-Collect and process data:
data collection conducted reviews of growth, survival rate: the national stage bringing up fish breeding; check the monthly growth in commercial fish farming by catching 30 random baby/fish to balance the volume. End stage of commercial farming, the fish is harvested and determined the survival rate. The determination of the daily growth rate (DWG) and survival rate according to the following formula:
DWG = total volume increase/total days
survival rate (%) = total fish harvest, the total number of fish stocked
after earning figures are conducting analysis of descriptive statistics and error analysis (ANOVA), the level difference (T-test and LSD) with significant levels of P < 0,05 on Excel software.
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