Effects of selected herb on Growth response, Feed utilization efficiency and hematological parameters of common carp (Cyprinuscarpiovarcommunis) fingerlings

Four medicinal herbs namely Rumex obtusifolius, Plantago lanceolata , Taraxacum officinale andUrticadioicawere assessed for the content of nutrients and antioxidant activity by DPPH method. Among them,Rumex obtusifoliusexhibited the best result in terms of antioxidant activity (85.07%) and nutrient contentfollowed by Plantago lanceolata , Urticadioica and Taraxacum officinale respectively.Rumex obtusifolius were selected to be incorporated in the diet of common carp (10±0.05g)and five iso-nitrogenous (crude protein 32%) and Iso- caloric (400 kcal/100g) experimental diets were formulated. Rumex obtusifolius powder was incorporated at the rate of (0%) control, (2.5%) for treatment T1, 5.0% for treatment T2, 7.5% for treatment T3 and 10.0% fortreatment T4. Experimental diet were fed to the experimental groups of common carp @ 5% were assessed for the content of nutrients and experimental period of 60 days. Results showed significantly (P<0.05) higher growth performance, hematological parameters and survival rate among the four treatment groupsin contrast to the group under control. Highest percentage increase in weight (257.21±1.64), PER (1.17±0), and SGR (2.12±0.01) were observed in treatment group T3. Also the Better FCR (1.91±0) was noted in T3. Haematologicalparametersand the rate of survivalshowed significant improvement in treatment group T3. Highest values of RBC(3.11±0.06), Hgb (8.63±0.05) and PCV (41±0.41) were observed in T3 in contrast to control. There were high survival rates found in all the treatment groups compared to control group and the highest survival rate (97.5±2.5) was observed in T3. Thus, it may be stated thatRumex obtusifoliuscan be effectively added to feed as a feed supplement to enhance the growth performance, haemotological parameters and survivability of common carp fingerlings.