SEASONAL VARIATION OF WATER QUALITY PARAMETERS AND USES OF AQUA MEDICINES IN SHRIMP FARMING IN THE SOUTH-WEST REGION OF BANGLADESH

MA Rahman1, MJ Hossain2, SK Barman1*, GU Ahmed3, MM Alam1, KK Tikadar1
Journal of the Sylhet Agricultural University, Volume 9, Issue 1, 2022, Pages 93-102

Abstract:

Shrimp farming is a fast-growing industry, considered one of the best export-carning products in the coastal communities of Bangladesh. In this study, we observed the seasonal variation of water quality parameters in shrimp farms, as well as assessed the uses and effectiveness of aqua medicines. Primary data were collected through face-to-face interviews with 42 shrimp farmers and 30 drug and chemical seller (he temperature varied from ~30 °C (during summer) to 15 °C (during winter), respectively. Dissolved oxygen (DO) levels recorded ranged from 3.5 mg/L to 6.0 mg/L in the study period. The pH remained stable from autumn to the rainy season, within 6.5 to 8 in all sites. Ammonia and nitrite concentrations were higher during the winter season. However, these values were lower before and after the winter. Seven categories of aqua medicines from 38 pharmaceutical companies were found to be used by the farmers. The effectiveness of the drugs and chemicals used by farmers to prepare ponds for increased growth rate and as a disinfectant ranged from 60 to 80% on average. Farmers used these aqua drugs and chemicals haphazardly and appeared to have little knowledge, awareness, and concern about their proper use and effectiveness. To overcome these problems, an effective and functional regulatory framework is required to monitor shrimp farms from the existing government institutions or authorities.

Keywords:

Water quality parameters, aqua medicines, effectiveness, coastal region, Bangladesh


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MA Rahman1, MJ Hossain2, SK Barman1*, GU Ahmed3, MM Alam1, KK Tikadar1. 2022. SEASONAL VARIATION OF WATER QUALITY PARAMETERS AND USES OF AQUA MEDICINES IN SHRIMP FARMING IN THE SOUTH-WEST REGION OF BANGLADESH, Journal of the Sylhet Agricultural University 9(1): 93-102.