NUTRITION IN JUVENILE MACROBRACHIUM-CARCI NUS (CRUSTACEA, DECAPODA) FED VEGETABLE AND MARINE LEFTOVERS

Juvenile prawn Macrobrachium carcinus were fed two different diets: re staurant by-products (diet I) and fish and vegetable market by-product s (diet II). These diets were evaluated by proximal analysis, assimila tion efficiency and the factor conversion rate (FCR). Diet I registere d a higher efficiency, but there was no difference in the growth rate. The growth mean (G.L.) for three months was 0.254+/-0.13 cm (diet I) and 0.191+/-0.1 cm (diet II). The conversion rate was good for both, s uggesting that 6 to 7 kg of food are needed to obtain 1 kg of prawn. S urvival was 76 % and 100 % for diets I and II, respectively.