碩士 / 國立臺灣海洋大學 / 應用經濟研究所 / 94 / Tilapia has been one of the major aquaculture products and important exported fishery products in Taiwan. Tilapia ranks as the top quality among the aquaculture products in Taiwan. Taiwan tilapia is the only fishery product among the four major exported products selected by the Council of Agriculture, Taiwan in 2004. Taiwan tilapia is primarily exported to the United States, Saudi Arabia, Korea, and Canada. But since 2000, exports of tilapia from China to the United States have surpassed Taiwan and become America’s leading supplier of tilapia; consequently, the dominant position of Taiwan tilapia in the U.S. has been challenged. In addition, Taiwan tilapia's international market has been challenged and impacted by the low-cost production in Southeast Asian countries. The purpose of this study is to examine how to identify the factors that influence the competitiveness of Taiwan tilapia and ways to utilize essential resources more efficiently with existing aquaculture techniques in the current industry predicament.
The 2004 fisheries statistic yearbook showed that Yunlin-Chiayi -Tainan area produced 76,200 tons and accounted for 85.23% of the total tilapia production in Taiwan. With the help of Taiwan Tilapia Alliance, the daily accounting data of 80 tilapia aquafarms in Yunlin-Chiayi-Tainan area for the period between January and December of 2004 were made available to this study. The daily work logs provides a more detail and accurate information of farming activity in a year than the annual economic surveys which may underestimate the total expense. Moreover, these 80 aquafarms offer more detailed data, allowing instant verification of missing or contradictory entries.
This study applies stochastic frontier production function and technical inefficiency modeling of Battese and Coelli (1995) on measuring production efficiency on monoculture tilapia farms in Taiwan. How to improve production efficiency of aquatic farmers will be in accordance with the estimated result of production efficiency. The result shows that goodness of fit of Translog stochastic frontier production function modelling is high, with returns to scale of 0.52, a decreasing return to scale, based on the likelihood ratio test. There are 64.18% aquatic farmers shows their technical efficiency value is above 0.70 and the ratio of the variance of the technical inefficiency with respect to the total variance is 80%, indicating that 80% of the technical inefficiency of the tilapia aquatic farmers could be explained by the inefficiency factors, such as region, cultivation scale, farming experience, and level of education.
The finding of decreasing returns to scale in the current tilapia farming in Taiwan indicates there are over-investment phenomenon in farming process and output cannot be increased with more investments; therefore, aquatic farmers should focus on avoid technical inefficiency. Results show that aquatic farmers who have more cultivation experience and higher level of education also show higher efficiency, attending more aquaculture technique seminars had no significant influence on technical efficiency in the Taiwan tilapia industry. Maybe only those farmers who have experience and education will benefit from seminars. In order to learn new techniques, to acquire new expertise, to improve the efficiency of aquafarms, and to increase the competitiveness of the tilapia industry, this study suggests that the fishery authority could support Taiwan Tilapia Alliance to holding aquaculture economic diagnosis seminars to utilize the result from this study to advise aquatic farmers how to increase production efficiency by to avoid over investment and to avoid inefficiency caused by deficiency of cultivation experience and lake of years in education. In addition, the aquafarms shows the highest efficiency could as the serve model for the other aquafarms with lower efficiency to improve competitiveness of the Taiwan tilapia industry.
| Identifer | oai:union.ndltd.org:TW/094NTOU5452010 |
| Date | January 2006 |
| Creators | Chi-Ting Chuang, 莊琦婷 |
| Contributors | Fu-Sung Chiang, 江福松 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 76 |
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