Efecto de la adición de ácidos biliares en la sobrevivencia y crecimiento en el cultivo semi-intensivo de camarón (litopenaeus vannamei)

Abstract

This study was conducted to investigate the effects of adding bile acids to the diet on growth rate, nutrient utilization by the hepatopancreas and survival of Pacific white shrimp, Litopenaeus vannamei. First, a commercial diet with 35 % protein was used, in which bile acids were added at inclusion rates of 2 (BA2), 4 (BA4) and 0 (TC) g/kg. These diets were fed to shrimp with an initial weight of 1.0 ± 0.01 g, which were fed for 49 days. The results showed significant differences in growth among all treatments (p < 0.05). The addition of bile acids to the BA2 diet tended to increase weight gain, lipid content in hepatopancreatic tubules and survival (p < 0.05). Feed conversion rate was different in all treatments, with a lower FCR with the 2 g/kg dose (BA2). Regarding lipid concentration in the hepatopancreas, there were better levels of lipid presence with respect to the addition in doses of 2 g of bile acids in the feed. In addition, the supplementation with 4 g/kg of bile acids did not have greater benefits in terms of survival in relation to the treatment with 2 g/kg. In conclusion, the addition of 2 g/kg of bile acids to the diet during culture could improve growth and nutrient utilization by white shrimp.