Effects of Different Carbon Sources on Growth and Some Innate Immune Responses of Russian Sturgeon (Acipenser gueldenstaedtii) in Biofloc Systems

Authors : İrfan Selçuk YAZICI, Selçuk BERBER, Tuna ÖZCELEP

Pages : 162-171

Doi:10.33714/masteb.1229189

View : 34 | Download : 46

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :The Russian sturgeon insert ignore into journalissuearticles values(Acipenser gueldenstaedtii); species is in high demand owing to its valuable caviar. Therefore, it is in danger of extinction. Since the Russian sturgeon reaches sexual maturity late in its life cycle, this species has a high economic cost for farmers. However, this high cost can be reduced with an environmentally friendly system called biofloc technology. This study compared the growth performance and health indicators of biofloc groups using different carbon sources such as starch insert ignore into journalissuearticles values(BS);, molasses insert ignore into journalissuearticles values(BM); and dextrose insert ignore into journalissuearticles values(BD);. In the 60-day study, fish with an average initial weight of 106.44±5.79 g were stocked in tanks at a density of 21 fish/tank insert ignore into journalissuearticles values(0.4 m3/tank);. The water temperature was set at 19 ℃ degrees throughout the study. On the 30th and 60th days of the experiment, fish were weighted to measure the growth parameters and sampled for immune indices. No mortality was observed in any group throughout the study. A between group comparison of weight gain revealed that BS and BM insert ignore into journalissuearticles values(105.51±2.26; 100.50±2.18); performed better than the control insert ignore into journalissuearticles values(BC, without external carbon sources); and BD groups insert ignore into journalissuearticles values(95.90±2.09; 87.36±2.18); insert ignore into journalissuearticles values(P<0.05);. Furthermore, FCR and SGR were calculated from the data obtained at the end of the experiment, and the data shows that the BS and BM groups were statistically more effective than the other groups. Moreover, a comparison of NBT, lysozyme and myeloperoxidase enzyme activities indicated that all BFT groups had a stronger immune system than the control group insert ignore into journalissuearticles values(P<0.05);. According to the results, the immune-enhancing effect of BFT for sturgeon was determined, and it was reported that BS and BM are more suitable for use in this species in terms of FCR and SGR, as they result an economic and environmentally friendly production.
Keywords : Aquaculture, Biofloc, Sturgeon, Fish