Abstract
Effects of different types of lipids enriched supplemental diets containing 1% docosahexaenoic acid (DHA), 1% Phospholipids, 5% Cod liver oil and 1% Cod liver oil and live feed (Tubificid worms) on growth indices and survival of Colisa fasciatus fry were observed. The experiment was conducted in triplicates with a control for 50 days following randomized complete block design (RCBD). The water quality parameters were monitored and found to be within suitable range for freshwater aquaculture. After ending the trial period, significant variations (P<0.05) were observed on the survival and specific growth rate of fry among all the treatments. These results indicate that there are significant variations among different lipids on performance of fry and DHA showed the highest performance regarding growth indices and survival (in close proximity to live feed) among all the biofunctional lipids as an ingredient of supplemental diet.
Highlights
Fish farming has been the fastest growing sector of animal food production in the world since 1970
The overall fatty acid content of total lipids in the dietary ingredients were not determined in this experiment due to administration of same supplemented diet other than specific lipids was provided and the main purpose of the experiment was to monitor the effects of different dietary lipids on growth performances of C. fasciatus fry
The growth indices of fry varied significantly among different dietary lipids fed to the fry (Table 3)
Summary
Fish farming has been the fastest growing sector of animal food production in the world since 1970. The striped gourami, Colisa fasciatus is a common species under the family Osphronemidae found in Asia. It is, a dual purpose fish in that it has delicious taste, thereby, meeting the nutritional requirements of peoples and it has ornamental values for aquaria [2]. The fish is omnivore in nature ; it is easy to feed on live, frozen and flake feeds [2]. In the past, this species was readily available in freshwater pools, ditches, ponds, marshes, rivers as well as lakes with vegetation. At present C. fasciatus is under ‘Lower Risk-near threatened’ category is not listed in the IUCN Red Data Book [3] and is a high-priced fish [4]
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