studies on alcoholic extract of plantago ovata on some hematological parameters of oncorhynchus mykiss

pisciculture has benefited human being during last decades. among different species oncorhynchus mykiss is of great important. its increasing mortality due to infectious diseases and also infectivity of synthetic drugs motivated us to evaluate the effect of alcoholic extract of plantago ovata on some hematological parameters of this species. hematological parameters could act as symptoms of health and fitness. this research was done in research center of cold water fish in yasouj. treatments were different doses of alcoholic extract of plantago ovata seeds (0.1, 0.5 and 1 percent). each treatment was replicated three times and each replicate contained 30 individuals (30+5.23 g). experiments were conducted in a completely randomized design and results were taken and noted done after 60 day feeding. hematological parameters including hematocrite amount (pcv), red blood cells and median globular volume were affected significantly at doses 1 percent (p<0.05) while white blood cell number was not affected(p>0.05). all and all it could be deduced that alcoholic extract could affect hematological parameters in related to red blood cells hence addition of this extract to daily diet could enhance hematopoiesis.