Effect of bacteria probiotics on maintaining water quality in the super alkaline shrimp pond water
M Atmomarsono(1*), BR Tampangallo(2), Nurbaya(2), Kamaria(2)

1)Researcher, Center of Fisheries Research, National Research and Innovation Agency, Maros, South Sulawesi, Indonesia
2)Researcher, Research Institute for Coastal Aquaculture and Fisheries Extension (RICAFE), Maros, South Sulawesi, Indonesia

Abstract

This study was aimed at finding out whether bacteria probiotics could work properly in the super alkaline pond water. Eight extensive ponds of about 0.5 ha in size located in Lanrisang district of Pinrang regency were used in this experiment. After pond preparation, each pond was stocked with 20,000 pcs of tiger shrimp postlarvae. Parameters of the pond water quality and the bacterial count (total Vibrio and total bacteria) were monitored every two weeks and analyzed at the Research Institute for Coastal Aquaculture and Fisheries Extension Laboratory in Maros, South Sulawesi. Three bacteria probiotics applied here were Brevibacillus laterosporus BT951, Serratia marcescens MY1112, and Pseudoalteromonas sp Edeep-1 BL542. Treatments tested here were A) The powder-formed and B) The liquid-formed of those three bacteria probiotics. There were four replications in each treatment with a culture period was 75 days. The results showed that there were no significant effects of using a different form of probiotics on maintaining water quality since pond water pH sometimes increases up to 10.2 and Dissolved Oxygen often decreases to less than 2 mg L-1. Consequently, the production and survival rate of the cultured shrimp were much lower than those of the average South Sulawesi brackishwater ponds.

Keywords: Super alkaline water, probiotic, tiger shrimp, powder, liquid

Topic: Sustainable Aquaculture (International)