碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 104 / The Ayu aquaculture of Taiwan is developing in fifty years. In this study, the biological and economic information are collected by questionnaires for Plecoglossus altivelis industry. Subsequently, multivariate statistical analysis as the analytic method is used to find the key factors for impacting the production efficiency. For industrial development strategy, SWOT analysis is applied to clarify the advantage and disadvantage of Ayu farming. Finally, the multiple regression analysis based on the data provided from 2009 to 2014 is applied to analyze that how the price is affected by demand and supply.
Depending on different region and scale farming, four farming types (such as small-scale farming of Hsinchu, small-scale farming of Ilan, medium-scale farming of Ilan and large-scale farming of Ilan) are analyzed. According to these results, an average breeding cycle of about 8.5 month in the small-scale farming of Hsinchu. The average of benefit-cost ratio (B/C) ratio (about 2.51) is affected by fry costs and personnel costs. On the other hand, the average of benefit-cost ratio (B/C) ratio (about 1.08) in the small-scale farming of Yilan is affected by fry costs, feed costs and energy costs. The average of benefit-cost ratio (B/C) ratio (about 1.50) in the medium-scale farming of Yilan is affected by feed costs and energy costs. The average of benefit-cost ratio (B/C) ratio (about 1.52) in the large-scale farming of Yilan is affected by feed costs, energy costs and other costs.
Canonical Correlation Analysis (CCA) showed that biological and economic variables are positively correlated. When stocking density is enhanced, the benefits will be declined. The analysis is resulted that the current stocking density of sturgeon is reached maximum so that operator needs to decrease stocking density. Cobb-Douglas function analysis shows that the scale of the industrial culture for Plecoglossus altivelis is increasing. Furthermore, SWOT analysis is applied by these results to give advices for development strategies of ayu-aquaculture industry in Taiwan. Finally, the optimal production of ayu farming in Taiwan is about 2,427 tons and the optimal price is about 134 NTD/kg. The maximum production of ayu farming in Taiwan is about 2,764 tons and the price is about 208 NTD/kg.
Therefore, we suggested that mechanisms regulation for demand and supply of ayu may regulated by the Fishery Department of Taiwan government based on these analysis results in this study. The analysis results of optimal production will avoid to oversupply and protect development of ayu aquaculture.
| Identifer | oai:union.ndltd.org:TW/104NTOU5086013 |
| Date | January 2016 |
| Creators | Huang, Wei-Shuen, 黃偉舜 |
| Contributors | Miao, Sha, 繆峽 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 96 |
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