水产养殖成本效率分析:采用两阶段自举技术的数据包络分析

IF 3.8 2区经济学 Q1 AGRICULTURAL ECONOMICS & POLICY

Aquaculture Economics & Management Pub Date : 2021-03-30 DOI:10.1080/13657305.2021.1896605

L. Long

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引用次数: 8

摘要

摘要本研究采用数据包络分析和两阶段自举技术，以越南富延省集约化白腿虾养殖为例，分析养殖成本效率。第一阶段采用自举法，在95%置信区间上，成本效率的偏差校正点估计为0.604，下限为0.541，上限为0.687。此外，分配效率低下，这意味着投入组合的不适当——考虑到它们各自的价格——被发现是这种水产养殖成本效率低下的主要原因。第二阶段的自助截断回归结果表明，降低化学品/药物和鱼种的投入水平和提高每公顷饲料的投入水平可能有助于提高对虾养殖的成本效益。更好地获得正规信贷的政策对于提高这种水产养殖的成本效率非常重要。

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Cost efficiency analysis in aquaculture: Data envelopment analysis with a two-stage bootstrapping technique

Abstract This study employed data envelopment analysis with a two-stage bootstrapping technique to analyze cost efficiency in aquaculture using the case of intensive white-leg shrimp farming in Phu Yen province, Vietnam. By adopting the bootstrap procedure in the first stage, the bias-corrected point estimate of cost efficiency was 0.604 with the lower limit of 0.541 and the upper limit of 0.687 at the 95% confidence interval. Moreover, allocative inefficiency, implying the inappropriateness of input mixes—given their respective prices—was found to be the primary cause of cost inefficiency in this aquaculture. The result from bootstrap truncated regression in the second stage suggested that lower input levels of chemicals/drugs and fingerlings and higher input levels of feed used per ha may help to increase the cost-efficiency of shrimp farming. Policies for better access to formal credit are very important in improving cost efficiency in this aquaculture.

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来源期刊

Aquaculture Economics & Management FISHERIES-

CiteScore

7.30

自引率

17.90%

发文量

期刊介绍： Aquaculture Economics and Management is a peer-reviewed, international journal which aims to encourage the application of economic analysis to the management, modeling, and planning of aquaculture in public and private sectors. The journal publishes original, high quality papers related to all aspects of aquaculture economics and management including aquaculture production and farm management, innovation and technology adoption, processing and distribution, marketing, consumer behavior and pricing, international trade, policy analysis, and the role of aquaculture in food security, livelihoods, and environmental management. Papers are peer reviewed and evaluated for their scientific merits and contributions.