The Addition of Superior Hetrotrophic Bacteria in Increasing The Growth of Saline Tilapia (Oreochrommis Niloticus)

Abstract

Aquaculture is one of the important types of economic businesses in Indonesia, this can be seen from the many people’s livelihood depend on aquaculture sector. This study aims to analyse the addition of superior heterotrophic bacteria to the growth of saline tilapia. The method used experimental method with a Completely Randomized Design (CRD) where four levels of treatment are carried out. The treatment given is the addition of feed. T0: Without the addition of heterotrophic bacteria. T1: Addition of heterotrophic bacteria isolates J. T2: Addition of heterotrophic bacteria isolates N. T3: Addition of heterotrophic bacteria combined isolates B, C, D, J, H, N.. The results showed that the highest absolute weight growth rate was found in treatment 3 or P3 of 6.09 g, followed by treatment 2 of 4.48 g, treatment 1 of 3.24 g, and the smallest in treatment 0 of 1.86 g. Graduation rate of fish life during the study was not influenced by the addition of heterotrophic bacterial isolates. The number of heterotrophic bacteria and water quality parameters were not significantly different from the addition of heterotrophic bacterial isolates. The addition of superior heterotrophic bacteria can increase the growth of Saline tilapia.