تاثير نسبت هاي مختلف اسيدهاي چرب غيراشباع n/3n6 بر شاخص هاي رشد ميگوي سفيد هندي PENAEUS INDICUS, MILINE,EDWARDS در مرحله جواني

Effect of varying ratios of n3/n6 PUFAs on the growth performances of white Indian prawn (Penaeus indicus, Miline, Edwards) in the juvenile stage

10 experimental and one control (Chineh 404) diets were used to determine the effects of varying levels of n3/n6 PUFAs on the growth and food efficiency of the white indian prawn (P. indicus) juvenile (3-4g). 5 levels of n3n6 were adjusted using mixture of soybean oil (SOB) and one of two fish oils (cod liver oil or kilka oil) for each 5 diets. The rearing period was 2 months and the results showed the two treatments with 0.5 and 1 (with CLO) of n3/n6 ratios had significantly height efficacy (p = = 0.05) than the other treatments. n3/n6 levels of 1 and 0.5 showed significantly (p==0.05) higher effect than the other levels without taking the oils kind in to account. Although the effect of CLO on the growth and FCR was higher than of KKO but the different between two oils was not significantly high (p=005) . Also results showed temporary good effects for some treatments and n3/n6 levels that might reflect the fluctuation of biological and physiological characteristics of shrimp life. Each short of life period may needs own itʹs diet to meet the special biological requirements. This aspect needs more investigations.