PRODUCTION OF WHITE LEG SHRIMP, Litopenaus vannamei BY APPLICATION OF BIOFLOC TECHNOLOGY ON INTENSIVE SHRIMP GROWOUT PONDS Muhammad Junda, Halifah Pagarra, Surachman Nur
Dept of Biological Science, Faculty of Mathematics and Natural Sciences, Makassar State University
Abstract
The objective of this study is to investigate the production of white leg shrimp, L vannamei by application of biofloc technology on intensive shrimp grow out ponds. This study was carried out on five of shrimp grow out ponds with different pond size and zero water exchange management strategy. These shrimps were reared with intensive systems such as shrimp seed post larvae (PL) 10, commercial feed, aeration with paddle wheels, mineral, vitamin and
molasses as well as floc-forming microbes and natural herb fermentation. Shrimp grow out ponds with condition as follows : water depth, 90 – 120 cm, feeding rate four times a day, aeration 24 hours in cultured period. Water quality indicators were measured ever day such as : survival rate, average daily gain, mean body weight, and feed conversion ratio. The results of this study showed that shrimp yield were 1,250 – 6,300 kg, growth rate such as : ADG, 0,32 –
0,40; survival rate 85 – 95 %; MBW 20, 23 – 27.30 and FCR = 1.10 – 1.20. Water quality parameters : pH = 7,2 – 9.5; salinity : 15 – 25 ppt ; temperature : 28 – 31 0 C; water depth : 90 – 120; tranparancy : 25 – 40; dissolved oxygen : 3.0 – 5.2; . In conclution, Application of biofloc technology with zero water exchange increased shrimp production significantly and water quality parameters were in range suitable for shrimp cultured growth.
Keywords: application biofloc technology, intensive production, Litopenaeus vannamei, zero water exchange.
