This study was performed to investigate the effects of feeding rates on growth performance, feed conversion and body composition of juvenile snow trout (Schizothorax zarudnyi). For this purpose, fish with an initial body weight of 2.17± 0.1 g were fed a commercial diet (40% protein, 3.8 Kcal/g diet) at five ration sizes 2%, 4%, 6%, 8% and 10% of their body weight per day, for 60 days. Feeding t...

this research was conducted to evaluate alteration of growth performance, nutrition, carcass and some serum biochemical parameters of common carp fed the diets supplemented by different levels of meal and alcoholic extract of alfalfa (medicago sativa). in this research, 300 fish (mean weight: 20.4 ± 0.19 g and mean length: 11.78 ± 0.64 cm) were fed by nine nutritional diets for 8 weeks. nutriti...

this experiment was conducted to evaluate the effect of spirulina pletensis powder on the growth performances (final weight (fw), daily growth ratio (dgr), feed indices (feed conversion rate (fcr), voluntary feed intake (vfi), protein efficiency ratio (per), protein produce value (ppv), body chemical (protein, fat, moisture and ash) and fatty acid composition of mugil cephalus for 62 days. the ...

In this study, a feeding trial was conducted to examine the potential of replacing fish meal with brewers yeast in practical diet of goldfish (Carassius auratus). Five isoproteic (37% CP) and isocaloric (3350 kcal/kg) diets were formulated to contain graded levels of brewers yeast. Fish meal protein was replaced by 0%, 15%, 25%, 35%, and 45% of yeast. Each diet was randomly allocated to triplic...

in current study, protein hydrolysates were produced using microbial proteases of alcalase, protamex and flavourzyme from yellowfin tuna viscera. the results indicated that, protein hydrolysate from alcalase, had significantly higher protein content, nitrogen recovery and degree of hydrolysis than the others (p 0.05). the results of amino acids composition revealed that all hydrolysates were al...

this experiment was conducted in international researchery institute of sturgeon fishes shahid  dadman. the basal diet contained fish meal as protein source (cp=40%). five diets were supplemented with 5 graded levels of methionine, (0, 0.5,1 ,1.5, 2% met per kg diet) . each diet was randomly assigned to triplicate groups of 195 juvenile huso huso (initial weight 31.9± 2.8) in fiftin 500-l circu...