Optimization of Dietary Ingredients Composition for Bronze Featherback, Notopterus notopterus
Optimization of Dietary Ingredients Composition for Bronze Featherback, Notopterus notopterus
P. Yuvarajan1*, P. Chidambaram2, R. Somu Sunder Lingam3 and Mahadevi1
ABSTRACT
Species diversification plays crucial role to increase an aquaculture production through adoption of novel candidate species and standardization of cultivation technology. The present study aimed to optimize the dietary ingredients composition for Bronze featherback, Notopterus notopterus. A 60-day feeding trial was conducted to standardize the dietary preference of bronze featherback based on its growth performance, digestive enzyme activity and haematological responses. In this study, four different combination of feed ingredients such as T1 (Fishmeal), T2 (silkworm pupae), T3 (shrimp head meal) and T4 (mixture) used for experimental diet preparation. About 450 fingerlings (8.36 ± 0.03 g/fish) were randomly stocked in the four treatments and one control, triplicate and fed twice a day. Weight gain and specific growth rate were significantly (p<0.05) increased in the T4 diet fed fish than T2, T3 and control, however no significant difference (p>0.05) was observed between T4 and T1. Among the treatments, fish fed with T4 diet showed better haematological responses through an increment of white blood cell count, red blood count, haemoglobin and haematocrit value. Higher lipase activity was found in the T2 diet fed fish followed by T1, T4, T3 and control group fish. No significant difference (p>0.05) was observed in the whole-body composition of fish among the treatments and control. The present study found T4 diet composition favours the growth performance of bronze featherback .
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