Application of a new polysaccharide extracted from the roots of Acanthophyllum glandulosum on health improvement of rainbow trout Oncorhynchus mykiss (Walbaum), exposed to mercury chloride

Polysaccharides are known as biopolymers and shown to play key roles in therapeutic agents. In current study we examined possible efficiency of freshly derived polysaccharide from the roots of Acanthophyllum glandulosum on blood indices of rainbow trout exposed to sub acute doses of mercury chloride.540 Fish were divided into three equal triplicate groups. The first treatment was control group, the second treatment tanks contained 60 µg/1 of an aqueous solution of Hg and the third treatment contained 60 µg/1 HgCl and 1% freshly extracted polysaccharide 24 h before introduction of fish to the tanks. Serum hematological and biochemical parameters were analyzed. Results of the present study showed some hematological levels were significantly adjusted in polysaccharide and mercury exposure group compared to mercury exposure groups. Adding polysaccharide had adjustment effects on some parameters including RBC, Ht, MCV and Cortisol. Polysaccharide had not significant adjustment effect on MCHC, MCH, Hb levels, protein levels and glucose. Finally, our results confirm that the new polysaccharide has useful effects on the host and probably act as a prebiotic that can improve the host health.