Relationship between total factor productivity and fish farming size of Kamyaran county

Farm size is one of the important and effective factors on economic activity of producing units. The purpose of this study is analyzing the impact of farm size on total productivity of fish farming in Kamyaran county. Data were collected by filling 55 questionnaires from fish farming units in 2012. Selection and estimation generalized quadratic production function indicated that food, labor and fry have significant effect on fish production. Also, Kendrick productivity index showed that for a unit of total input, the production will be about 2.5 unit. Productivity function implies that farm size and utilization of progressive technology have positive impact on productivity. For economically using of available resources in this region, it is recommended to increase farms size and utilize progressive technologies.