probiotics have shown beneficial effects on growth parameters of various food animals. in this research, the growth promoting effects of a multi-strain probiotic was investigated on common carp (cyprinus carpio). accordingly, 200 fish (6-7g) were randomly allocated to 4 experimental groups. the first group received placebo and was served as the negative control. the second group received the pr...

background: increase in aquatic production is dependent on raw materials, quality of diet, feed manufacture technology and optimum feed formulation. objectives: the aim of this study was investigation and quality control feed of fft, gft1 and gft2 of rainbow trout in farm and fish feed factory producers in chaharmahal and bakhtiari province. methods: in this study samples of fft, gft1 and gft2 ...

The effect of adding protein xanthophyll from lucerne (PX) on growth parameters and the redox profile of carp muscle Cyprinus carpio (L.) was studied. During a 10-week experiment, carp were kept in two types of tanks: Control, where fish were fed a commercial fish feed, and in experimental tanks (PX+), where the fish were fed the same fish feed with a 5% addition protein xanthophyll from lucern...

the present study was conducted to evaluate the effect of dietary inclusion of silver nanoparticle on general performance and digestive proteases in zebra fish. four experimental diets were designed with a concentration of 5, 20 and 40 parts per billion (ppb) nanoparticles in the diet (named s5, s20, and s40, respectively) and control group without any nanoparticles (s0). there was no significa...

AIM This study was revealed the potential of Peperomia pellucida leaf extract as an immunostimulator agent in controlling motile aeromonad septicemia due to Aeromonas hydrophila in red hybrid tilapia, Oreochromis sp. MATERIALS AND METHODS In the present study, minimum inhibitory concentration (MIC) of P. pellucida leaf extract against A. hydrophila was determined through two-fold microbroth d...

Acute toxicity of an azo dye-methyl red (5-40 ppm) was examined under starving conditions, on two groups of Poecilia reticulata--a freshwater fish, fed on different diets prior to their exposure to dye. Besides natural feed, fish of group-1 also received Spirulina feed for one month (feed population), whereas those of group-2 received only natural feed (non-feed population). The mortality data ...

This study was performed to assess growth rate, feed efficiency, and N and P loss of sea bass Ž . initial body weight 3.5 g , held in 500-l tanks under ambient temperature and natural light, and fed according to the following methods: by automatic feeders that released feed continually in Ž . daylight according to feed manufacturers’ recommendations AF100% ; half of the above continuŽ . Ž . all...

Selenium (Se) is an essential element for animals, including fish. Due to changes in feed composition for Atlantic salmon (Salmo salar), it may be necessary to supplement feeds with Se. In the present work, the transfer of Se and Se species from feed to muscle of Atlantic salmon fed Se supplemented diets was studied. Salmon were fed basal fish feed (0.35 mg Se/kg and 0.89 mg Se/kg feed), or fee...

Isolated juvenile rainbow trout were fed a feed supplemented with L-tryptophan (TRP) for 3, 7 or 28 days, after which they were either sampled directly (undisturbed) or subjected to a standardised stressor prior to sampling. Controls (stressed and undisturbed) received the same feed but without any supplementary TRP. Stress resulted in a significant elevation of plasma [cortisol] in fish fed co...