Optimum dietary protein requirement for Macrobrachium rosenbergii juveniles
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The dietary protein requirement of M. rosenbergii juveniles was determined in growth trials performed in indoor aquaria using rations based on fish meal and shrimp meal as the main sources of protein. Five protein levels from 20 – 40% at 5% interval were tested to assess the best growth. Mean body weights and lengths of 4 replicate treatments were subjected to analyses of variance in determining differences between protein levels. Results showed no significant differences in all variables consid ered. Under this laboratory feeding experiment, the prawns attained weights of 0.95 g (994% gain), 0.94 g (921% gain), 1.3 g (1417% gain), 0.95 g (996% gain) and 1.17 g (1263% gain) for 20%, 25%, 30%, 35% and 49% crude protein levels, respectively in 89 day-culture period. 1 Research sponsored by FAO/NACA under the Secondment for Young Scientists Program Bangkok, Thailand October 1985 - September 1986. 2 Research Associate - Southeast Asian Fisheries Development Center (SEAFDEC - AQD), Binan gonan Research Station, Binangonan, Rizal Philippines 3106.