Sources of Productivity Growth in rainbow Trout Aquaculture in Iran: Technical Efficiency Change or Technological Progress?
This study investigates the sources of total factor productivity (TFP) growth in rainbow trout production in Iran using data envelopment analysis (DEA). The Malmquist index is then employed to decompose the TFP growth into technical efficiency change and technological progress. We utilized panel...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Taylor & Francis Group
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/12038/ http://psasir.upm.edu.my/id/eprint/12038/1/Sources%20of%20Productivity%20Growth%20in%20rainbow%20Trout%20Aquaculture%20in%20Iran.pdf |
| Summary: | This study investigates the sources of total factor productivity (TFP) growth in rainbow trout
production in Iran using data envelopment analysis (DEA). The Malmquist index is then employed
to decompose the TFP growth into technical efficiency change and technological progress. We utilized
panel data of 207 trout farms in the country over a 5-year period from 2003 to 2007. The results of
this study revealed that TFP growth of rainbow trout farming has an increasing trend over the period
at an average annual rate of 3.7%. The trend of cumulative technological change is negative and
tends to be contrary to cumulative technical efficiency change. Although there is no technological
change or innovation on trout farming, the technical efficiency change was found to be the sole source
for TFP change, whereas the mean of technical efficiency was estimated to be about 66%. Therefore,
there is still a great relative potential for increasing trout production through improvement in managerial
efficiency as well as technological progress. The study suggests that Iran also has considerable
room to enhance trout aquaculture’s TFP growth by shifting the production frontier with adoption of
new technologies and improving innovation. |
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