Akademik Veri Yönetim Sistemi
JOURNAL OF LIMNOLOGY AND FRESHWATER FISHERIES RESEARCH, cilt.10, sa.3, ss.171-186, 2024 (Hakemli Dergi)
This research explored the impact of dietary prebiotics on the growth performance of red swamp crayfish over two distinct 90-day trials (each with 3 replicates). In the first trial (initial weight: 0.085 g, 7 experimental groups), mannan-oligosaccharide (M0, M1, M2, M3) and fructo-oligosaccharide (F0, F1, F2, F3) were added at concentrations of 0, 1, 2, and 3 g kg⁻¹. The highest weight gain (WG) and specific growth rates (SGR) were recorded in the M3 group (WG: 8.05 g, SGR: 5.07) and F3 group (WG: 8.00 g, SGR: 5.06). Similarly, the M3 and F3 groups showed the most favorable feed conversion ratios (FCR) and survival rates (SR). In the second trial (initial weight: 0.087 g, 10 experimental groups), the combined use of MOS and FOS (M3+F3) delivered the best performance (WG: 8.82 g, SGR: 5.12, FCR: 1.29, SR: 93%), compared to the M1+F1 group (WG: 6.94 g, SGR: 4.86, FCR: 1.64, SR: 82%). While hepatopancreas tissues remained normal in all groups, the probiotic-supplemented groups exhibited significantly higher crude protein and lower fat content, total hemocyte counts, and intestinal bacteria counts compared to the control group (p<0.05). A combination of 3 g kg⁻¹ MOS and FOS is recommended to enhance crayfish farming productivity.