Study on optimization of stocking density of climbing perch (Anabas testudineus, Bloch 1792) in marginal farmer earthen ponds
Md. Abdul Halim, MM Nabi and S Nahar
The present study was carried to optimize the stocking density of Vietnamese koi (Anabas testudineus) in marginal farmer earthen ponds in Kotalipara Upazilla under Gopalgonj district Bangladesh out from April to July 2015. Three stocking densities (treatments) were compared: ponds with 300, 350 and 400 individuals per decimal. All treatments (T1, T2 and T3) were randomly imputed and in duplicate. SGR (%) value (2.01) was recorded in T1 and the lowest (2.01) in T3. The survival rates were 90±.20, 85±0.38 and 80±0.15 for T1, T2 and T3 respectively. The FCR was 1.5±0.30, 1.75±0.35 and 1.85±0.14 in T1, T2 and T3 respectively. The highest production was 6669.00 kg/ha in T1, followed by T2 (6246.63 kg/ha) and T3 (6086.08kg/ha) respectively. The highest benefit or net return for T1 Tk. 325941.40/ha and BCR of 1.54 followed by Tk. 146172.13/ha and BCR value of 1.22 in T2 and Tk. 96171.92/ha and BCR value of 1.13 in T3. The stocking density of 300 individuals per decimal was the most profitable system. More research will be needed to further optimize stocking density of Vietnamese koi in marginal farmer earthen ponds.