Author/Authors :
حيدريه م. نويسنده , اكبري م نويسنده Agricultural, Medical and Industrial Research School (AMIRS-NSTRI), Karaj, Iran Akbari M , ميرواقفي آ نويسنده Department of Fisheries and Environment Science, Faculty of Natural Resources, University of Tehran, Tehran, Iran Mirvaghefi A , فرهمند ه نويسنده Department of Fisheries and Environment Science, Faculty of Natural Resources, University of Tehran, Tehran, Iran Farahmand H , شيخ زاده ن نويسنده Department of Food Hygiene and Aquatic Animals, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran Sheikhzadeh N , نجفي حاجيفر ا نويسنده Agricultural, Medical and Industrial Research School (AMIRS-NSTRI), Karaj, Iran NajafiHajivar E
Abstract :
This study was conducted to evaluate the efficiency
of Ergosan, an algal extract containing alginic acid
and Hilyses, a fermented Saccharomyces cerevisiae, on growth, immune response and hematological
parameters in rainbow trout (Oncorhynchus mykiss). Fish with an initial average weight of 70-75 g
were fed with Ergosan (5 g kg-1
) and Hilyses (10 g
kg
-1
) for a period of 70 days. The Results revealed
that dietary supplementation of Ergosan and Hilyses
enhanced the growth of all treated fish significantly
compared to fish fed with non-supplemented diet.
Dietary intake of Ergosan significantly increased the
red blood cell, white blood cell and neutrophil levels compared to the Hilyses-fed and control groups.
The highest IL-8 level and lysozyme activity were
recorded in the Hilyses-fed fish followed by Ergosan. Serum total protein content was enhanced in
fishes administrated with Ergosan compared to the
control group. The findings of this study suggested the potential of Ergosan and Hilyses to activate
growth performance and immunological parameters
in rainbow trout
