| Review on the use of macroalgae in aquatic nutrition |
| Paper ID : 1070-ICIAQUA |
| Authors |
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Saeed Dayani *1, Elahe Rohani2 1Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resou.rces, Gorgan, Iran 2Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. |
| Abstract |
| The aquatic plant breeding industry, especially seaweed, is growing rapidly. Currently, these algae are cultivated in 50 countries of the world, and among the cultivated aquatic groups, seaweed has the largest share. Considering the importance of the ornamental fish industry and nutrition in aquaculture activities, to increase production and economic justification in aquaculture, it is really necessary to use food rations with maximum efficiency and reduce feeding costs; Therefore, it is useful to use stimulants such as algae as a supplement in the diet of aquatic animals. Macroalgae contain high amounts of protein, vitamins, minerals, all essential amino acids and polyunsaturated fatty acids with multiple double bonds, such as arachidonic acid, (EPA) and (DHA). Algae also have natural compounds with antioxidant potential including polyphenols, polysaccharides, carotenoids, tocopherols, terpenes, ascorbic acid and alkaloids. Despite the low level of total fat, a large proportion of these fat sources include unsaturated fatty acids, which are necessary for the growth and development of aquatic animals, especially during the larval and juvenile stages. Improved growth, food consumption, liver function, fat metabolism, physiological activities, stress responses, disease resistance and meat quality have been reported in diets containing macroalgae. Also, in some reports, they have recommended a mixture of macroalgae in the diet instead of using one type of macroalgae, which results in improved growth performance and better taste of fish. Algae can also be used as a substitute for fish meal. The use of macroalgae in fish diets may improve growth performance and feed efficiency without adverse effects on liver enzyme activity and blood indices. Despite the high nutritional value of algae and its positive effects on aquatic health, it should be said that algae have certain challenges and precautions should be taken before using them in aquatic or human diets. |
| Keywords |
| macroalgae , aquatic , Antioxidants , Unsaturated fatty acid , diet |
| Status: Abstract Accepted (Poster Presentation) |