Effects of stocking density on the growth rate of gold fish fry reared in hapa

Authors

  • Md Saroar Hossain Shajib Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh 2202
  • Baadruzzoha Sarker Production Officer, BRAC Fish Hatchery, Satgao, Sreemongal, Moulvibazar, Sylhet 3214
  • Abdulla Al Asif Department of Fisheries and Marine Bioscience, Faculty of Biological Science and Technology, Jessore University of Science and Technology, Jessore 7408
  • Md Mizanur Rahman Youth Training Center, Department of Youth Development, Jamalpur
  • Md Abu Zafar Department of Aquaculture, Hajee Mohammad Danesh Science and Technology University, Dinajpur
  • Amir Hossain Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh 2202

DOI:

https://doi.org/10.3329/ajmbr.v3i4.35342

Keywords:

gold fish, hapa, growth, survival

Abstract

The present study was conducted to investigate effects of stocking density on growth performances of gold fish (Carassius auratus) in hapas. Experiment was conducted for a month with three treatments where three stocking densities were T1 (10 fry/hapa), T2 (15 fry/hapa) andT3 (20 fry/hapa) each having three replications which were selected randomly. In the present experiment hapa (3ft × 2ft × 2ft) with 1 mm mesh net was used. Gold fish fry having a mean body weight of 0.007 g were used in all treatments. Fishes were fed at the rate of 10% of their body weight containing 34.11% protein. Water quality parameters were monitored at 10 days interval and the ranges were –temperature 24.75 to 27.75 oC, dissolved oxygen 3.68 to 4.09 mg/L, pH 7.3 to 8.16, ammonia 0.3 to 1 mg/L, nitrite 0.01 to 0.03 mg/L, phosphate 0.6 to 1 mg/L and alkalinity 119 to 187 mg/L. At the growth performances were evaluated by comparing mean final body weight, specific growth rate and food conversion ratio. The present study showed that the gold fish fry in T1 resulted the best mean final weight gain (1.188 g) followed by T2 (0.834 g) and T3 (0.686 g). The SGR ranged between 6.64 and 7.43% per day and FCR ranged between 3.56 and 4.12 with T1 showing the lowest FCR. The survival rate (%) ranged between 76.67% to 85.67%. From the present experiment it was found that individual fish growth rate was decreased with the increase of stocking density.

Asian J. Med. Biol. Res. December 2017, 3(4): 504-515

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Author Biography

Md Saroar Hossain Shajib, Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh 2202



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Published

2018-01-30

How to Cite

Shajib, M. S. H., Sarker, B., Asif, A. A., Rahman, M. M., Zafar, M. A., & Hossain, A. (2018). Effects of stocking density on the growth rate of gold fish fry reared in hapa. Asian Journal of Medical and Biological Research, 3(4), 504–515. https://doi.org/10.3329/ajmbr.v3i4.35342

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