Authors : Maricela Flores , Fernando Diaz , Rebeca Medina , Ana Denisse Re and Alexei Licea
Abstract: The effect of dietary astaxanthin supplemented in 0, 40, 80 and 150 mg kg-1 (Diet A, B, C and D, respectively) on oxygen consumption, ammonium excretion, O:N atomic ratio and Osmoregulatory Capacity (OC), were evaluated in Litopenaeus vannamei acclimated to low-salinity water (3%). Oxygen consumption rate of 1.04 mg O2 h-1 g-1 d.w., ammonium excretion rate of 0.04 mg NH4+ h-1 g-1 d kg-1, O:N atomic ratio of 26.8 and OC of 240 mOsm kg-1 were significantly different in shrimp fed diet C compared with shrimp fed the other diets. These results indicated that dietary supplementation of diet C improved physiological responses in juveniles L. vannamei. We recommend the addition of dietary astaxanthin of 80 mg kg-1 in the pacific white shrimp cultured in low-salinity water.
Maricela Flores , Fernando Diaz , Rebeca Medina , Ana Denisse Re and Alexei Licea , 2008. The Effect of Dietary Astaxanthin on Physiological Responses of Juvenile White Shrimp Litopenaeus vannamei Acclimated to Low-Salinity Water. Journal of Fisheries International, 3: 75-82.