author(s)
D Pamanna, D Ravindra Kumar Reddy, TV Ramana, A Chandrasekhara Rao, O Sudhakar, K Madhavi, A Srinivasa Rao and G Ganesh

abstract
The importance of the present study, to evaluate to identification of the efficient mineral diet plays the role on growth of L. vannamei in low salinity. The shrimps were exposed to different concentration of minerals supplemented trough diet. The experiment was conducted in wet laboratory of College of Fisheries Science for a period of 28 days with five treatments and each treatment triplicate in 0.6x0.3x0.3 m size plastic tubs. The Litopenaeus vannamei were fed with four diets containing Ca 0.2% (D_Ca), Mg 0.02% (D_Mg), K 1% (D_K) and Na 1% (D_Na) individually and control diet without addition of extra minerals. The highest average body weight gain (AWG) of 5.30±0.04 g, the highest specific growth rate (SGR) 3.06±0.01 and lowest feed conversion ratio (FCR) 1.28±0.01was recorded in the treatment contained 1% K in diet (D_K) than control. There is significant (p<0.05) difference in AWG, SGR and FCR for L. vannamei fed with various levels of minerals incorporated diets compared to control diet fed group.