Study on the Stocking Density of Fry for Fingerling Production of Common Carp at BAPARD Nursery Ponds | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 69, Volume 26, Issue 6, November and December 2022, Pages 1199-1214 PDF (642.05 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2022.280731 | ||
| Authors | ||
| Md. Abdul Halim; M. M. Nabi | ||
| Abstract | ||
| The present study was designed to assess the growth and production performance of common carp (Cyprinus carpio) fry reared at various stock rates in the pond of the BAPARD campus, Gopalganj from the 1st of April till June the 15th in 2022. Six typical ponds (three treatments with two replications) were selected with a rectangular size of 10±0.25dec and an average depth of 1.52±0.03 meter. Three different stocking densities with two replications, T1 (20,000 fry/dec), T2 (22,500 fry/dec) and T3 (25,000 fry/dec) were examined. Fry samples with initial length & weight of 0.30±0.05cm and 0.28±0.06g, respectively, were collected from Sonali Fisheries Hatchery, Kotalipara, Gopalganj. The survival rate of the stocking common carp was 53±0.15%, 51±0.12% and 50±0.20in T1, T2 and T3, respectively. The weight gain of common carp recorded values of 1821.43±1.00, 1507.14±0.75 and 1239.29±0.89in T1, T2 and T3 respectively. The daily weight gain (g/day) of common carp was recorded as 0.07±0.05, 0.50±0.04and 0.40±0.045in T1, T2 and T3, respectively. The biomass gains (g) of common carp were 5.09±0.05, 4.22±0.06and 4.34±0.07in T1, T2 and T3, respectively. The feed conversion ratio was evaluated to be 1.80±0.07, 2.15±0.05and 2.50±0.08in T1, T2 and T3, respectively. The SGR in weight (%/day) of common carp was recorded as 3.94±0.03, 3.71±0.04and 3.70±0.05in T1, T2 and T3, respectively. The condition factor (K) of common carp recorded values of 1.06±0.02, 1.04±0.04and 1.00±0.03in T1, T2 and T3, respectively. The production (kg/dec.) of common carp registered values of 57.02±0.02, 50.87±0.82 and 46.29±0.50 in T1, T2 and T3, respectively. The benefit-cost ratio (BCR, species) was significantly (P<0.05) higher in T1 (1.46) than T2 (1.27) and T3 (1.05). The findings of this experiment showed that the lower stocking density produces high production with low expenditure. | ||
| Keywords | ||
| Common carp; Stocking density; Nursery ponds; Production; BCR | ||
|
Statistics Article View: 193 PDF Download: 479 |
||
