EFFECT OF MANURING ON GROWTH AND SURVIVAL OF INDIAN MAJOR CARP JUVENILES

In the present investigation, effect of manuring on growth and survival of Indian major carp juveniles was studied by considering optimum water quality parameters. For the experiment, four ponds from two different places (Khairbanakala and Bodla) of Kabirdham district with an area of 0.0483 ha were selected. The experiment was conducted for a period of one month. In the experiment, control ponds (T0) was kept without manuring and provided with daily ration (rice bran, groundnut oil cake) at 8% of body weight showed less survival (63%) and growth rate (2.0 g) while the treatment ponds (T1) were fertilized with cow dung (200 kg), single super phosphate (250 g), urea (1 kg) showed higher net growth rate (2.2 g) and survival rate (73%) of fish juveniles with same daily ration. The physiochemical parameters of control ponds evaluated showed lesser dissolved oxygen level (4.14±0.13 mg/L) and conductivity (0.18±0.16 m mho) while the parameters from fertilized ponds showed acceptable levels with saturated oxygen level at (5.65±0.78 mg/L), slight alkaline pH (7.7±1.2) and optimum conductivity (0.25±0.41 m mho). The plankton concentration was comparatively higher in fertilized ponds (144.54±12.78 indi./mL) compared with control (92.14±10.71 indi./mL). The major phytoplankton included Eiglina, Spirulina, Spirogyra, Chlorella and Volveox while the zooplankton group included Cyclops, Copepods, Rotifers and Diaptomus. The results concluded that fertilization of juvenile rearing ponds with optimum dosages played important role in providing nutritious natural diet. The aim of the study has been fulfilled and the methodology can be adopted by small fish farmers to reduce huge loss during earlier fish developments.