Friday, February 5, 2010

FEASIBILITY OF POLYCULTURE OF RED TILAPIA Oreochromis sp. AND THE FRESHWATER PRAWN Macrobrachium americanum

FEASIBILITY OF POLYCULTURE OF RED TILAPIA Oreochromis sp. AND THE FRESHWATER PRAWN Macrobrachium americanum

Humberto Rojo Cebreros, Apolinar SantamarMiranda, Marcelo GarcMarcelo, Hervey Rodr

*CIIDIR-Sinaloa, Instituto PolitNacional. Boulevard Juan de Dios BParedes 250, Guasave, Sinaloa 81101, Mhrodriguezg@ipn.mx . Parameters of water quality (temperature, oxygen, ammonium, chlorophyll a, nitrites and nitrates) and production variables [weight, survival, day weight gain (DWG), standard growth rate (SGR) and muscle quality] were recorded by exterminating the feasibility of polyculture of red tilapia Oreochromis sp. and fresh prawn M. americanum. Three densities of tilapia (4, 9 and 14 org m-2) and one density of freshwater prawns (5 org m-2) were evaluated in triplicates using 1,000 liter circular tanks

Results indicate no statistical differences in water quality between treatments (p>0.05). There was not influence of the presence of prawn in the tilapia production variables (Table 1). Final weight of tilapia in the experimental was similar to those describes by other authors. The highest prawn survival was found at 5:14 (prawn/tilapia density). There were no statistical differences between treatments in tilapia quality muscle (proximate composition: protein, lipids and carbohydrate). Production variables allow us to consider polyculture of the red tilapias Oreochromis sp. with the M. americanum feasible. Implications of the best density of sowing will be discussed



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