确定亚历山大小型渔业的鱼类质量:价值链分析

sally Ebrahem Abdelaziz, Mai Salah, Haiam M. Aboul-Ela, Reda Fahim
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摘要

关键词 埃及地中海渔业部门对国家经济做出了重要贡献,水产品出口约占农业出口总额的 40%。该行业在提供就业机会方面也发挥着至关重要的作用,尤其是为生活在地中海沿岸的人们提供就业机会。然而,该行业一直面临着威胁其可持续性的各种挑战,包括过度捕捞、非法捕鱼行为和环境退化。价值链分析有助于确定渔业部门的各个阶段及其相互依存关系。在这项研究中,针对埃及亚历山大的 30 种特定鱼类(Mullus barbatus、Sardinella aurita 和 Diplodussargus)进行了四个价值链阶段(渔船、批发商、零售商和大卖场)的分析。为了在小型渔业采样区开展价值链研究,对以下参数进行了评估:总挥发性氮(TVN)、硫代巴比妥酸(TBA)和 pH 值。这些检测通常用于评估鱼的质量和新鲜度,其结果表明,这些物质浓度较高的样本不合格的情况较多。最后,本研究建议在小型渔业管理中应用价值链分析法,在捕捞规模限制、监测计划、认证程序、捕捞后设施、季节性休渔、社会企业、融资设施和栖息地保护等方面制定更严格的法规。
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Determination of fish quality in Alexandria small-scale fisheries: A value chain analysis
Keywords The Egyptian Mediterranean fisheries sector is a critical contributor to the country's economy, with fish exports accounting to approximately 40% of the total agricultural exports. This sector also plays a vital role in providing employment opportunities, particularly for those living along the Mediterranean coast. However, the sector has been facing various challenges that threaten its sustainability, including overfishing, illegal fishing practices, and environmental degradation. A value chain analysis can help to identify the various stages of the fisheries sector and their interdependencies. In this study, four value chain stages (vessels, wholesalers, retailers, and hypermarkets) were conducted in Alexandria, Egypt, for particular 30 fish species ( Mullus barbatus, Sardinella aurita, and Diplodussargus ). To conduct the value chain study in the sampling areas of small-scale fisheries, the following parameters were assessed: total volatile nitrogen (TVN), thiobarbituric acid (TBA), and pH, The results of the TBA tests and TVN analysis revealed notable disparities between the stages. These tests were frequently used to estimate the quality and freshness of fish, and their findings showed that samples with higher concentrations of these substances had more failures. Conclusively, the current study recommended stricter regulations on harvest size restrictions, monitoring programs, certification procedures, postharvest facilities, seasonal closures, social enterprises, finance facilities, and habitat protection as suggested by applying value chain analysis in small-scale fisheries management.
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