The effect of hot water extract of seaweed Sargassum angustifoliom on body Composition parameters in Rainbow trout (Oncorhynchus mykiss)
Document Type : Original Article
Authors
1 Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj
2 Department of Fisheries, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Sari
Abstract
The use of a variety of growth promoters in the diet can be beneficial to improve fish farming performance. The effect of different levels of aqueous extract of algae was studied on body quality in rainbow trout (Oncorhynchus mykiss) with a mean weight of 41.4±19.19 g for 8 weeks. In this research, the algae of Sargasum angstylellium were extracted from the tidal zone of Bushehr and the operation of 100 grams of algae powder in 5 liters of hot water was extracted. Algae extract was added to diet at 5 different levels, zero (control), 50 mg, 100 mg, 200 mg and 400 mg. 2% dietary feed weight was carried out during breeding and twice a day. After 56 days of breeding, the results of carcass analysis showed that protein and carcass ash had no significant difference compared to the control group. The fat content had a significant increase compared to the control group. Also, the body moisture content was significantly increased in the 200-mg group compared to other groups. The study showed that the addition of algae extracts of 400 mg had positive effects on carcass biochemical compositions.
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