The influence of colored light and tank color was investigated on growth performance (body weight, rate, carcass composition, etc.) physiological status (blood plasma parameters) beluga (Huso huso) juveniles. study conducted using 64 specimens for treatments with initial weight 98.83 ± 1.42 (mean SE) g which were reared under white, red, green blue 80 98.50 1.24 in green, black tanks, all 12 weeks. Red had a significantly negative impact (in contrast light) accompanied reduced liver total...

The effect of time-dependent protein restriction (PR) and refeeding were investigated on growth, body composition, fatty acids (FA), amino (AA) nonspecific immune functions in the juvenile Siberian sturgeon (Acipenser baeri; 75 ± 5 g). Test diets included: T1 (control) T2 fish fed containing 400 300 g/kg respectively during whole experimental period, T3 (every other day) T4 week) with diet respectively, T5 a for 3 weeks weeks, to 56 days by visual satiation. Unlike ration T5, feeding...

The capacity of sub-yearling Siberian sturgeon (Acipenser baerii Brandt, 1869) (19.7 ± 0.8 g) to show compensatory growth was assessed for a 40-day period the effects short-term starvation and refeeding on growth, feeding performance body composition. After acclimation, 25 experimental fish were randomly distributed among twelve 500-L cylindrical fiberglass tanks with flow-through system. subjected four different regimes: control, which fed times daily apparent satiation; T1: periods 2 days...

This study was undertaken to evaluate the effects of temperature fluctuations on growth rates, hematological indices and body composition Acipenser baerii juvenile during a 120 day trial. A total juveniles (initial weight: 132 ± 4.2 g) were stocked in triplicate groups (10 individual per replicate) 12 fiberglass tanks (500 L capacity). Four regimes applied: The first group maintained as control at constant 22 0.6°C (mean around which other test trials fluctuated). second exposed between 19...

Little is known about molecular mechanisms involved in gonad differentiation sturgeon species. In non-mammalian vertebrates, sox9, dmrt1, cyp17a1 and ar are male specific genes testicular highly conserved. order to understand the mechanism underlying development sturgeon, we investigated sex steroids level of 11-ketotestosterone (KT) testosterone (T) relative expression great gonads during different stages sexual maturity. The results showed all studied had dimorphic patterns males. immature...

A 12-week feeding trial was carried out to evaluate the effects of different levels dietary choline on growth rate, body composition and total liver lipid juvenile Siberian sturgeon, Acipenser baerii. semi-purified basal diet formulated using vitamin-free casein wheat gluten as a protein source, mixture animal plant oils dextrin carbohydrate source. Graded chloride were used at 0, 2000, 4000, 8000 mg kg−1 (actual concentrations: 1500, 3500 7500 diet) added diet. Juvenile baerii with initial...

The current study was carried out to evaluate the effects of probiotic, Lactobacillus plantarum on growth performance and hematological parameters in Siberian sturgeon (Acipenser baerii).Fish (14.6±2.3 g) were fed three experimental diets prepared by supplementing a basal diet with L. at different concentrations (1×10 7 , 1×10 8 9 colony-forming units (cfu) g -1 ) control (non-supplemented basal) for weeks.At end experiment, 3 fish sampled randomly from each tank anaesthetized.Then, blood...

Effects of light and tank colors on stress response juvenile beluga sturgeon, Huso huso, was investigated by the measurement some sero-haematological parameters carcass chemical analysis. The analysis based responses 64 specimens (initial weight 98.83 ± 1.42 g) reared under white, red, green, or blue light, 48 in black, tanks, all for 12 weeks. Blue/green black tanks produced positive effects cortisol that can be related to physiological condition stress.

This study was conducted to adapt Persian sturgeon larvae commercially prepared diets over a period of 35 days. A total 6000 Acipenser persicus (mean weight: 0.406 ± 0.047 g (Mean SD; n = 180) were randomly stocked into 12 concrete tanks (diameter: 2.5 m, height: 30 cm). Each tank with 500 individuals. Three used: (i) formulated in the form paste; (ii) diet pellet form, and (iii) paste combined chopped chironomid larvae. control group fed live food (Daphnia + gammarids) also used. Growth...

The present study was carried out to determine the ability of Acipenser baerii in utilizing carbohydrate (dextrin) as a non protein energy source substituted with animal oil. A total 65 juveniles A. an initial mean weight 689 ± 62 g were distributed 15 fiber glass tanks. Five diets formulated including 0, 5, 10, and 20% dextrin fed  for 8 weeks. Fish weighed monthly growth evaluated each treatment. At end experiment, body composition hepatosomatic index analyzed. There no significant...

The economic losses due to fungal contamination in development of sturgeon and the side effects malachite green environment are very important. Therefore, it is essential investigate introduce suitable natural substances instead green. aim this study was compare antifungal effect Thymus vulgaris with on fungi isolated from Siberian eggs obtained International Sturgeon Research Institute. samples were inoculated culture media (SDA) Glucose-Peptone Agar at 25°C for 5-7 days then identified. T....