INSTITUTE FOR WATER AND WASTEWATER TECHNOLOGY
IWWP
ENHANCED FISH FEED FOR AQUACULTUREINDUSTRY

In commercial feed for aquaculture, plant based feeds are used to accomplish all basic nutrient (protein, amino acids, vitamin, minerals etc.) requirements. Fish meal is a good source of all nutrients in balanced format for use in fish feed. However due to high cost of fish meal, lower percentages are used in feed formulation processes. These are usually not enough to accumulate important supplements for human diet specifically n-2 LCPUFA from fish, whose recommended daily intake is 140 to 667 mg/day as specified by many government and health organisations.

Microalgal biomass contains several important biochemical constituents such as lipids, proteins, carbohydrates and various types of pigments. They are also a major feed sources for fishes in their natural habitat. Microalgae are an important food source and feed additives in the commercial rearing of many aquatic animals, especially fishes and prawn larvae. Algae represent a valuable source of nearly all essential nutrients, including PUFA (Polyunsaturated Fatty Acid), vitamins and minerals. Carotenoids and many other pigments which are important for defence mechanism against diseases cannot be synthesized by most animals, including fish, and must be obtained from dietary sources.

Algae can be used directly as live culture or as value added feed supplement. The formulated enhanced fish feed using microalgal supplementation should satisfy the nutritional requirements of the fishes with the high acceptability of the feed. Scientific investigation of microalgae for their nutritional content and its impact on the fish health and quality for human consumption is required in order to quantify the outcome of the microalgal addition.

To find out more about this project download our CASE FOR SUPPORT booklet.

Budget
R1 166 077.00
Case for Support

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