Impact of stocking density on growth and production performance of monosex tilapia (Oreochromis niloticus) in ponds

Authors

  • Md Mamunur Rahman Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202
  • Debashis Kumar Mondal Bangladesh Fisheries Research Institute, Brackish Water Station, Paikgacha, Khulna
  • Md Rurul Amin Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202
  • Mohammad Golam Muktadir Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202

DOI:

https://doi.org/10.3329/ajmbr.v2i3.30120

Keywords:

stocking density, monosex tilapia, growth, production performance

Abstract

Stocking density is considered one of the important factors affecting fish growth. The study was aimed to compare the growth parameters of monosex tilapia at various stocking densities. The experiment was carried out during the period from 06 August to 22 December 2014. Three stocking densities were used as 125, 250 and 375 fish/dec and designated as treatment T1, T2 and T3 respectively each having two replicates. All the fishes were of same age group having average initial body weight of 1.34g. A commercial feed was supplied at the rate of 40% of the body weight and then gradually it was readjusted to 20%, 10%, 5% and 3% respectively and continued up to the end of the experiment. The water quality parameters were monitored at 14 days interval and the ranges were: temperature 19.34 to 31.40°C, pH 6.83 to 8.03, dissolved oxygen 4.78 to 6.82 mg/l and transparency 29.02 to 49.45cm.The result of the present study showed that the mean weight gain was significantly (P<0.01) highest in T1(120.58g) followed by T2(89.74g) and T3(74.58g).The average specific growth rates (SGR) was 2.590, 2.560 and 2.598 (%/day) in treatment T1, T2 and T3 respectively. There was significant (P<0.01) differences among the survival rate. The survival rate 87% was significantly highest in T1followed by 76% in T2 and 69% in T3.The fish productions were 13.25, 17.30 and 19.64 kg/decimal in T1, T2 and T3 respectively. Although the highest production was obtained in T3 but individually growth performance of monosex tilapia was highest in T1. The highest net profit was found (BDT 3,373.30) inT1compared toT2 (BDT 3,017) and T3 (BDT 2,918). The highest benefit cost ratio (BCR) was 1.79 in T1followed by 1.44 in T2and 1.28 in T3. Based on the result of present experiment, fish farmers might be suggested to rear tilapia at lower stocking density to get higher growth, survival and benefit in a short period of time.

Asian J. Med. Biol. Res. September 2016, 2(3): 471-476

Downloads

Download data is not yet available.
Abstract
1355
PDF
805

Author Biography

Md Mamunur Rahman, Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202



Downloads

Published

2016-11-04

How to Cite

Rahman, M. M., Mondal, D. K., Amin, M. R., & Muktadir, M. G. (2016). Impact of stocking density on growth and production performance of monosex tilapia (Oreochromis niloticus) in ponds. Asian Journal of Medical and Biological Research, 2(3), 471–476. https://doi.org/10.3329/ajmbr.v2i3.30120

Issue

Vol. 2 No. 3 (2016)

Section

Articles

License

Authors who publish with this journal agree to the following terms / The author(s) affirm(s) that:

  1. The manuscript submitted is based on authors own research and is original work.
  2. Authors certify that we all participated in the research work and preparation of the manuscript in a substantive way.
  3. Authors also declare that they have read and approved the manuscript.
  4. Authors further declare that the manuscript has not been published in part or full and is not being submitted or considered for publication in part or full elsewhere.
  5. Any material included in the manuscript does not violate copyright or other rights of anyone. 
  6. Authors  also affirm that the article contains no vilifying or unlawful statements and does not contain material or instructions that might cause harm or injury to the Editor-in-Chief/Editors of the Journal and the public.
  7. Authors assure Asian J. Med. Biol. Res. and the Editor-in-Chief/Editors of the Journals, and hold them harmless from any loss, expense or damage occurred by a claim or suit by a third party for copyright violation, or any suit arising out of any violation of the foregoing warranties as a result of publication of my/our article. 
  8. In consideration of authors manuscript submitted, authors hereby grant Asian J. Med. Biol. Res. unlimited, worldwide, permanent royalty-free, right to publish, use, dispense, license, transmit, display, exhibit, record, store, translate, digitize, broadcast, reproduce and archive, in any format or medium, whether now known or developed hereafter.

All materials related to manuscripts, accepted or rejected, including photographs, original figures etc., will be kept by Asian J. Med. Biol. Res. for one year following the editor’s decision. These materials will then be destroyed.