Vol. 12, Issue 2 (2023)

The present study was designed to observe the effect of different organic manure on the growth of Amur carp (Cyprinus carpio haematopterus) fingerlings with supplementary feed in the Tarai Region of Uttarakhand. During this study, ponds were treated with cow dung, vermicompost and poultry manure for seven months to observe the effect of these organic manures on the growth of Amur carp fingerlings. The final weight of Cyprinus carpio haematopterus was recorded as 306.78g in Poultry treatment (TP), 256.63g in Vermicompost treatment (TV), 231.07g in Cowdung treatment (TC) and 203.54g in Control (C). The final length was recorded as 29.11cm in TP, 26.95cm in TV, 25.94cm in TC and 24.11cm in C (control), maximum Specific Growth Rate (SGR) was achieved in case of treatment TP (1.77%), followed by TV (1.69%), TC (1.64%) and minimum in C (1.58%). Feed Conversion Ratio (FCR) was recorded in TP treatment (2.71) followed by TV (2.81), TC (2.96) and minimum in C (3.18). Highest Gross Conversion Efficiency (GCE) was achieved in TP (0.360), where fishes were fed with natural food and also fed by supplementary feed followed by TV (0.35), TC (0.33) and minimum with C (0.31). The survival rate of Cyprinus carpio haematopterus was recorded as 96.66% in TP, 96.00% in TV, 95.66% in TC, and 92.66 in C treatment. Leukocyte count was achieved in TC (13.252x10³µl) followed by TV (12.651 x10³µl), TP (11.650 x10³ µl) and lowest TLC level was recorded in the control C (10.245 x10³µl). The treatment TP (3.876x10⁶ µl) resulted best Total Erythrocyte Count, followed by treatment TV (2.626 x10⁶µl), TC (2.386 x10⁶µl) and C (2.223 x10⁶µl). Maximum haemoglobin % was achieved in case of TP (10.533%) followed by TV (8.623%), TC (7.816%) and minimum in control (7.326%). In this study poultry manure deserved priority in fish production followed by vermicompost and cow dung which is important to sustainable aquaculture and to reduce expenditure on cost of feeds and fertilizers which form more than 50% of the total input cost.