A 12-week feeding trial was conducted to evaluate the optimum dietary inorganic copper (copper sulphate) in juvenile beluga, Huso huso. Eight semi-purified diets containing 1.1 (Cu1.0), 3.5 (Cu4.0), 7.1 (Cu7.0), 9.7 (Cu10), 13.1 (Cu13), 25.1 (Cu25), 49.9 (Cu50) and 195 (Cu195) mg Cu kg−1 diet form of CuSO4.5H2O were fed fish initial body weight 8.49 ± 0.32 g length 11.85 0.66 cm (mean SD) triplicate groups a flow-through system. Weight gain (WG) Cu10 Cu13 significantly higher than that...

This study was conducted to evaluate the effect of dietary vitamin E on growth performance, feed utilization, biochemical properties and some immune responses in Caspian trout, Salmo caspius. Six experimental diets were formulated with semi-purified ingredients supplemented form DL-α-tocopherol acetate provide actual concentrations 4.9 (the basal diet), 8.6, 17.4, 35.4, 78.8 137.0 mg kg−1 diet, respectively. Each diet assigned three replicate groups trout (initial average weight 9.73 ± 0.34...

In order to evaluate the protein and energy requirement of Persian sturgeon (Acipenser persicus) sub-yearlings, eight experimental diets containing two levels (40% 45%) four lipid (10%, 15%, 20% 25%) were tested. Sturgeons (W0 = 136.8 g) fed satiation times daily for 150 days, resulting in a final mean weight 375.8 g. Growth was significantly affected by content diets. At 40% level, gain specific growth rate (% per day) improved (P < 0.05) increasing dietary (energy) content. Protein...

The effects of dietary l-carnitine on growth performance, whole body composition and feed utilization were studied in beluga, Huso huso. Fish randomly allocated 15 tanks (30 fish per tank) triplicate groups fed to satiety during 84 days one five isonitrogenous (41% CP) isoenergetic (20 MJ kg−1) diets, each differing content [0 (control), 300, 600, 900 1200 mg kg−1 diet]. At the end trial, grew from 19- 23-fold weight, 8.4 g a maximum 191 g. 300–600 had highest specific rate (SGR, 3.69 3.72%...

A 3 × 4 factorial design was used to evaluate the dietary protein requirement and determine optimum energy (P/DE) ratio in sub-yearling Persian sturgeon, Acipenser persicus, reared indoor system. Twelve experimental diets (40P16, 40P17, 40P18, 40P19, 45P19, 45P17, 45P18, 50P16, 50P17, 50P18 50P19) were formulated prepared contain three levels (40%, 45% 50%) four digestible (16, 17, 18 19 kJ g−1 diet) at each level. Fish averaging 103.3 ± 3.5 (mean SD) fed one of for 14 weeks. At end period,...

A 17-week feeding trial was carried out to evaluate the effects of dietary L-carnitine level in beluga, Huso huso. total fish averaging 1247 ± 15.6 g (mean SD) were randomly distributed into 18 fibreglass tanks, and each tank holding 10 then assigned one three replicates six diets with 50, 150, 350, 650, 950 1250 mg kg−1 diet. At end 17 weeks trial, average weight gain (WG), feed efficiency (FE), protein ratio (PER) condition factor (CF) fed 350 diet significantly (P < 0.05) higher than...

A feeding trial was conducted to examine the effects of dietary supplementation betaine on growth performance, haematological-biochemical parameters, antioxidant status and digestive enzyme activities juvenile Caspian trout, Salmo trutta. haematological–immunological defence system For this purpose, 180 juveniles (9.7 ± 0.59 g—total length, 9.35 0.48 cm) were fed four experimental diets as follows: plant-protein basal diet, with 1.4 2.8% or a fishmeal-based diet (control). Triplicate groups...

In the present study, impacts of various concentrations Aflatoxin B 1 (AFB 1) on Beluga, Huso huso, under controlled conditions were investigated. Belugas (120±10g) fed diets containing 0, 25, 50, 75, and 100 ppb AFB 1/kg diet for 3 months. Results showed levels do not significantly affect specific growth ratio (SGR) (P<0.05) fish in different treatments. However, weight gain food conversion (FCR) varied (P<0.05 between control treatments with contaminated 75 100ppb after 90 days). The...

