Evaluation of the effect of separate and combined effects of diet containing nanochitosan and folic acid on growth factors, survival and Carcass chemical composition of beluga sturgeon (Huso huso) fingerling

Samimi, Mahmood; Bahri, بحری; Mohammadizadeh, Flora

doi:10.22124/japb.2024.27664.1545

Evaluation of the effect of separate and combined effects of diet containing nanochitosan and folic acid on growth factors, survival and Carcass chemical composition of beluga sturgeon (Huso huso) fingerling

Articles in Press

Document Type : Research Paper

Authors

¹ Department of Fisheries, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran

² Department of Fisheries, Marine and Fisheries Technologies Research Center, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran

10.22124/japb.2024.27664.1545

Abstract

Improving formulated diets to enhance growth and promote the health of fish is a major issue in commercial aquaculture. This research was conducted to investigate the separate and combined effects of feed containing nano-chitosan and folic acid on growth factors, survival, and chemical composition of juvenile elephant fish carcasses. Juvenile fish with an average weight of 15.3 ± 1.56 g were distributed in 15 fiberglass tanks at a density of 25 fish per tank and fed with different concentrations of nano-chitosan and folic acid: 0 (control), treatment 1 (1 mg of chitosan per kg of feed), treatment 2 (1 mg of folic acid per kg of feed), treatment 3 (1 mg of chitosan + 1 mg of folic acid per kg of feed), and treatment 4 (2 mg of chitosan+1 mg of folic acid per kg of feed) over a period of 8 weeks. Based on the results, the daily growth rate, body weight gain, specific growth rate (SGR), feed conversion ratio (FCR), hepatic index, and status index in treatments 3 and 4 showed significant differences compared to treatments 1 (1 mg/kg nano-chitosan) and especially the control treatment. Significant differences in the condition factor were also observed between the control treatment and the other study treatments. Chemical composition analysis of the carcasses indicated that fish fed in treatment 3 had the highest crude protein content (16.76 ± 0.56) and the lowest crude fat (6.48 ± 0.18) and ash (3.07 ± 0.16) percentages, which differed significantly from treatment 1 and the control treatment. In conclusion, the use of feed supplements containing 1 and 2 milligrams of nano-chitosan along with a concentration of 1 mg of folic acid per kg of feed in the diet of juvenile beluga fish resulted in significantly positive effects on growth performance and chemical composition.

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