Effect of biofloc technology (BFT) on red tilapia larvae aquaculture
Article Sidebar
Main Article Content
Abstract
Biofloc technology (BFT) is environmentally friendly as it is based on limited water use and minimal effluent is released into the surrounding environment. In this study, we evaluated the survival, growth performance and water quality management of red tilapia fingerling (Oreochromis niloticus-mossambicus). Ten tilapia larvae (average individual weight 4.86 ± 0.01 g) were stocked in 50 liters aquarium. The experiment consisted of a control group with water exchange and two groups of BFT treatments (plankton rich water from catfish farm and tap water) with three replicates. Red tilapia larvae were fed with a 35-40% protein feed, 10% of body weight. They were cultured for 10 weeks. Molasses was added on BFT treatments as the organic carbon source at a C/N ratio ≥ 15. Water quality parameters such as pH, DO, NH3-N and NO2 ̄-N were tested. At the end of the experiment, water quality parameters were set in standard level. BFT treatments controlled access phytoplankton concentration (Chlorophyll a). Survival rate of fish cultured in BFT treatments were significantly higher than control group. Fish cultured in BFT treatment from plankton rich water had significantly highest mean final weight, average daily growth (ADG) and specific growth rate (SGR); 54.80 ± 0.19 g, 10.25 ± 0.02 g/day and 2.15 ± 0.01 % /day, respectively, while feed conversion ratio (FCR) was significantly lower than that in the control group. Fish fed on BFT treatments had significantly higher protein content than control group (P <0.05).
Article Details
References
วีระ ตั้งชวาล. 2545. เคมีของน้ำและการบำบัดน้ำเสีย. คณะวิทยาศาสตร์ มหาวิทยาลัยศรีนครินทรวิโรฒ, กรุงเทพฯ.
อุดมลักษณ์ สมพงษ์. 2558. คู่มือปฏิบัติการวิชา พล 312 คุณภาพน้ำสำหรับการเพาะเลี้ยงสัตว์นน้ำ. คณะเทคโนโลยีการประมงและทรัพยากรทางน้ำ มหาวิทยาลัยแม่โจ้ เชียงใหม่.
APHA, AWWA and WEF. 1998. Standard Methods for the Examination of water and Wastewater. United Book Press, Inc. Washington DC, USA.
AOAC. 1990. Official Methods of Analysis of the AOAC, 15th ed. Association of official analytical chemists. Arlington, VA, USA.
Avnimelech, Y. 2015. Biofloc Technology-A Practical Guidebook, 3rd ed. The World Aquaculture Society, Baton Rouge, Louisiana, USA.
Azim, M.E. and D.C. Little. 2008. The biofloc technology (BFT) in indoor tanks: Water quality, biofloc composition, and growth and welfare of Nile tilapia (Oreochromis niloticus). Aquaculture. 283: 29–35.
Boyd, C.E. and C.S., Tucker. 1998. Pond Aquaculture Water Quality Management. Springer Science Business Media, New York, USA.
Boyd, C.E. and C.S. Tucker. 2014. Handbook for Aquaculture Water Quality. Craftmaster Printers, Inc. Auburn, Alabama, USA
Correia, E.S., J.S. Wilkenfeld, T.C. Morris, L. Wei, D.I. Prangnell, and T.M. Samoch. 2014. Intensive nursery production of the Pacific white shrimp Litopenaeus vannamei using two commercial feeds with high and low protein content in a biofloc-dominated system. Aquacultural Engineering. 59: 48–54.
Crab, R., T. Defoirdt, P. Bossier, and W. Verstraete. 2012. Biofloc technology in aquaculture: beneficial effect and future challenges. Aquaculture. 356-357: 351-356.
El-Sayed, A.E.M. 2006. Tilapia Culture. CAB International, Oxfordshire, UK.
Gaona C. A. P., F. da P. Serra, P. S. Furtado, L. H. Poersch, and W. Jr. Wasielesky. 2016. Effect of different total suspended solids concentrations on the growth performance of Litopenaeus vannamei in a BFT system. Aquacultural Engineering. 72–73: 65–69.
ISO 10260. 1992. Water quality-measurement of biochemical parameters-spectrometric determination of the chlorophyll-a concentration. International Organization for Standardization, Geneva, Switzerland.
Martinez-Cordova L.R., M. Emerenciano, A. Miranda-Baeza, and M. Martinez-Porchas. 2014. Microbial-based systems for aquaculture of fish and shrimp: an updated review. Reviews in Aquaculture. 6: 1–18.
Rodrigo, S., A. Rafael, F.B. Manecas, F.S.C. Patricia, V.A. Luis, Q.S. Walter, and R. A Edemar. 2013. Use of artificial substrates in the culture of Litopenaeus vannamei (biofloc system) at different stocking densities: Effects on microbial activity, water quality and production rates. Aquacultural Engineering. 1676: 1-11.
Zhao, Z., Q. Xu, L. Luo, C. Wang, J. Li, and L. Wang. 2014. Effect of feed C/N ratio promoted bioflocs on water quality and production performance of bottom and filter feeder carp in minimum-water exchanged pond polyculture system. Aquaculture. 434: 442–448.