This feeding trial was carried out to evaluate the effects of different dietary cadmium levels on growth and tissue content in juvenile parrotfish, Oplegnathus fasciatus, using chloride (CdCl2) as source. Fifteen fish averaging 5.5±0.06 g (mean±SD) were randomly distributed into each twenty one rectangular fiber tanks 30 L capacity. Each tank then assigned three replicates seven diets containing 0.30 (C0), 21.0 (C21), 40.7 (C41), 83.5 (C83), 162 (C162), 1,387 (C1,387) 2,743 (C2,743) mg...

A 4 × factorial design was used to examine the possible protein sparing effects of optimum carbohydrate/lipid ratio minimize dietary level in growing Beluga, Huso huso. Three replicate groups fish averaging 891.9 ± 33.4 g (mean SD) were fed one 16 experimental diets that prepared containing four different ratios 0.8, 1.1, 1.4, and 1.7 at each levels 35, 40, 45 50%. At end weeks period, there significant on feed efficiency (FE) (PER) (P < 0.05). There also interactive % weight gain (WG),...

To characterize the effects of a poultry by-product (PBM) on gonadosomatic, physiometabolic indices, digestibility and digestive enzymes juvenile Huso huso (28.42 ± 0.17 g), we procured six experimental diets with 0 (control), 20%, 40%, 60%, 80% 100% PBM to replace fishmeal. After an 8-week feeding trial, results confirmed that weight gain, specific growth rate fish fed were markedly inferior other groups (p < 0.05). Also, highest feed conversion ratio lowest protein efficiency observed in...

A 20 week feeding with three dietary protein levels (40, 45 and 50%) four energy (18.5, 19.8, 22.1 22.4 MJ kg−1) by range (P/E) ratios of 17.86–26.85 mg kJ−1 was conducted to investigate optimum protein, for final weight (FW), specific growth rate (SGR), feed conversion ratio (FCR), efficiency (PER) Hepatosomatic index (HSI) Acipenser persicus Fingerling (Average 10.26 ± 0.11). Study carried out in 3 × 4 factorial design. Fingerlings reared fiberglass tank (500 L water volume) fed apparent...

Abstract As sturgeon breeding has proliferated, there been a heightened demand for growth stimulators in their diets. This study aimed to determine the impact of dietary chitosan on performance, whole‐body proximate composition, growth‐related gene expression, and intestinal histology juvenile Acipenser stellatus . A total 180 A. juveniles with an average weight 31.90 ± 0.73 g were fed diets containing 0 (control), 1.5, 3.0, 4.5, 6.0 chitosan.kg −1 basic diet eight weeks. The findings...

The present study was conducted to determine the safe and toxic levels of dietary copper in juvenile olive flounder, Paralichthys olivaceus, fed Mintrex ® copper, a chelated source. Fish averaging 3.8 ± 0.13 g (mean SD) were 1 10 diets ( n = 3) containing 7 (Cu 0 ), 10.4 (CuM 5 15.8 24.9 20 43.4 40 82.1 80 158 160 308 320 658 640 1267 1280 ) mg Cu/kg diet. At end 12 wk feeding trial, weight gain (WG), specific growth rate, protein efficiency ratio fish CuM significantly higher than those , P...

To determine the best live food and to reevaluate optimal weaning period for beluga fish (Huso huso) larvae, seven experimental diets: Daphina (DP), Chironomids (CH), Gammarid (G), + formulated diet (DPFD), (CHFD), (GFD) (FD) in triplicate groups were fed 4662 sixteen-days-old larvae which captured from stock tank randomly distributed into 21 tanks. The microdiets contained 48-50% crude protein, 12-13% fat, 9-11% moisture 8.5-9.5% ash. After 25 days feeding trial, weight gain (WG), specific...

Thiamine is a crucial nutrient in larval stage of fish, and thus, the present study aimed at evaluating effects dietary thiamine supplementation on survival, growth performance, biochemical parameters beluga, Huso huso, larvae. The fish larvae (50 ± 4.5 mg) were fed diets containing 0 (control), 5, 10, 20 mg/kg for 26 days from 18 after hatching to 44 hatching. significantly increased rate, digestive enzymes activity, whole body protein ash but decreased lipid moisture <math...

The aim of the current study was to investigate beneficial effects dietary thiamine supplementation on physiological, immunological and antioxidant responses in juvenile beluga, Huso huso. fish (∼ 3 g) were fed four times a day with diets containing 0 (control), 5 (5 T), 10 (10 20 (20 T) mg kg−1 for 12 weeks. Significant increases observed growth performance indicators different levels thiamine, compared control group best T treatment. carcass protein content significantly increased...