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Determination of Microbial Composition in Different Volume of Biofloc<br />

Muhammad Fadhli bin Mat Sobri<br />

Supervisor: Dr. Nor Azman Kasan<br />

Bachelor of Applied Science (Fisheries)<br />

School of Fisheries and Aquaculture Sciences<br />

The increases demands on aquaculture industries leading to increase uses of biofloc<br />

technology. With the introduction of new inventions of rapid biofloc, the effectiveness<br />

of biofloc increases due to decrease in time to produce matured biofloc. This study<br />

aimed to determine the bacterial composition in different biofloc volume. This<br />

experiment started after the biofloc in the tank are matured with difference biofloc<br />

volume, i.e. 2, 4, and 6 ml/L, and the control are 0ml/L. The sample was taken every<br />

week for 1 month in each tank for bacteria counting. The bacteria numbers found on<br />

every biofloc tank were from 200 CFU/15 ml to 800000 CFU/ 15 ml. The study found<br />

out that the number of harmful bacteria will decrease if the good bacteria thrived<br />

based on 4 ml biofloc volume tank. The best biofloc volume for fish and shrimp culture<br />

is 4 ml which has the lowest harmful bacteria.<br />

602 | UMT UNDERGRADUATE RESEARCH DAY 2018

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