Growth and Survival of Common Carp (Cipriius Carpio) Fingerlings at Varying Stocking Densities

An experiment was conducted to determine the growth and survival of Common carp (Cyprinus carpio) fingerlings at varying stocking densities. The experimental animals were stocked in (9) cages installed in a pond. The treatments are as follows: Treatment II (25 fingerlings/m^3), Treatment II (50 fingerlings/m^3), and Treatment III (75 fingerlings/m^3) with an initial weight of 5.12g. Each treatment was replicated thrice. After 60 days, the final mean weight gain of common carp was significantly higher at Treatment I (20.35g), followed by Treatment II (16.78) and lastly, Treatment IIl (14.01 p). Highest mean weight gain was obtained in Treatment I (15.23) followed by Treatment II (11.662), and Treatment III (8.89g). As for its mean daily growth, Treatment I was the highest with 1.02, followed by Treatment II with 0.78g and lastly, Treatment I with 0.59y. Statistical analysis revealed that Treatments I and Il, and Treatments I and III were not significantly different (P>0.05) for the mean body weight, mean weight gain, and mean daily growth. The feed conversion ratio was found to be nonmentally lower at Treatment I (2.28) followed by Treatment II (2.59) and lastly, Treatment III (3.02). Statistical analysis showed that Treatments I and II were not significantly different (P>0.05) from each other, as compared to Treatment III which was significantly different (P<0.05) from the two other treatments. The condition factor for Treatment I was1.86, for Treatments III and III, were 1.87, and all of the treatments do not differ significantly (P>0.05). Treatments I and II had a 100% survival rate and only 99.56% for Treatment II. The water parameters ranges recorded were; 28.8-31.6°C for temperature, +.5- 5.lppm for dissolved oxygen, 6.8-7.5 for pH, 0-0.5ppm for ammonia, and 50-60cm for the water transparency. The study revealed that common carp reared at lower stocking density (25 fingerlings/m^3) obtained better growth and feed conversion ratio.