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All Journal Indonesian Aquaculture Journal
Ludi Parwadani Aji
Technical Implementation Unit For Marine Life Conservation, Research Centre for Oceanography, Indonesian Institute of Science (LIPI), Jakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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THE EFFECT OF AERATION ON THE DISTRIBUTION OF MICROALGAE CONCENTRATE Ludi Parwadani Aji
Indonesian Aquaculture Journal Vol 6, No 2 (2011): (December 2011)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (126.389 KB) | DOI: 10.15578/iaj.6.2.2011.131-139

Abstract

Microalgae concentrates (paste) can be used as an alternative feed to replace live microalgae for aquaculture due to its nutritional value and convenience. However, the clumping of cells and negative buoyancy of algae concentrate can affect bivalve culture as bivalves only capture particles suspended in the water and ingest a certain size range of particles. This study investigated the effects of aeration on the distribution of algae particles in a 500 L rearing tank. The results indicated that the number of algae paste particles was higher in the aerated tanks compared to the non-aerated tanks over 24 hours. Time lapsed had a significant effect on the number of particles after the addition of algae concentrate into the tanks. The number of particles in the aerated and non-aerated tank was relatively stable from 1 to 10 hours and then declined after 24 hours. Furthermore, tank depth had no significant effect on the number of particles distributed as the number of particles did not differ significantly at three different depths within the culture tanks.
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