The effects of ethanol turmeric
extraction on the percentage survival and growth
rate of white shrimp were examined using different
feeding levels of ethanol turmeric extract. The
results showed that there was no significant (P >
0.05) difference in the percentage survival rate and
water quality. However, the percentage of average
daily growth and weight gained were significantly
(P < 0.05) higher with feed that contained turmeric
at 7.5 and 15 g/kg feed when compared with the
control. The efficacy of ethanol turmeric extract
as an immunostimulant for white shrimp was
indicated by increases in the total hemocyte count,
phenoloxidase activity and bactericidal activity as
the level of ethanol turmeric extract in the feed
increased. The highest amount of ethanol turmeric
extract in feed was 15 g/kg feed. It was found that
the effect of ethanol turmeric extract at the rate of
15 g/kg feed on the survival rate of white shrimp
immerged with Vibrio harveyi was significantly
(P < 0.05) higher than the control group. The
results indicated that ethanol turmeric extract has
high potential for its inhibitory effects with some
Vibrio spp. of shrimp. Therefore, this study
provided more information on the inhibitory
effects of ethanol turmeric extract, which can be
used in the study of potentially useful sources of
antimicrobial compounds.