rate and survival with increase in the dietary fly maggots. Similar cases were also found in the total quantity of hydrolytic amino acids as well as essential amino acids,and the taste amino acid content in the shrimpmuscles. The shrimp had significantly higher growth when they fed the diets containing 3/8 or more fly maggots (P<0.05). The contents of ∑n-3 HUFA and ∑n-6 HUFA in the shrimp muscles were found to increase with the increase in the proportion of the fly maggots in the diets. There were significantly lower contents of the essential fatty acids and higher polyunsaturated fatty acids in the muscles of the shrimp fed the fly maggots than those in the shrimp in the control group (P<0.05). Furthermore,the ratio of C22∶6n-3/C18∶2n-6 was found significantly higher in the muscles of the shrimp fed the fly maggots than that in the control group,the values being enhancement with increase in the contents of the fly maggots.
