The aim of this study was to evaluate the barley residue in the development of practical diets in relation to nutritional quality, growth and survival of the shrimp Litopenaeus vannamei. Five isoenergetic and isonitrogenous diets were prepared with different proportions of barley flour and corn meal (R1, R2, R3, R4 and R5) and a commercial ration (R6). They were provided to 150 shrimps for a period of 60 days. The percentage of barley meal used in feed was 0.62, 12.5, 18.7 and 25% replacing the initial meal maize of 25%. Shrimps with initial weight of 3g were distributed into 30 aquariums (five aquariums per shrimp) with 31L of water. The flour produced was analyzed for the evaluation of its nutritional quality, giving a yield of 22.63%. Survival ranged from 88 to 100% and didn't show any significant difference. The R1 and R5 diets resulted in greater weight gain, while R3 showed lower weight gain. The R1 (3.47g/60 hours), R2 (3.22g/60 hours), A4 (3.46g/60 hours) and R5 (3.62 g/60 hours) growth rate showed significant values, but were not statistically different (P>0.05). The barley flour in place of maize meal is recommended to provide greater growth in juvenile shrimp Litopenaeus vannamei species.
Litopenaeus vannamei; income; composition and growth
