Comparative analysis of cost factors in sturgeon fingerling production in Iranian hatcheries (2000-2004)

Abstract

Production cost analysis in aquaculture is an essential exercise to assist farm managers. Economic assessment of a farm operation also provides the basis to formulate governmental aquaculture and enhancement policies in many regions. The present study employed questionnaires and interviewed managers while also using governmental statistics to gain insight into production cost variables in Iranian sturgeon hatcheries. Within a decade, production of sturgeon fingerlings for release and stock enhancement increased in Iran to more than 21 million fingerlings by 2004. Costs and contributions of various production factors were determined using data obtained from a questionnaire involving all hatcheries between 2000 and 2004. A team of experts completed the questionnaire data sets while conducting interviews at all sturgeon centres and other related departments. From 2000 to 2004 the contribution of A. persicus was 79% of the total number of sturgeon fingerlings produced followed by A. nudiventris with 7.5% and Huso huso with 6.6%. Among the various expenditures between 2000 and 2004, the costs for permanent and part-time employees contributed the greatest share of total costs, averaging 44%, with a noticeable declining trend from 51% in 2000 to 36% in 2004. Obtaining and incubating fertilized eggs averaged 22% of total costs, increasing during the same time period from 6 to 35%, respectively. On average, the 2000–2004 production cost for a single sturgeon fingerling was estimated at Rials 1667 (US$ 0.20), increasing from Rials 992 (US$ 0.12) to Rials 2623 (US$ 0.29) over these 4 years. Permanent staff at a hatchery was determined as being the principal cost, followed by costs for obtaining fertilized eggs (including broodstock handling). Over the 5-year study period the results indicated that costs for part-time labour declined yearly and, conversely, the costs of obtaining broodstocks as well as fertilizing and incubating eggs increased. Considering the background of hatchery production and stock enhancement of sturgeon species and the results of fishing data, it is possible to arrive at a first estimate of the potential contribution of Persian sturgeon farming to the total catch in Iranian waters; it is assumed that these increases were most likely through stock enhancement.