abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

In this study, effect of  replacement of fish meal by  Poultry by product meal  on  growth index,  biochemical and immune parameters of  Huso huso with average weight 108.83±5. 9gr ± SD that reared in fiberglass tank (2000 lit) for  8weeks were investigated. Six test diets (contain 42% protein and 18.5 Mj kg-1 energy) were prepared. Fish meal substituted by poultry by product  at 20% (PBM20), 4...

Proper storage density affects the growth and rearing of fish. This experiment was carried out to investigate the effects of rearing densities on the growth and carcass composition of Caspian kutum (Rutilus frisii) fry and physicochemical factors of farming water. Fish were examined in five rearing densities (5, 10, 15, 20, and 25 fish/60 L of water) with three replications, and fed based on 8%...

Today, the uses of medicinal plants as a growth stimulant and immunity improver have found a special place in the aquaculture industry. In this study, the effect of eucalyptus essential oil on hemato-immunological parameters, growth performance and resistance against Aeromonas hydrophila were evaluated. 240 carp (mean weight 53.64 ± 0.060) were divided into four treatments including a control g...

This study was conducted to evaluate the effects of different proportions of lemon bee brush essential oil on growth performance, carcass composition, and hematology and biochemical parameters of common carp (Cyprinus carpio). Common carp with an average weight of 8 ± 0.2 g were fed for one month with a diet supplemented with Lemon beebrush essential oil (0.15 and 0.3 ml) and with normal diet a...

A 60-days growth trial was conducted in a flow-through culture system to examine the effects of different dietary vitamin C and iron levels on the growth, hematological and immunological parameters of rainbow trout (Oncorhynchus mykiss) fingerlings (with average initial weight of 5.12 ± 0.02 g). Three levels of vitamin C (150, 200 and 250 mg kg-1 diet) and iron (5, 7 and 9 mg kg-1 diet) (as fer...

this experiment was carried out to investigate the effects of supplementing two macroalgae Sargassum cristaefolium and Gracilaria pygmaea extracts in feed on some growth indices, hematology and blood constituents of juvenile rainbow trout (Onchorhynchus mykiss). Rainbow trout were randomly divided into four groups: a control group was fed with basal diet, and three treated groups fed with basal...