Study & Comparison of morphometric and meristic characters of the Nemipterus japonicus in litoral zone of Bushehr and Khark island

This Study was done in order to evaluate the effect of dietaryprebiotic yeast cell wall (Saccharomyces cerevisiae) so called (YCW) on growth indices of Acipenser nudiventris fingerlings. 240 cultural ship fingerlings weighted average number (± SD) 7.61 ± 0.01 g for 8 weeks were fed by four different diets including 0, 0.5, 1 and 1.5% YCW in basal diet in form of 4 treatments (following control, 1, 2 and 3). The treatments in twelve 500L fiberglass tank with density of 20 fish in each tank, in the form of 4 treatments with 3 replicates were randomly distributed. The results showed thatgrowth indices such as final weight, specific growth rate, average daily growth, feed convertion ratio in all treatments had no statisical significant differences in compared with the control (P>0.05). Hepatosomatic index in treatments fed by YCW was significantly higher than control (P≤0.05). Condition factor only in treatment 2 was significantly higher than control. Survival rate in all treatments was significantly higher than control. The experiment indicated that YCW didn’t influence ongrowth indices highly in Acipenser nudiventris.