Splitting the recommended weekly dosage of bioaugmentation agent and applied at varying frequencies
were tested to determine its effects on water quality and phytoplankton stability in tiger shrimp
(Penaeus monodon) grow-out ponds. The supplier’s recommended weekly dosage was followed but at
varying application frequencies namely: once per week, twice per week, and four times per week for the
duration of 120 culture days. A treatment with no bioaugmentation was added as control. Results
showed that ammonia and particulate organic matter levels were significantly lower and plankton dieoff
was greatly minimized if the product was applied four times a week application compared with twice
a week and weekly applications. Significant reduction in the number of luminous Vibrio species was
observed in ponds with more frequent applications than those with less. For shrimp, survival and
production were significantly higher in ponds with twice and four times per week applications
compared to the weekly application and the control (P < 0.05). Results of this study indicate that
splitting the weekly dosage of bioaugmentation agent and applying it four times per week is highly
beneficial and ideal for shrimp culture