INCREASED STOCKING DENSITY OF GIANT FRESHWATER PRAWN (Macrobrachium rosenbergii, de Man 1879) POSTLARVAE IN HAPA NETS WITH DIFFERENT SUBSTRATE POSITIONS

Dominador F. Bacalso, Jr.

Abstract


Decapod crustaceans is vulnerable to different environmental fluctuations. Thus, a variety of farming systems have been made by shrimp growers to solve these problems. This study assessed the survival, growth rate and interaction effect of stocking density and substrate positions of giant freshwater prawn (Macrobrachium rosenbergii, de Man 1879) postlarvae when cultured in experimental framed hapa net installed in pond for 90 days. Three stocking densities were used in different substrate positions in 3 replicates stocked in 27 framed hapa nets. Results revealed lowest stocking density apparently showed better growth and bigger prawns compared to higher stocking density. Further, the mean growth of the commodity, size class distribution were significantly influenced by the stocking density. Survival rate, on the other hand, favored lower stocking density. No interaction effect among treatments was observed. Feed Conservation Ratio (FCR) improved with low stocking density. Moreover, densities of 20 pieces/m3 favored the better growth and survival rate of M. rosenbergii even with or without substrates. Shorter culture period affected the production yield.

Keywords


framed hapa net culture, giant freshwater prawn, Macrobrachium rosenbergii

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References


Corre, V. (1993). The shrimp farming industry in the Philippines. In C.T. Villegas, M.T. Castaños, & R.B. La (Eds.) Proceedings of the Aquaculture Workshop for SEAFDEC/AQD Training Alumni, 8-11 September 1992, Iloilo, Philippine. Tigbauan, Iloilo, Philippines Southeast Asian Fisheries Development Center, Aquaculture Department.

Cuvin-Aralar, M.L., Aralar, E., Laron, M. & Rosarion, W. (2007). Culture of Macrobrachium rosenbergii in experimental cages in a freshwater eutophic lake at different stocking densities. Aquatic Research, 38 (3), 288-294.

Fernandez, R. (2002, September 22). Fishfarmers join hands to save shrimp industry. The Philippine Star. Retrieved from http: www.philstar.com.agriculture/176971/fishfarmers-join-hands-save-shrimp industry.

Nair, K., Branislav, M., Rosenthal, H., Jayalakshmi, K. and Nost, J. (1996). Experimental studies on the cannibalistic habit of Macrobrachium rosenbergii (de Man). The Fourth Indian Fisheries Forum Proceedings, Kochi, 227-232.

New, M.B. (2002). Farming freshwater prawns: A manual for the culture of the giant freshwater prawn (Macrobrachium rosenbergii). Food & Agriculture Organization of the United Nations, Rome.

New, M.B., (1995). Status of freshwater prawn farming: A Review. Blackwell Science.

New, M.B. (1988). Freshwater prawns: status of global aquaculture. Bangkok, Thailand: Network of Aquaculture Centers in Asia, 58 p.

Smith, T. and Sandifer, P. (1975). Increased production of tank reared Macrobrachium rosenbergii through use of artificial substrates. Proceedings of the 6th Annual Meeting, World Mar. Soc., 55-56.


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