博士 / 國立臺灣海洋大學 / 水產養殖學系 / 103 / The bioeconomic analysis of cost and return for Tiger shrimp and Striped catfish farming in Mekong Delta, Vietnam was studied by considering different production scales and geographical locations.
Both the production cost and the profitability were influenced by the production scales for Tiger shrimp farming and impacted by the geographical locations for Striped catfish farming. Multivariate statistical analysis showed that operating cost, benefit and earning capacity increased from extensive to semi intensive and finally to intensive systems for Tiger shrimp farming. Meanwhile, operating cost and benefit declined from middlestream ponds to upstream ponds and finally to downstream ponds for Striped catfish farming, however, the earning power of downstream ponds was higher than that of upstream or middlestream ponds. Cobb Douglas production function analysis revealed that net revenue from increasing the production scale would increase if input intensities of fixed, seed and feed costs rose for Tiger shrimp farming while net revenue from increasing the production scale would increase if input intensity of feed cost rose and net revenue would decrease with an increase in input intensity of medication costs for Striped catfish farming. Canonical correlation analysis mentioned that to delimit the most appropriate stocking density and survival rate for Tiger shrimp farming as well as the most suitable stocking density and fingerling size for Striped catfish farming by considering both the biological tolerance and economic trade-off effects would be better through the management and production efficiency for both of two industries.
For Tiger shrimp farming, the production scale and cultivation techniques of extensive system should be invested more and the culture period of semi-intensive system should be longer to raise the profit. For Striped catfish farming, the size of fingerlings from middlestream ponds (1.83 cm high), the stocking density from upstream ponds (47.17 fingerlings /m2), and the weight of fish harvested from downstream ponds (0.86 kg/fish) should be the best for production efficiency. Besides, various levels of government should put in place suitable policies and infrastructure to reinforce the management of seed quality, to encourage farmers to use electricity instead of petroleum, to apply Global Good Agricultural Practisces standards to improve trade competition in international markets, to increase competitive capacity of domestic feed processing companies.
| Identifer | oai:union.ndltd.org:TW/103NTOU5086013 |
| Date | January 2015 |
| Creators | Truong khac Hieu, 張平 |
| Contributors | Sha Miao, 繆峽 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 145 |
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