Effect of the concrete pond and net-cage culture systems on growth performance and haematological parameters of Siberian sturgeon (Acipenser baerii)

2020 Turk veterinerlik ve hayvancilik dergisi  
The effect of the concrete pond and net-cage culture systems on growth and 3 hematological indices of the Siberian sturgeon (Acipenser baerii) were studied in a 90-4 day experiment. A total of 300 fish with a stocking density of 12.6 ± 0.37 kg / m 2 (initial 5 average weight 1140 ± 53.8 g) were stocked in floating net-cages. Also, fish with an initial 6 average weight of 1097 ± 72.6 g were stocked in concrete ponds (stocking density 12.6 ± 7 0.29 kg / m 2 , n = 276). Throughout the study, the
more » ... erage weight, the mean length, and 8 haematological parameters of the fish in each environment were recorded every 30 days. 9 The fish in net-cages displayed a higher growth rate (GR), a specific growth rate (SGR) 10 and body weight increase (BWI) as well as a lower food conversion rate (FCR) when 11 compared to the fish in concrete ponds. No differences in the condition factor (CF) and 12 survival rate (SR) were found in the trial. In terms of haematological parameters, there 13 was no difference between the ponds and net-cages for the values Red (RBC) and white 14 (WBC) blood cell, hematocrit (Hct), haemoglobin (Hb), MCV, MCH, MCHC, 15 lymphocyte, monocyte, neutrophil, and eosinophil in the initial 30-day and 60-day 16 sampling periods. In the 90-day sampling period, a statistical difference was found in the 17 RBC, MCV, MCH, and WBC values between the ponds and net-cages. Furthermore, in 18 the 90-day sampling period, no statistical difference was found in the Hct, Hb, MCHC, 19 lymphocyte, monocyte, neutrophil and eosinophil values. Consequently, the Siberian 20 sturgeon culture in net-cages has advantageous than in concrete ponds regarding the 21 growth parameters. 22
doi:10.3906/vet-1910-41 fatcat:ennohghzpfbjnoxce2tsvlpafu