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

Abstract

The effect of concrete pond and net-cage culture systems on growth and haematological indices of the Siberian sturgeon (Acipenser baerii) were studied in a 90-day experiment. A total of 300 fish with a stocking density of 12.6 ± 0.37 kg/m 2 (initial average weight 1140 ± 53.8 g) were stocked in floating net-cages. Also, 276 fish with a stocking density of 12.6 ± 0.29 kg/m 2 and an initial average weight of 1097 ± 72.6 g were stocked in concrete ponds. Throughout the study, the average weight, mean length, and haematological parameters of the fish in each environment were recorded every 30 days. The fish in net-cages displayed higher growth rate (GR), specific growth rate (SGR), and body weight increase (BWI) as well as a lower food conversion rate (FCR) when compared to the fish in concrete ponds. No differences in the condition factor (CF) or survival rate (SR) were found in the trial. In terms of haematological parameters, there was no difference between the ponds and net-cages for the values of red (RBC) and white (WBC) blood cells, haematocrit (Hct), haemoglobin (Hb), MCV, MCH, MCHC, lymphocyte, monocyte, neutrophil, and eosinophil in the initial 30-day and 60-day sampling periods. In the 90-day sampling period, a statistical difference was found in the RBC, MCV, MCH, and WBC values between the ponds and net-cages. Furthermore, in the 90-day sampling period, no statistical difference was found in the Hct, Hb, MCHC, lymphocyte, monocyte, neutrophil, and eosinophil values. Consequently, the Siberian sturgeon culture in net-cages is advantageous to concrete ponds in regards to the growth parameters.

Effects of β-1,3/1,6 glucan dietary supplements on some immunological and hematological health markersin Siberian sturgeon ( Acipenser baerii) infected with Aeromonas hydrophila

“…Today, sturgeon breeding has become quite important due to the high commercial value of their eggs (caviar) and their meat (Duman 2020). Siberian sturgeon is recommendable as a potential species to increase species diversity in the Turkish aquaculture sector.…”

Does dietary inclusion of defatted yellow mealworm (Tenebrio molitor) affect growth and body composition of juvenile common carp (Cyprinus carpio)?

“…day)(Duman, 2020) where wf = final average weight at the end of the experiment (g); wi = initial average weight at the beginning of the experiment (g); t = experimental time in days.Weight gain (WG) = wf -wi (g) where wf = final total biomass (g); wi = initial total biomass (gconversion ratio (FCR) = 𝑊𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑓𝑒𝑒𝑑 𝑔𝑖𝑣𝑒𝑛 (𝑔) 𝑤𝑒𝑖𝑔ℎ𝑡 𝑔𝑎𝑖𝑛 (𝑔)(Duman, 2020) Survival rate (SR, %) = 100 x 𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑓𝑖𝑠ℎ 𝑠𝑢𝑟𝑣𝑖𝑣𝑒𝑑 𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑓𝑖𝑠ℎ 𝑠𝑡𝑜𝑐𝑘𝑒𝑑(Duman, 2020) Biometric and post-harvest indices were calculated as:…”