Constraints and prospects of carp production in Rajshahi and Natore districts, Bangladesh

A. Mohsin, M. N. Islam, Mosharrof Hossain, S. M. Galib
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引用次数: 18

Abstract

This study was conducted in Rajshahi and Natore districts of northern area of Bangladesh for a period of three years (2007 to 2009). One hundred carp ponds were selected randomly and fish farmers were interviewed to reveal the existing constraints and prospects. Ten percent farmers reported multiple ownership as a problem and 16% farmers stated that lease value of pond is too high which reducing their profit level. Lack of quality fish seeds was reported by 33% farmers which results in low growth and high mortality of fishes. Nine percent carp farmers reported that inorganic fertilizers were not giving expected performances. Thirty three percent carp farmers failed to apply required inputs in due time due to lack of sufficient credit. Plankton bloom was recorded in 18% ponds. Three percent fish farmers were found to be affected by flood and drought. Eight percent farmers reported non-severe attack of disease. Fish poaching and poisoning were revealed as major constraints . Thirty six percent farmers mentioned lack of technical supports. Due to found constraints, the farmers failed to use inputs and experiences properly resulted in unsatisfactory fish production (3598.72±785.83 kg/ha/yr) to the carp farmers. Further research efforts are recommended to assess the specific impacts of recorded constraints on fish production. DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15435 Univ. j. zool. Rajshahi Univ. Vol. 31, 2012 pp. 69-72
孟加拉国Rajshahi和Natore地区鲤鱼生产的制约因素和前景
本研究在孟加拉国北部地区的Rajshahi和Natore地区进行,为期三年(2007 - 2009年)。随机选取100个鱼塘,对养鱼户进行访谈,揭示制约因素和前景。10%的农户认为多重所有制是一个问题,16%的农户认为池塘租赁价值过高,降低了他们的利润水平。33%的养殖户报告缺乏优质鱼种,导致鱼类生长缓慢,死亡率高。9%的鲤鱼养殖户报告说,无机肥料没有达到预期效果。33%的鲤鱼养殖户由于缺乏足够的信贷而未能及时投入所需的投入物。18%的池塘录得浮游生物大量繁殖。3%的养鱼户受到了洪水和干旱的影响。8%的农民报告了非严重的疾病袭击。鱼类偷猎和中毒是主要的制约因素。36%的农民提到缺乏技术支持。由于所发现的限制,养殖户未能正确使用投入物和经验,导致鲤鱼养殖户的鱼产量(3598.72±785.83公斤/公顷/年)不理想。建议进一步开展研究工作,以评估已记录的限制因素对鱼类生产的具体影响。DOI: http://dx.doi.org/10.3329/ujzru.v31i0.15435 Univ. j. zool。Rajshahi university . Vol. 31, 2012 pp. 69-72
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