The Use of Indigenous Probiotic Halomonas aquamarina and Shewanella algae for White Shrimp (Litopenaeus vannamei Boone) Hatchery Productivity in Zero Water Discharge System

This research was aimed to improve the performance of white shrimp postlarvae culture through the application of indigeneous probiotic bacteria, Halomonas aquamarina and Shewanella algae in zero water discharge system. The research was conducted by following two consecutive steps: (1) pathogenicity test of both probiotic in white shrimp culture, and (2) probiotic effect test to water quality and vibriosis syndrome control. From the first step, the use of probiotics had no pathogenocity effect to shrimp PL since survival rate of 84-98% was documented. From step two, the application of both probiotic bacteria was able to inhibit the population growth of V. harveyi in which the highest survival rate of 93.94% obtained from H. aquamarina addition, followed by S. algae addition (92.12%), H. aquamarina: S. algae addition (90.60%), S. algae: V. harveyi addition (89.39%), H. aquamarina: S. algae: V. harveyi addition (87.87%), H. aquamarina: V. harveyi addition (87.57%), no addition of bacteria (84.84%) and V. harveyi addition (82.42%).