Survival at the end of the experiment was high
(98%) and unaffected by diets (Table 3). Final weight,
percent weight gain and feed intake of shrimp fed the diet containing 15% RCM were significantly higher
than those of shrimp fed either the control diet, the
RCM-5 or RCM-10 diets. The lowest feed conversion
ratio (FCR) was observed in shrimp fed diets RCM-10
and RCM-15 (1.40). This FCR was significantly
(Pb 0.05) better than that of shrimp fed the control
diet (1.54), whereas no difference was detected among
shrimp fed diets containing red crab meal (5%, 10% or
15% RCM). Protein efficiency ratios (PER) of diets
RCM-10 and RCM-15 were significantly higher than
that of the control diet. PER values were correlated with
growth (0.84, P =0.005) and feed intake (0.81,
P =0.007).