Abstract Despite the enormous potential of tilapia farming in Bangladesh, its culture has yet to become established due to socio-economic, technical and marketing constraints. Tilapia culture is mostly concentrated in the Mymensingh region where a considerable number of fish farmers are involved in production. This study was conducted in Trishal sub-district under Mymensingh district to understand and analyze the constraints and its related factors in tilapia fish culture. Interviews were used to survey 100 households during October and November of 2017. Data were analyzed using descriptive statistics, rank order, coefficient of correlation, multiple linear regression and stepwise regression. Among seventeen constraints, lack of capital to invest in tilapia farming was identified as the most critical one, followed by high feed prices. The least important constraint faced by the farmers was the site selection for tilapia pond preparation. It was revealed that education, credit received, experience in fish farming, training experience and extension media contact of the farmers were significantly associated with the constraints in tilapia culture. Moreover, education, farm size and experience in fish farming were identified as significant determinants to the degree of constraints in tilapia farming. The study indicated some opportunities for the policymakers to address the influential factors (education, farm size and experiences in fish farming) of establishing tilapia farming. Additionally, credit facilities, proper training and suitable extension services could play a significant role in minimizing constraints in tilapia farming.

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了解养殖场罗非鱼（Oreochromis sp.）养鱼的制约因素及其相关因素：孟加拉国的案例

摘要 尽管孟加拉国罗非鱼养殖潜力巨大，但由于社会经济、技术和市场限制，其养殖尚未成熟。罗非鱼养殖主要集中在迈门辛地区，那里有大量养鱼户参与生产。本研究在 Mymensingh 区 Trishal 分区进行，旨在了解和分析罗非鱼养殖的制约因素及其相关因素。在 2017 年 10 月和 11 月期间，通过访谈对 100 户家庭进行了调查。使用描述性统计、排序、相关系数、多元线性回归和逐步回归分析数据。在 17 个限制因素中，缺乏投资罗非鱼养殖的资金被认为是最关键的一个，其次是饲料价格高。养殖者面临的最不重要的限制是罗非鱼池塘准备的地点选择。结果表明，农民的教育、获得的信用、养鱼经验、培训经验和推广媒体接触与罗非鱼养殖的限制显着相关。此外，教育、养殖场规模和养鱼经验被确定为罗非鱼养殖限制程度的重要决定因素。该研究为决策者提供了一些机会来解决建立罗非鱼养殖的影响因素（教育、养殖场规模和养鱼经验）。此外，信贷设施、适当的培训和适当的推广服务可以在最大限度地减少罗非鱼养殖限制方面发挥重要作用。