The Utilization of cassava dregs fermentation to accelerate biofloc formation in the white shrimp (Litopenaeus vannamei) culture
M Syaichudin (a*), Rahmi (b), Akmal (a), H Batubara (a), Y Mundayana (a), A Gafur (a), Hamzah (a), Faridah S (a), Lideman (a), Jumriadi (c), Supito (d), Sadat (c), S Sujaka (c), I Sudrajat (a), Arfandi (a)

(a) Research Center for Fishery, Research Organization for Earth Sciences and Maritime, National Research and Innovation Agency, Cibinong, Bogor 16911, Indonesia.
(b) Aquaculture Study Program, Faculty of Agriculture, University of Muhammadiyah Makassar, Makassar 90221, Indonesia
(c) Brackishwater Aquaculture Development Centre, Takalar 92254, Indonesia
(d) The Main Centre For Brackishwater Aquaculture Development, Jepara 59418, Indonesia

Abstract

Cassava dregs is a byproduct of processing cassava into tapioca, through fermentation the carbohydrate structure will be simpler and possible as an essential carbon source. This resaerch aims to examine the utilization of cassava dregs fermentation/CDF in accelerating of the biofloc formation in white shrimp (Litopenaeus vannamei) culture. This research was carried out in two plastic ponds with 900 m2, where in treatment A with CDF and 200 indv/m2 and B without CDF and 300 indv/m2 for 60 days observation. Result of this research, the CDF in treatment A can accelerate the formation of biofloc at DOC 26 meanwhile in treatmen B at DOC 38. The weight growth at treatment A averaged 6.21g/indv while B averaged 6.21 g/indv. The Survival Rate/SR was significantly different, where in A was 99.1% and B was 75.3%. The SR level in A is thought to be due to the faster formation of biofloc. Feed convertion ratio respectively in treatment A and B were 1.4 and 1.49, with a total biomass of A 1,153 kg and B 1.263 kg. The final conclusion can be stated that the application of CDF in Biofloc Technology can increase the shrimp culture productivity.

Keywords: cassava dregs fermentation, biofloc technology, shrimp culture

Topic: Sustainable Aquaculture and Fisheries